2024 Cadillac Lyriq Complaint Log

My 2024 Cadillac LYRIQ generated the following High Voltage Battery fault codes via On-Demand Diagnostic: U2B4A, U2B4D, U2B50, U2B53, U2B56, U2B59, U2B5C, U2B5F, U2B62, U2B65, U2B68 — all under module VIC - Lithium-Ion Battery. Multiple codes are flagged "Service Right Away" indicating an active fault in the high voltage propulsion battery system. I brought the vehicle to Lindsay Cadillac, Alexandria VA [XXX] ) on [INSERT DROP-OFF DATE]. As of today [INSERT TODAY'S DATE], the vehicle has been sitting at the dealership for [X] days with ZERO repair action taken. The service manager has stated he does not know what to do, has no timeline, and cannot provide any answers. GM Technical Service Bulletins PIP6009B and 25-NA-044 specifically cover these exact DTCs and provide a documented repair procedure. The dealer has failed to follow or initiate this procedure. No loaner vehicle was provided despite this being a warranty repair on inoperative vehicle. I have been forced to rent a vehicle at $125/day out of pocket. I have an open Cadillac Concierge case number [93707662 #]. Cadillac Concierge was unable to reach the dealer's service department by phone. I have escalated in writing to GM's executive office including [XXX] and [XXX] with no resolution. This is a high voltage battery fault on an all-electric vehicle flagged as "Service Right Away" severity. The vehicle remains unrepaired, the dealer is unresponsive, and GM's own customer service cannot reach the dealer. This represents both a safety concern and a complete failure of the warranty service obligation. I am requesting NHTSA investigation of both the underlying battery defect and the dealer's failure to act on a known TSB. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Sunroof/moonroof cracked without any impact or signs of impact.

COMPONENT: Vehicle Speed Control — Automatic Emergency Braking / Anti-Lock Braking System (ABS) COMPLAINT: I am filing this complaint to report a POST-REMEDY FAILURE of the repair performed under NHTSA Safety Recall 24V589 (GM Program #N242453471) on my 2024 Cadillac Lyriq AWD. RECALL REMEDY COMPLETED: My vehicle received the Electronic Brake Control Module (EBCM) software update on August 13, 2024, under GM Program #N242453471. The recall was marked "Complete" by the servicing dealership on that date. FAILURE INCIDENT: On March 15, 2026, at low speed (under 25 mph) on a dry surface, my Lyriq failed to activate its Automatic Emergency Braking system while approaching a stationary object. The vehicle did not decelerate or stop as designed. The ABS system appeared to release braking pressure rather than maintain it, allowing the vehicle to continue forward and strike the object. The front grille assembly sustained significant physical damage as a direct result. This failure is identical in nature to the defect described in Recall 24V589 — specifically, the ABS falsely activating and releasing braking pressure during low-speed operation on a dry surface — despite the recall remedy having been applied and certified complete ten months prior. SAFETY CONCERN: The software remedy applied under Recall 24V589 did not correct the defect on my vehicle. This raises serious concerns about the effectiveness of the EBCM software update as a remedy across all affected vehicles. If other vehicles received the same software update and the defect persists, there is a significant ongoing safety risk to the public. I am requesting that NHTSA: Investigate whether the Recall 24V589 remedy (EBCM software update) has been effective across all affected vehicles Determine whether a supplemental or revised recall remedy is necessary Require GM/Cadillac to cover physical damages resulting from this post-remedy failure I have also contacted Cadillac Customer Care direct

The vehicle has experienced repeated failures of the infotainment and display system, including the screen going blank and displaying “no content available” while functions such as Apple CarPlay are actively in use. The issue affects the ability to control media and view system information from both the main display and steering wheel controls. The vehicle has undergone multiple repair attempts, including replacement of the human machine interface (HMI) module and radio module, as well as repeated programming. Despite these repairs, the issue continues to reoccur, including immediately after the most recent repair. The condition is intermittent and difficult to duplicate, and a field service engineer has been unable to consistently reproduce the issue. The dealership has indicated there may not be a current fix and that resolution could depend on a future software update. This ongoing failure of critical display and control systems raises safety concerns and has not been resolved despite multiple repair attempts.

The contact owns a 2024 Cadillac Lyriq. The contact stated that while reversing, the rear-view safety sensor alert did not function as intended. In addition, the contact stated that the auto-braking safety sensor did not activate. The contact's vehicle crashed into a tree. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure, and a case was filed. The contact stated that the case was denied. In addition, contact was denied to receive any documents providing the decision of the case. The failure mileage was approximately 18,125.

While slowly turning into a parking space at approximately 1 mph (?) the vehicle unexpectedly accelerated. The vehicle mounted the curb, and struck a a parked car and hit a brick retaining wall, causing damage to both. This all happened within a few seconds and there were no warning lights or messages before or during the accident. I was not injured and there were no other people present. The police were called and inspected the damages. The insurance company was contacted due to damages. No one was in the parking lot at the time. The manufacturer was notified and will inspect the car for cause/failure.

I was traveling on the freeway at approximately 70 mph, at about 5:15 pm. I was not using cruise control. There was no one in front of me for maybe a quarter mile. Suddenly and without warning, the car slammed on the brakes. A yellow alert came up on the dash telling me the Forward Collision system had been activated. The red warning lights at the front of the dashboard (the heads-up display) also flashed. The road was dry, I was on an entirely straight section of road, and there were no shadows. Besides scaring me half to death, if someone had been immediately behind me, they could easily have slammed into me. The car has not been inspected by the dealer, etc. I believe OnStar should have a record of it happening, but I have not contacted them.

Component: Electronic Stability Control / Navigation / GPS Complaint: Since the February 2026 over-the-air software update, the built-in Google Maps GPS has been severely malfunctioning. The system consistently fails to update my vehicle’s location, showing me as stationary at my home address even after driving for 30+ minutes and 20+ miles away. This is not an intermittent glitch — it renders the native navigation system completely unusable after nearly every drive. Prior to the February 2026 update, the GPS functioned perfectly. The issue began immediately following that update and has persisted despite infotainment system resets and checking for further software updates. I am aware that GM has internally acknowledged this issue via Preliminary Information bulletin PIC6644 (issued February 2026), which attributes the problem to a “software anomaly” and confirms engineering is investigating. However, no fix or timeline has been provided to customers. A GPS system that does not reflect the vehicle’s actual location is a safety concern — particularly when relying on navigation for routing, hazard awareness, or emergency response. I am filing this complaint to ensure this issue is part of the public record and to urge NHTSA to monitor the scope of this defect across 2024 Lyriq vehicles

After a manufacturer-initiated software/system update was performed on my 2024 Cadillac Lyriq approximately two weeks ago, the vehicle stopped charging and stopped generating heat. I brought the vehicle to Cadillac Norwood MA for diagnosis. The dealership informed me that a replacement part is needed, but the part does not currently exist and must be manufactured by General Motors. They could not provide any timeline for when the part would be available or when the vehicle would be repaired. The vehicle is being held at the dealership indefinitely. I have opened a case with Cadillac's EV Concierge and filed a formal complaint with them, but have not received a resolution or timeline. This vehicle is used professionally as a chauffeur vehicle and the inability to charge or heat the vehicle renders it completely inoperable and unsafe, particularly in Massachusetts winter conditions. A vehicle losing all charging capability and cabin heating after a software update represents a serious safety concern for EV owners

My 2024 Cadillac EV is only 9900 miles. I was driving the car on Sunday Jan 11, 2026 with my family when we noticed smoke filled inside the cabin. My 3 children (a [XXX] , a [XXX] old, and a new-born who is [XXX] old) were in the car; they inhaled the smoke. We evacuated the car and called onstar for assistance - who towed the car. The smoke originated from the tailgate of the car. Alarmingly, just 3 days before this incident (Jan 8, 2026), I took the car to the local Cadillac dealership to complain about water intrusion in the left taillight that is in the liftgate. The service advisor created a repair order and sent me back saying it would take 10 days to arrive. Upon my specific inquiry, the advisor stated the car was safe to drive and assured me that I would not get a ticket. Since the event (5 days later) it was confirmed by the service advisor that the same water intrusion event lead to the electrical fire that burned a connector, a module, and multiple wiring components causing the fire. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I experienced a complete electrical failure in my 2024 Cadillac Lyriq that prevented access to the vehicle while an infant was inside. The incident occurred when the vehicle’s 12-volt battery system failed, causing a total loss of electrical power and rendering the vehicle completely unresponsive. As a result of this failure, all electronic entry systems stopped functioning and the exterior door handles remained in the locked position. There were no warning signs or error messages communicated from the vehicle. Because the vehicle could not be unlocked or accessed from the outside, an infant was trapped inside the vehicle for approximately 27 minutes. Cadillac has been contacted and they confirmed a faulty 12 volt battery and since then replaced the battery. The incident was recorded by home security cameras and documentation has been preserved. This event raises a serious safety concern. A failure of the 12-volt battery should not disable all methods of entry into a vehicle, particularly when the design of the Cadillac Lyriq uses electronically actuated exterior door handles that remain recessed and locked without electrical power. This creates a situation in which occupants may be trapped inside the vehicle with no reliable means for outside access. The inability to unlock or mechanically access the vehicle during a power failure presents a significant risk of injury or death, particularly in situations involving children, extreme temperatures, or medical emergencies.

On November 26, 2025, while traveling in stop-and-go freeway traffic, I experienced a severe braking failure that led to a rear-end collision. Despite applying maximum force to the brake pedal, the vehicle did not decelerate as expected. Objective technical evidence from the Bosch CDR report (Case #1105768) confirms a critical system failure: Extreme Driver Input: At -0.5 seconds before impact, Driver Applied Brake Pedal Pressure reached 10,935 kPa, representing a near-maximum emergency braking effort. Inadequate Response: Despite this peak pressure, the Vehicle Indicated Speed decreased only from 24 MPH to 22 MPH in the final 0.5-second interval. Data Discrepancy: The vehicle decelerated by 12 MPH (from 36 to 24 MPH) between -1.0s and -0.5s under lower pressure (7,695 kPa). However, when brake pressure was increased to its peak at -0.5s, deceleration effectively stalled. Electronic Anomaly: The Traction Control System (TCS) was reported as "Active" throughout the braking event, indicating potential improper electronic intervention. This vehicle has a history of significant electrical failures, including a total power loss on 10/15/2024 that required a high-voltage battery replacement. The failure of the braking system to respond to maximum driver input poses a catastrophic safety risk. I am requesting an investigation into the 2024 Cadillac LYRIQ's brake-by-wire and electronic stability control integration.

THIS IS AN ISSUE THAT HAS BEEN UNDER RECALL SINCE JUNE 2025. WE HAVE HAD THE DEALER DO THE RECALL, HAD OVER THE AIR UPDATES AND IT STILL CAUSES ALL THE ADVANCED DRIVER ASSISTANCE SYSTEM SCREEN TO GO BLACK AND DISABLES THEM. DEALER MSYATES ALL RECALLS HAVE BEEN COMPLETED.

on Sept 23, 2025, I was rear ended by a driver going between 50-60 mph. I am concerned that some safety features were potentially not working at the time of the incident. I will detail the information below: Background / Original Service Issue: When I initially brought my vehicle to Titus-Will Chevrolet GMC Cadillac for service, I observed that multiple critical safety systems were nonfunctional, including, but not limited to: Forward collision alert sensor All cameras (rear, front, top down) Blind zone steering assist Lane departure warning and other associated warning sensors The dealership kept my car for two days and then informed me that a "module" needed to be ordered for repair, but stated that the vehicle was considered “drivable” and would call me when the part came in. I noticed some of the safety features had resumed working, however some were still non-functional. At no point was I told there were any potential safety risks, nor which safety systems were still not functional. I was not given any paperwork, as they were holding it until the module came in. Crash Event: On 09/23/2025 at 5:37 pm, I was involved in a crash. At the time of impact: The forward collision alert sensor did not function I received no warning of the impending collision No airbags deployed. This may have been directly related to the previously identified and unrepaired safety system issues.

At least 10 times over the past three months the vehicle’s feature of one pedal driving disengages without a reason or code. When the this happens the vehicle accelerates rapidly. This has happened on local streets and on the highway and often results in a near miss collision. I am concerned this will result in a serious injury or death.

On September 9, 2025, while slowly turning into a parking space at approximately 7 mph, the vehicle suddenly experienced unintended acceleration. There were no warnings, alerts, or Safety Alert Seat vibrations prior to the surge. The vehicle rapidly accelerated forward, struck a parked car, went over a curb, hit a tree, and finally came to rest after colliding with the side of a building. GM has since taken possession of the vehicle for forensic analysis.

I am submitting this follow-up to document new information and continuing concerns regarding my 2024 Cadillac Lyriq EV, which experienced sudden unintended acceleration during a parking maneuver. GM and its claims administrator (ESIS) have now completed their review and issued a denial letter on October 31 2025, stating “no defects were found.” However, the denial included no supporting technical findings, analysis, or data explaining how that conclusion was reached. Despite multiple written requests, GM has not provided the following key event-data modules: – Brake System Control Module (EBCM/iBooster) export (brake pressure, pedal position, brake override flags) – Propulsion/Drive Control Module data (torque request vs actual torque and accelerator input) – Front Camera Module metadata (timestamps and event record IDs) Additionally, several data discrepancies remain unresolved — including mismatched timestamps between the ASCM and FCM reports and camera images that do not correspond to the actual crash scene. On October 29 2025, GM publicly announced Customer Satisfaction Program N252521980, covering certain 2023–24 Cadillac Lyriq and 2024 Chevy Blazer EV vehicles for a Brake System Control Module software update due to possible brake-control performance issues. Because my incident involved loss of braking response, this recall appears directly relevant. I have requested confirmation whether my vehicle is affected and whether this module was analyzed in GM’s investigation, but have not received a reply. I am requesting that NHTSA review GM’s handling of this case to determine whether the engineering review was complete and whether the vehicle’s BSCM or related systems could be implicated in unintended acceleration or brake override failures. GM Case #1092995 – Submitted to ESIS/GM Product Investigations Group. Thank you for your attention and for documenting this matter in the defect database.

I was driving on Saturday September 3 at 5 pm over the Chain Bridge entering Washington DC. Traffic was heavy and the auto brake went on when I was about 15 feet from the car in front of me. I was using one-pedal driving and when I pushed on the gas slowly we started slowly moving forward. I was traveling around 3 or 4 miles an hour and the car would not slow down when I took my foot over the pedal. One pedal driving apparently stopped working. I then applied the brakes gently and the brakes did not work. I then pushed the brakes hard and still no brakes worked. I tried pumping the brakes and nothing worked. The car gently ran into the car in front of me causing no damage to the car in front and he kept on his way. My front grill was cracked and bumper was slightly damaged. The signal on the dashboard said parking brake engaged which it was not. While the auto safety brake engaged minutes earlier when it was not needed it did not work when the car was drifting uncontrollably into the car in front of me.

While driving in one-pedal driving mode at the high setting, an error message appeared and one-pedal driving suddenly shut off and switched to a more standard drive mode where engine braking is disengaged. This happened while drive was engaged and stopped at a red light. The car briefly lurched forward and the car engaged an emergency brake to prevent the car from rolling into the vehicle in front of me. This incident was unpredictable and resulted in an unexpected change to the drive mode I had selected which could have lead to a collision.

1-Pedal Drive Turns Itself Off / Disengages Itself while Driving.

I was driving at a steady 65mph on a highway when the car suddenly surged and the message "1 pedal driving deactivated. Use brakes to stop." I stopped the car with the brakes and restarted it and reactivated 1 pedal driving. Note I was NOT using regenerative braking at the time. The car surged a few miles an hour, and in a heavy traffic scenario could have easily caused a crash.

One pedal driving switched to unavailable while driving - 24 Lyriq AWD I have seen this couple of times while driving now. I keep the one-pedal driving setting on High. I suddenly get an error on Side detection unavailable and One pedal driving turned off - use manual braking. I also feel a slight surge in acceleration while this happens, but I have been able to slow down and re-engage one pedal and it seems to work after that. I am concerned that I may bump into someone in front of me if this happens again, since it has happened a couple of times now!

Since a recent software update, vehicle will unexpectedly give multiple error codes, and disengage “one-pedal driving” mode. This happened recently when coming to a stop at a traffic light behind another vehicle. When coming to a gradual one-pedal stop, the one pedal driving mode unexpectedly disengaged, causing me to almost hit the vehicle in front of me. This error has occurred 5-6 times in the past 3 months.

Recall 252500680 GM claims closed and downloaded OTA. NO such download ever occured per my vehicle history as displayed. How many thousands of vehicles are being improperly closed without updating due to GM incompetance.

Hi, this vehicle is owned by Surreal Development LLC. A company whom reverse engineers vehicle. GM has an issue in their Cadillac Lyriq's which causes a complete failure of the vehicle's communication systems without warning while driving. This issue appears to affect all Global B vehicles but it is most severe in vehicles with one pedal driving (Sierra EV, Lyriq, Blazer EV, Optiq, Silverado EV, Equinox EV, etc...) The error is likely within the vehicle's Serial Data Gateway Control Module but it is unclear. The vehicle recovers from the communication quickly (within seconds) but it causes long term adverse affects for that driving period. 1. The vehicle will light up with warnings (Service Traction Control, disengage super cruise, disengage ACC, etc...) 2. The driver's pedal will go into safety mode. 3. A "Service High Voltage" system warning may or may not appear. The safety concern is mostly in #2. When this happens it is very jarring to the driver as it drastically changes how the vehicle responds. While the vehicle may state one pedal driving is disabled many times it still indicates it is on within the controls (likely due to an error in the compounded communication fault). This can lead to the driver rear ending the vehicle in front of them or rolling over. The fault does not correct itself until the vehicle resets (powers off/on). The issue is common and affects many owners of the Cadillac Lyriq. The only diagnostic data we see are communication faults across many modules.

The contact owns a 2023 Cadillac Lyriq. The contact stated that while reversing and proceeding to make a U-turn, he crashed into a steel guardrail. The automatic braking system did not engage. There was no audible or visual alert or warning provided by the system. There was no injury, police report, airbag deployment, or fire. The vehicle was taken to the local dealer. After twelve days, the vehicle was not diagnosed or repaired. The manufacturer was contacted, who confirmed the vehicle had functioned as designed. The failure mileage was 8,600.

While driving my 2024 Cadillac Lyriq in rolling traffic, the vehicle abruptly engaged the brakes without warning or cause. The braking was so forceful I initially thought I had been rear-ended. Once the braking event ended, I began to accelerate—only to discover the vehicle had shifted into reverse without any input from me. This resulted in a rear-end collision. There were no alerts or dashboard warnings to indicate the gear change. I believe this may be related to a malfunction in the automatic emergency braking system or the shift-by-wire controller. This behavior presents a serious safety hazard and must be investigated. I have filed a report with Cadillac and will be taking the vehicle to a dealership for diagnostics and data log review.

The main driving display in my 2024 Cadillac Lyriq has faulty software or light sensor calibration - the vehicle automatically dims the screen (including the speedometer) to unreadably low levels, is extremely slow to respond to changing lighting conditions and time of day (the display changes between day and night modes automatically but is constantly confused by lighting conditions). This happens most often at dawn and dusk. I will be driving in bright sunlight with the sun glaring in my eyes, and the screen will think it's night and be dimmed way down to about 20% brightness. Customers have no way of overriding this. There is no setting to disable automatic brightness, and some customers have taken the time to manually unplug the daylight sensor on the dash to resolve their issue. Additionally, the system is extremely sensitive to going under overpasses, which will immediately dim the entire system to about 20% brightness and stay that way for a long time after returning to bright sunlight. This also happens when pulling into my garage, where the display dims down so low that I am unable to see the safety cameras around the vehicle in order to park my vehicle correctly. GM has been made aware of this issue, and they've been aware of it for years. I've spoken to GM directly, and they say, "a fix is coming," but it's been years and nothing has been done. They've issued multiple software updates, none of which address the problem so far. Subsequently released vehicles, like the Optiq, have this issue resolved. GM knows how to fix it, and that's an issue; they just do nothing about it. This is a very well-known, very widespread issue for other Lyriq owners. You can find chat chains on Reddit discussing this issue, and even one where multiple owners talk about starting a class action case on it as it involves vehicle safety. I'm attaching photos of what my display looks like when the sun is out in the morning. It displays the same behavior at dusk.

The contact owns a 2024 Cadillac Lyriq. The contact stated that upon engaging the drive mode of the vehicle, the vehicle unintendedly switched back to parking mode. The vehicle was towed to the dealer, where an unknown repair was performed, and the vehicle was repaired. Additionally, the dealer informed the contact that the VIN was included in NHTSA Campaign Number: 25V356000 (Equipment, Electrical System). The contact stated after the dealer performed the recall repair, the vehicle failed to restart. The dealer informed the contact that the manufacturer needed to provide additional remedy to correct the failure. The dealer referred the contact to the manufacturer for assistance. The manufacturer was contacted and referred the contact to the dealer for assistance. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 29,488. Parts distribution disconnect.

We were exiting a parking garage when the car suddenly slammed the brakes on in the path of traffic and lost all electrical power. We could not get the car to turn back on or even get it in neutral to move it out of the path of traffic. Our [XXX] old got locked in the car because the car had zero electric power and someone helped us figure out how to unlock the car with the physical key. We were stuck for four hours because no one could figure out how to get the car out of the garage. If this had happened going at a high speed this could have caused a deadly crash, and it happened without any warning. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

This is an update to my original NHTSA complaint submitted on May 5, 2025 (complaint number 11658852), regarding a complete electrical failure in a 2024 Cadillac Lyriq. While parked in a garage, the vehicle experienced a full shutdown—rendering all systems inoperable, including the door locks and windows. Most alarmingly, a [XXX] child was trapped in the back seat due to the doors being electronically locked and unresponsive. The dealership has since diagnosed the failure as a cable routed improperly near the steering column that had rubbed against a component and snapped. This severed connection resulted in the complete loss of vehicle power and emergency functions. Since that time, I have discovered multiple similar reports from other Lyriq owners online describing full system shutdowns, locked doors, and failures to start—many of which are shared on public forums such as Reddit [XXX] ). This suggests that this may not be an isolated case but rather a potential systemic defect in the Lyriq's wiring harness design or electrical architecture. I am extremely concerned that this failure mode could occur while driving, particularly at highway speeds, and would result in loss of steering, braking assist, and emergency exit options. I urge the NHTSA to investigate this issue further to determine whether a recall or manufacturer communication is appropriate. This vehicle is currently with the dealership, and I have refused delivery until GM provides formal safety assurances. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

While driving the car on 2 separate occasions, the breaks failed and the car would not stop completely. Twice I have taken the car to the dealer to be repaired and the car is currently at the dealer.

- Software failure resulted in loss of steering control, speed control, and brakes became unavailable. I was on highway car was at 65 mph and then I got a bunch of error messages mentioned below- 1) Steering assist not available 2) AWD is disabled 3) Headlamps not available 4)Service brake assist And then I was not able to brake the car, and steering became highly unresponsive. I took my foot of gas and let the car roll for 1 mile before stopping safely on shoulder, from where I called Cadillac for support (they towed the car back), since error didn't resolve after stopping or rebooting the car. I took screenshot of these errors after stopping and attached them in this email. - Yes it put safety of me, my passenger, and other vehicles at risk, loss speed and steering control you have cause me to hit any other car. - Yes problem is reported to manufacturer, car is in service. - Vehicle is with Service, since no one got hurt, we didn't involve police. - No prior message or warnings we recieved, all errors come as soon as the issues appear.

Front doors have significant “bounce back” when you open them. You have to block the door from closing/slamming on your leg. The door has hit myself, my passengers and my grandchildren in the leg/shin.

When it rains, just a steady rain, not a downpour, the vehicle slams on the brakes trying to back up. It literally took 3-4 minutes to back out of the driveway. I was also in a parking lot trying to back out and the same issue which created a significant safety hazard with other vehicles. Research online indicates this is not an isolated issue.

What component or system failed or malfunctioned, and is it available for inspection upon request? The issue involves the Anti-lock Braking System (ABS) and the transition between regenerative braking and friction braking in my Cadillac Lyriq (RWD). The ABS engages unexpectedly during normal braking conditions when using one-pedal driving. The vehicle is available for inspection upon request. How was your safety or the safety of others put at risk? The unexpected ABS activation creates inconsistent and unpredictable braking behavior, including a pulsing sensation and reduced braking confidence. This affects the driver’s ability to modulate braking smoothly and predict stopping distance, increasing the risk of a collision, especially in normal traffic conditions where consistent braking response is critical. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. The issue has been reproduced during multiple visits to authorized Cadillac dealerships. However, I have been told that the vehicle is “operating as designed,” despite the abnormal braking behavior. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The vehicle has been inspected by multiple authorized Cadillac dealerships and the issue has been escalated to General Motors. No resolution or fix has been provided to date. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There are no warning lights or messages associated with this issue. The problem occurs intermittently during normal driving conditions, particularly when transitioning from regenerative braking (one-pedal driving) to applying the brake pedal. The issue began shortly after taking delivery of the vehicle and has persisted since.

When driving, the infotainment screen glitched. This also affected the main instrument cluster containing information like speed, and inhibited any ability to control certain functions like the headlights. While the infotainment screen was scrambled, this was not a perceived safety issue [except that cameras could not be seen] However, the main instrument cluster was concerning. Correct speed, gear position, blinkers, etc were not shown or delayed. [e.g. when going approx 30 mph, the cluster stated approx 15 mph]

The phone charging cradle, Bluetooth, wifi, and Radio are getting disconnected, repair made 3-4 times, and still the same problem, also dashboard screen getting dark or disconnected while driving the car. On 01/09 2025, 10 pm I connected to charge the battery and it didn't charge the whole night when I started the car, and heard a big bang like a bomb blew the electrical battery in my garage, thank god I didn't get injured or damage to my garage/home. I took the 5th time to the dealer and asked General Moror to buy back the car. I have filed a written complaint with BBB OF NEW JERSEY and Lemon Law. Thank god I wasn't driving the car on highway when the car battery blew up otherwise I would have or other people would have gotten injured or dead.

I pulled my vehicle in my garage and was lightly tapping the accelerator to get the vehicle far enough in to avoid it interfering with the garage door. I had one-pedal driving engaged so I was not using my brake pedal. Once positioned I was getting ready to put it in park and the vehicle rapidly accelerated as if someone was stomping on the accelerator. It slammed into a refrigerator I have in the garage, pushing it about 2 inches into the wall, breaking through the drywall. The impact was so hard the refrigerator door also popped open and stuff went flying out. I had to slam on my brakes to get it to stop moving forward even though my foot was not on the accelerator.

When backing up my car from the driveway during rain it continuously applies phantom braking making it impossible to move the car. Turned off the rear autobraking but it still doesn’t help. It’s very dangerous. This is the same case for all the electric vehicles manufactured by GM and reddit posts exist for Equinox EV, Blazer EV, Honda Prologoue, Acura ZDX

Inside display dims inappropriately, even in daylight making it impossible to see navigation. Hazard when trying to drive on road. Could cause accident. Needs option to manually brighten/dim. Auto dim feature in this vehicle is terrible.

Vehicle dash won't activate beyond the welcome screen thereby preventing me from seeing the speedometer, fuel gage, lane sensors, navigation, etc. I had to drive it on side streets to the closest dealer without aid of any standard dash meters.

At multiple times when raining, the Automatic emergency braking system activated for no apparent reason as no hazard could be determined.

On [XXX], my wife was driving our 2024 Cadillac Lyriq RWD (VIN: [XXX] ) in stop-and-go traffic on [XXX] at 5-10 MPH. She was maintaining a safe distance when the truck ahead suddenly stopped. She pressed the brakes firmly, but the vehicle failed to stop, resulting in a collision. Despite full brake application, the car did not stop as expected. The Automatic Emergency Braking (AEB) and Forward Collision Alert (FCA) systems did not activate. No alerts or braking assistance occurred, even though these safety features were enabled. Her passenger witnessed her screaming that the brakes were not stopping the car. The crash caused front bumper damage, and a police report was filed. Investigation & GM’s Response GM inspected the vehicle but refuses to provide testing details. The Crash Data Report does not show any recorded braking event or safety activation, despite my wife pressing the brakes. GM has not explained: Why the brakes failed to stop the vehicle. Why AEB and FCA did not activate. Why no braking data was recorded despite the collision. Safety Concerns My wife is now afraid to drive the vehicle and refuses to continue driving it after repairs. I may be forced to break my lease or sell the car due to this serious safety concern. This raises major safety risks for other Cadillac Lyriq owners, especially with known braking-related recalls on 2023 and 2024 models. Request for Investigation I urge NHTSA to: Investigate braking system failures in the 2024 Cadillac Lyriq. Review AEB and FCA non-activation during low-speed collisions. Determine whether GM is withholding data or failing to acknowledge a defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The vehicle's instrument panel automatically dims excessively at dusk and dawn. When it does this, the speedometer and other information in the dashboard are not visible. There is no way to adjust the brightness any higher and no way to disable this auto dim feature. This is, to my knowledge, a known software bug that has persisted for close to two years without any effort by GM to rectify this safety issue.

Unable to get display lighting bright enough to adequately read instrumentation when coming out of garage into low atmospheric lighting. Have instrument display lighting rheostat turned up to maximum but sensors don't allow the display to brighten. The vehicle lighting sensor is not blocked. The rheostat should be able to turn the display to full bright, but isn't designed that way. Definitely a safety issue. Cadillac dealership says there is nothing they can do about this situation, but acknowledge it's a widely reported complaint. The manual rheostat should be able to turn the display to full bright by selecting the maximum setting. Unfortunately it's not designed that way.

During dusk/dawn exterior lighting conditions, the informant screen is too dim to use. i.e. can't change drive mode to snow/ice, or locate any other controls.

The contact owns a 2024 Cadillac Lyriq. The contact stated while driving approximately 35 MPH, the Forward Collision Avoidance: Automatic Emergency Braking system unintentionally engaged. No warning light was illuminated. The vehicle was taken to a dealer to be diagnosed; however, the dealer stated that the cause of the failure could not be determined. The dealer was unable to duplicate the failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 3,400.

While we're driving the vehicle the adaptive cruse control was on. As we approached a vehicle ours started to slow down from 55mph to where it almost braked all the way about 2mph. The vehicle in front of us braked completely and was stopped. As soon as they were stopped, Our vehicle tried to rapidly accelerate into the back of it where we had to intervene and slam on the brakes. If we didn't do this there would have been an accident due to our adaptive cruise control failing. This has happend twice to us. Taken the vehicle to the dealership and they cant replicate the problem so there is nothing to fix. This is something that needs to be Investigated before an accident occurs.

On or about 11/14/24 Car found completely dead and won't start in garage. Car had about 50% charge in main battery pack and 12V completely dead. Called OnStar service and they had vehicle taken to dealership on flatbed. GM app reports Vehicle Issues: "Electric Drive Unit, Lithium Ion Battery, Electric Drive Unit, and 12V battery require your attention now." Vehicle purchased on or about 8/18/24 and at time of failure car had about 385 miles. Car kept garaged when not in use in pristine condition. Dealer reports as of 11/23/24 they do not know the problem with the car. I have been without use of my only car since 11/14/24.