2017 Hyundai Tucson Electrical System Problems

Following the knock sensor detection system update, this car has a P1326 code that forces it into limp mode. Occurs during moderate-hard acceleration, e.g. getting on a highway. The car is limited to ≤2000 RPM and ≤ 45 mph, and rapidly decelerates to that speed if necessary. Acceleration is very limited. This occurs roughly every two weeks, despite having a brand new sensor installed by Hyundai. Hyundai has also allegedly performed cleaning on the sensor and related parts. This has been going on since November, when the recall that installed this update was performed.

I am writing regarding a serious incident involving negligent automotive service performed by Jiffy Lube Store #687. On October 24, 2025, I took my 2017 Hyundai Tucson to this location for a standard oil change. I trusted that the service would be completed properly and safely. However, on November 21, my vehicle’s oil lamp unexpectedly illuminated. Concerned, I returned to Jiffy Lube on November 22, where employees informed me that they had “sealed the small leak and topped [my] oil,” adding that I was entitled to two top-offs between oil changes and “should be good for two weeks.” Tragically, the very next day, November 23, the oil lamp flashed again. My vehicle then shut off while I was driving, with my children in the back seat. This was a frightening and dangerous situation for all of us. I am now left confused, stressed, and unsure of the full extent of the damage.

Sensors something to do with the motor and not sure where the other sensors is related to could be the motor as well. The safety was not good due to it shut off in the middle of traffic and making wraddling noise. I took the vehicle to the dealership where purchase from. They have done nothing besides fixed one thing that I know of supposed to been the surpension. But the other problems was not fixed No it has not been inspected by anyone The warning lamp come on and just blinking none stop

My 2017 Hyundai Tucson has completely broken down will not go into reverse had a diagnostics at Hyundai. I thought it was going to be covered because of the class action suit. My car apparently was not in the recall or the suit. I don’t understand I have the identical problem of the dual clutch transmission issue. I’ve tried to get Hyundai to do good-faith repair they refused. I’ve contacted Carmax where I purchased the vehicle. They had the car when the lawsuit was finalized I didn’t know anything about the lawsuit or the problem with the vehicle. I’ve had the car for five years it’s at 85,000 miles. I don’t know what to do.

The controls (buttons) on the right side of my steering wheel progressed from slow to respond to completely unresponsive, and then the driver airbag light started coming on. At first it was intermittent, then constant. I didn't expect those two issues to be related but did come to learn it was the clock switch. According to my Hyundai dealer, this is a known issue in several other years/models of Hyundais and they have extended those warranties, "but it hasn't reached the Tucson yet". I was told that either 1 - my airbag wouldn't deploy or 2 - it would deploy randomly when I was driving the vehicle. I spent nearly $1000 in diagnostics and repairs.

limp mode check engine light code p1326

Car cuts off when driving the speed drops down automatically stops the dash lights go out and can’t start it right away

Power windows will go down by driver buttons but driver buttons will not work to make windows go back up. Engine is stalling, can smell exhaust, manifold is said to be needed to be replaced. Burns oil badly.

Rear driver side door suddenly will not open from outside or inside. A rear passenger would be essentially trapped in the car should an incident/accident happen. I googled and it seems this is a well known issue affecting several model years of Hyundai, including my 2017 model. I do not see a recall for this extremely dangerous issue.

All of the lights on the dashboard and check engines light were illuminated. The speedometer would not work and the stick shift would stick in park causing me to have to release the shift lock manually to drive. The failure mileage was 59,450.

Unable to open passenger door on driver side. Unable to open from the outside or the inside.

Unknown the car just start malfunctioning

Car had smoke engine overheating this is the 3rd engine I got sick from the smoke I don’t feel safe in that car

The vacuum pump on my 2017 hyundai has a faulty cap resulting in an electrical error to the CAN system. This causes dash lights abs 4wd parking break stability control tpms sensor check engine light to eliminate and the speedometer to not work. All of the systems are not opperating due to the system not being able to communicate. It is illegal and a safety issue to not be able to use the speedometer.

On July 22nd, the duel clutch malfunctioned & caused the vehicle gear shift to no longer engage. The car does not move in Drive or Reverse. It can only be pushed in Neutral or towed. This occurred while I was driving home on the highway with no warning lights or prior symptoms indicating a potential issue. The vehicle has not yet been seen by Hyundai but they did say that since my VIN was not registered to the existing recall, there is not much they can do & any repairs would be out of pocket. It has been seen by our family mechanic, PepBoys & has currently been sitting at AAMCO with no solution as of today since August 2nd. Geico said since this is a mechanical issue & not an accident, they cannot assist. Carmax Customer Relations (where I purchased the Vehicle on March 12th, 2023) has been informed but so far offered no solutions. I am told they cannot offer much assistance due to the 90-day warranty being surpassed, extended warranty not being purchased & the current milage on the car. A case with Hyundai Customer Relations has also been opened as of today, August 15th & they are escalating the issue to their legal department as we are considering taking legal action at this point.

My truck was stolen so most likely they messed up my ignition. Before this my lights keep going out every time I replace one a different one goes out. Wheel always going out of air and my truck always jerking when driving or breaking. I am a victim of the “Kia and Hyundai” boys in Baltimore city that’s going around stealing people cars.

Faulty wiring on wiring from alternator led to electrical fire

The 2017 hyundai tucson will trap you inside the car. The doors will work intermittently and other times they simply will not open. Even when the car is unlocked. This was recalled on certain models and years but not this one. Huge safety concern being trapped inside the car or stuck outside car.

Problem with the engine

Car has been hesitating to start this last week, Friday 6/2/23 warning lights came on & air conditioning stopped working. My local Hyundai shop is booked 2 weeks out so I already have an appt for 6/13/23. But on 6/2 I barely made it to a shop close to my home for a diagnostic check. Code P1111 was stored, cleared & retested. It's for fuel pump, circuit was tested & no faults were found & test driven with no return of code. Picked up car on Monday 6/5 with no issues. Tuesday car hesitated to start, 3rd time it started with no issue & no warning light/s. Today 6/7 around noon while I was making a turn the car completely shut off without warning. I've also noted that the oil level is always low, I have to check & put in oil at least every 2 weeks but there doesn't seem to be an oil leak. Also from stop to go at a light for example the car hesitates and then jerks forward. In the past I was told at a Hyundai facility that this is normal because of the dual clutch or something to that fact. The incident today was scary as there were a lot of cars behind me and cars coming towards me. The attached pic of warning lights was from Friday, 6/2/23.