2017 Toyota Highlander

On April 5, 2026, my 2017 Toyota Highlander was involved in a side‑impact (T‑bone) collision on the front & rear passenger side. I was seated in the front passenger seat. The impact was hard enough that my insurance company declared the vehicle a total loss. During the crash, I struck my head, but no airbags deployed (front, side, or curtain). The vehicle is being released to Liberty Mutual Insurance. There were no warning lamps, messages or other symptoms of the problem prior to the failure. I am concerned that the airbag/SRS system may not have functioned properly in a crash severe enough to total the vehicle and cause a head injury to a front passenger. I am requesting that NHTSA record this incident and consider whether there may be a safety defect related to side or curtain airbag non‑deployment in this vehicle. Crash date: April 5, 2026 Approximate speed of other vehicle: [unknown] Location of impact: front passenger side (T‑bone) Result: vehicle declared total loss, head injury to front passenger, no airbag deployment.

The radar cruise control system on my 2017 Toyota Highlander is not functioning properly and creates a safety hazard. When initially setting the radar cruise control, the system works as expected. I can accelerate to a desired speed, press the “set” control, and the vehicle maintains that speed correctly. The problem occurs when I try to increase the set speed. After setting an initial speed (for example, 45 mph), I accelerate to a higher speed (such as 65 mph) and press the “set” control again to update the cruise setting. Instead of setting the new speed, the system reverts to the previously stored speed. When this happens, the vehicle rapidly decelerates and applies braking to return to the lower speed. This sudden and unexpected braking creates a dangerous situation, especially on highways, as it can put surrounding drivers at risk of a rear-end collision. I have tested this multiple times and experience the same result each time. This issue only occurs when using radar cruise control and does not occur with standard cruise control. note this has been an ongoing issue since the day I purchased my vehicle in January 2017. I notified the dealership about the issue and they stated they would open a case with Toyota

Power training went out I-70 in warren county mo where all the construction is. It put my 4 autistic kids in danger. No insurance looked at the vehicle. However a mechanic did look and diagnosed it which look over a week for. Kaizen auto in wentzville mo diagnosed it

March 5th purchased a battery from Autozone Z net Fit Match that caused cascading electrical and life -safety risk while traveling from hewitt, TX to Washington DC for our families spring break trip including 4 minor children. Component: 12-Volt Battery / Electrical System / Power Steering / Service Brakes Summary: Vehicle suffered catastrophic failure of Power Steering and Braking systems while in motion due to the installation of an incompatible lead-acid battery recommended by AutoZone’s 'Z-Net' catalog. Despite Toyota Technical Service Bulletin T-TT-0523-19 (Jan 2019) stating this VIN requires an Enhanced Flooded Battery (EFB/AGM) for its Stop-Start system, the retailer’s database continues to misidentify standard batteries as compatible. This mismatch causes a voltage drop that disables critical safety modules ('Limp Mode'). I have video evidence of the catalog error. This is a systemic misrepresentation affecting 2017+ Toyota Highlander safety compliance.

My husband and I were driving down the highway when the front part of our sun roof shattered.

The component that has been deemed in need of replacement is the UA80 8-speed transmission. It is available for inspection as of today's date, April 1, 2026. My and my family's safety has been put at risk of the transmission failing, especially at highway speeds. The problem was reproduced and diagnosed at both a local repair garage in Westwood, MA and the Nucar Toyota dealership in Norwood, MA. Both facilities inspected the transmission, heard a high-pitched whining noise, and determined it was irreparable and needs to be replaced. This high-pitched whining noise is a known and well-documented problem with these transmissions and needs to be included in a widespread manufacturer's recall.

I had problems in gear shift the car when start moving it’s go very slow it’s need about 1 minute to change the shift. The Toyota dealership recommended me to change the transmission with the cost $11,000

Purchased my 2017 Highlander in June of 2017. At 4912 miles noticed the transmission was slipping. Contacted the dealership and was told from an employee that in his 20 plus years he had never had a transmission do that. Took it to the dealership and it was the transmission. It was replaced under warranty. In January of 2026 took it to the dealership after noticing a weird whinnying sound when running. After running a diagnostic test I was informed that my transmission needed replaced again. It only has 72,426 miles. Was told that the transmission was on back order and when asked if safe to drive, told yes.

I own a 2017 Toyota Highlander with 6 cylinders (engine model 2GR-FKS). It has 107,000 miles. I brought it to my dealer for inspection and service, and noted that it was making a whirring/whining sound upon acceleration. There were no warning messages on the dashboard to alert me of any issues. The dealer reported back to me that the transmission was failing and quoted $11k to fix it. Upon researching this issue, I learned that this is a known problem with 2017 model Highlanders.

I drive a 2017 Toyota Highlander and am having issues with the transmission. The issues and poor craftsmanship on the UA80 8-speed transmissions. Toyota offered Technical Service Bulletins T-SB-0160-18, T-SB-0008-21, and a limited Customer Support Program (CSP ZJC). But very few VINs were included and there are tons of Highlander owners with this transmission facing $10,000+ repair bills for what is supposed to be one of the most reliable cars and car brands on the planet. This is very wrong. Toyota has not stood by its customers and have not done right by owners. Toyota needs to recall the transmissions and offer a remedy at no cost to the customer. This needs to be done now. It's completely unacceptable. Thanks for what you do and for reading! Appreciate you guys very much.

-- What component or system failed or malfunctioned, and is it available for inspection upon request? This report is regarding a premature transmission failure in our 2017 Toyota Highlander equipped with the UA80F 8-speed automatic transmission. Our highlander is currently stuck at High Tech Automotive in Wenatchee, WA 150+ miles from home after experiencing a transmission failure on the highway. -- How was your safety or the safety of others put at risk? During the transmission failure while driving on the highway the Check Engine Light came on as well as ABS light and vehicle went into a limp mode. The transmission failure and subsequent limp mode rapidly decreased our speed while traveling on the highway and forced us to limp the vehicle at low speeds across traffic putting ourselves and others traveling on the highway at risk. This vehicle has been well maintained and serviced in accordance with Toyota’s recommended maintenance schedule. Despite this, the transmission failed unexpectedly during a recent family road trip to Wenatchee, WA, leaving us stranded far from home. -- Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, the vehicle was towed to High Tech Automotive in Wenatchee WA (where it is currently stranded). The diagnostics report there confirmed proper transmission fluid level and a failed transmission with burnt transmission fluid. -- Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Not yet. A request for assistance was sent to Toyota today. -- Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? There were no warning lamps, or messages. We've had the vehicle maintained and there was a whirring sound which we had inspected at Dougs Auto Tune and Repair thinking it could be the timing chain or alternator but there was no indication of transmission issues.

Was on drive from work in 2017 toyota highlander XLE. Noticed low whining sound coming from transmission. Made appointment with toyota dealership. They identified transmission whine as requiring full replacement and projected to fail soon. Vehicle mileage was at 116k miles. There are no ua80 trans available in US and none coming in. Was told my VIN didn't qualify for CRP CJZ and TSB bulletin. The UA80 trans has known failure of this type. Replacement cost is 10K, use is dangerous, and failure is unacceptable.

The contact owns a 2017 Toyota Highlander. The contact stated that upon taking the vehicle to an independent mechanic for service, the contact was informed that the engine was leaking due to a timing chain failure. The contact was advised that the engine needed to be taken apart to repair the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure, and a case was filed. The failure mileage was approximately 60,000.

The paint on the hood is flaking off. There is no reason other than the paint being defective for this to happen in this manner. We just noticed it today. 11/14/25

Leaking fuel line due to deterioration of plastic liner in fuel line.

Transmission when the car first starts up is slipping. No dipstick for checking Transmission fluid.

The contact owns a 2017 Toyota Highlander. The contact stated that when the vehicle was taken to a dealer for routine maintenance, the dealer informed the contact that the rear main seal was leaking and needed to be resealed. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 95,402.

My vehive has 122,000 miles...I recently received an airbag mafuction warning on the dash info system and to contact dealer. The dealer states this driver side airbag is now defective and needs to be replaced at a cost of $1100.00 The airbag has never been deployed. How is this noit covered under safety requirements on current vehicles? How do I know that the part was not defective when initally installed?

Transmission failure causes vehicle to not accelerate in low gears. Toyota has a CSP for this issue on the same model year but this "Vin" Is not a part of it. This is a major safety issue.

The transmission is experiencing harsh and sometimes delayed shifting and sometimes reduction of power. This can result in unpredictability when going from a stop and then crossing traffic. If the transmission fails while I am making an unprotected left turn it pups leave me vulnerable to side impact from on coming traffic. The dealer was able to reproduce the issue when I took it in and quoted me $11k for repair. Toyota is an aware of issues with this specific transmission (UA80) and issued a Service Bulletin for it. My transmission fell within the serial number range for replacement but didn’t pass the third gate for coverage related to a speed sensor issue. That said, there is massive back order on this transmission highlighting a much broader problem with the part. To answer the final question, I never saw a warning light.