2020 HYUNDAI TUCSON Electrical System Problems

On December 27, 2025, while driving, the engine suddenly lost power and the vehicle entered limp mode and became undriveable. A warning light appeared and diagnostic code P1326 was later confirmed, indicating engine bearing failure. The vehicle could not be driven safely and required towing to a Hyundai dealership the following day. The engine failure caused a loss of propulsion safety risk. The vehicle remains out of service pending a full engine replacement. The vehicle is available for inspection at a Hyundai dealership.

I have experienced 4 repeated issues within 4 months with my vehicle. Starting in September 2025 and the 4th and current issue today 1/12/26. Driving when all of a sudden all of my brake components lamps come on dash oard, forward collision alert, and check engine, my vehicle struggles to accelerate accurately. Blue Link diagnostic throws various codes such as ECM, Transmission Control System, even "multiple possible issues". Each time my vehicle has been at Hyundai dealership for repair. Each time they repair something different 1st- replace ABS module and hydraulic brake, 2nd - happened out of state at my mother funeral and replaced my ECM, 3rd couldn't figure it out and guessed it was my Forward collision camera and replaced it, 4th - is today and awaiting dealership diagnosis. This issue has left me stranded several times local and long distance, occured in middle of driving including on highway,...

The contact owns a 2020 Hyundai Tucson. The contact stated that the vehicle unintendedly shut off while driving. The vehicle was restarted. There were no warning lights illuminated. The local dealer was contacted and scheduled an appointment. The vehicle was not yet diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 70,000.

The contact owns a 2020 Hyundai Tucson. The contact stated that upon starting the vehicle, the Brake Auto Hold was engaged unintendedly and failed to disengage upon pressing the button, which required the contact to turn off, restart, and drive the vehicle for some time for the Brake Auto Hold to disengage. The contact stated that the failure had been recurring. The contact stated that the infotainment system was inoperable. Additionally, the passenger's side rear seat belt failed to buckle as intended, and the passenger's side rear door handle fractured while the contact was opening the door. The dealer and the manufacturer were not notified of the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 102,000.

The contact owns a 2020 Hyundai Tucson. The contact stated while driving at various speeds, the vehicle stalled and failed to accelerate while the accelerator pedal was depressed. No warning light was illuminated. In addition, the contact stated that the A/C was blowing warm air. The contact lives in a hot climate and was concerned for the safety of her 2 minor children. The contact stated that on three separate occasions, three A/C compressors were used to attempt to repair the vehicle at a service center however, the failure persisted. The vehicle was taken to a local dealer where it was diagnosed at the owner’s expense due to the warranty being invalid. The vehicle was not repaired. Upon further investigation, the contact related the failure to NHTSA Campaign Number: 20V543000 (Service Brakes, Hydraulic). The manufacturer was not made aware of the failure. The failure mileage was approximately 30,000.

Had for a year. 6 months ago, started sputtering, surging, slowing and dying on a regular basis. Have had it shop at Chapman used in Tucson, AZ and Lawley Hyundai in Sierra Vista Arizona 3 times. Chaan couldn't repair, so we went to Lawley. The mechanism there keep saying they cannot reproduce! The engine malfunctions 3-4 time during any drive we do. Has been going on for 6 months.

The vehicle is a 2020 Hyundai Tucson with AWD. Current mileage of the vehicle is 58,309. In the last 10K miles, there have had 4 separate instances of a sustained flashing check engine light that has put the car into limp mode. Since the first instance, a knock sensor, catalytic converter, and spark plug coil, among other things, have been replaced. However, the issues persist and have yet to be resolved. The engine continues to misfire, resulting in dangerous driving situations. Most recently (XXX) the car went into limp mode on an interstate highway where the vehicle was unable to accelerate and could not exceed 2000 RPMs. The code scanner read P1326 - Glow Relay Short Circuit. This was just a week after the vehicle was towed to McGovern Hyundai in Brockton, due to the car being in limp mode (XXX) and the vehicle was given a clean bill of...

2020 Hyundai Tuscon May I have had numerous incidents where my stereo navigation screen goes black, and then instantly comes back. This happens frequently; whether or not my phone is plugged in. I have stopped plugging my phone into the car. May 1, 2024 As I was backing into my garage this afternoon I started the turn to get into my driveway. I turned the steering wheel tight and it seemed to lock up just like the car had turned itself off. My vehicles main screen went blank along with the stereo navigation. May 16 2024 As I backed into my driveway and straightened my steering wheel position to get into the garage the vehicle screen went black along with the navigation stereo screen I felt the steering wheel tug a little bit along with a knocking noise All lighting quickly came back and then the same exact thing happened...

NHTSA should have a non-official recall warning for Hyundai vehicles that have this software based Safety Defect, which is some models don't have a Passive Engine Immobilizer, and the vehicles can be easily stolen by starting the engine with a USB cord. Thankfully Hyundai(recall) offered a free Anti Theft Software Update, and a steering wheel lock. I checked my VIN number with the Hyundai Dealership in Oregon, and they said my car already received the Anti Theft Software Update. The only reason I knew my 2020 Tucson had this issue, is because State Farm cancelled my insurance a month after I started paying for it. State Farm and Progressive currently deny new policies for vehicles without a Passive Engine Immobilizer. Also State Farm still denied my insurance after I got the software update. Affected Hyundai models from 2011 to 2021 that have standard “turn-key-to-start” ignition systems/without a Passive Engine Immobilizer,...

Warning lights for Lane keeping, Blind Spot, ABS, Autohold, Foward collision systems came on and will not reset. Reports of this all over hyundai forums and owner fan pages (Facebook, etc). It can fool the driver into believing the car is about to be in an accident prompting panic response in drivers.

When parked and car is turned off , if i don’t get out right away (key in ignition still or not) a “battery discharge warning” shows up on my display.

While driving one evening, it was brought to my attention that my passenger brake light was remaining on, when I was not braking. A week later, both sides are on. This happens only if my headlights are on - automatically or if I manually turn my headlights on. The back center light will only come on when I high the brake pedals. Again, back brake lights on driver and passenger side remain on regardless of brake pedal is engaged.

In September 2021 I bought the reference unit and on 4 different occasions I could not use it because it had no power. I took it to the dealer and they didn't find any problem, I used it again and again it ran out of power. It has currently been at the dealer for 5 weeks and they have not found the problem. I had a conversation with the previous owner and she told me that she had returned the unit to the dealer for the same situation. So far the dealer has not received an answer as to what is wrong with the unit. Nor have they provided me with a vehicle. This situation has affected my family since daily we are complicated about how to get to our jobs and schools. The dealer is Hyundai from Cupey, Puerto Rico PR-8838, San Juan, 00926 On April 16, 2022 dealer...

PER THE NHTSA RECALL 20V-543, THE TUCSON HAS A RECALL FOR POSSIBLE BRAKE FIRES SINCE SEPT 2020. AS OF MARCH 2021 NO DEALER IN THE AREA YET HAS PARTS TO PERFORM THE RECALL SERVICE. HYUNDAI IS TAKING AN EXCESSIVE AMOUNT OF TIME TO REMEDY THE FIRE HAZARD.

IAM WAITING FOR DEALERS TO TAKE CARE ABOUT A "RECALL" FOR TUCSON MODEL YEARS 2019,2020 AND 2021FROM THE MONTH OF SEPTEMBER 2020 . IS SUPPOSE MY TUCSON2020 COULD BE INFIRE BECAUSE OF IT,BUT I DON'T SEE DEALERS ARE INTERESTED FIXING THE PROBLEM NOW I AM WAITING FOR KENDALL DEALER IN MIAMI BECAUSE DEFINITTLY HOMESTEAD DEALER DO NOT WANT TO DO IT.

RECALL #195 FIRE HAZARD DEALER SAID TO CALL BACK IN 3 WKS. TO SEE IF PARTS ARE AVAILABLE. (PARK AWAY FROM HOUSE. CAN CATCH FIRE. IN THAT CASE ITS NOT SAFE TO DRIVE. (BRAND NEW NOT AS IS.} SHOULD BE ELIGIBLE FOR LONER CAR .AND COMPENSATED FOR TIME I CANT USE CAR.

MY 2020 HYUNDAI TUCSON WAS PURCHASED NEW THIS YEAR FROM WEST HERR HYUNDAI I'M WILLIAMSVILLE NY. I WAS NOTIFIED OF A VEHICLE SAFETY RECALL RELATED TO ABS ISSUES IN SEPTEMBER 2020. I HAVE CONTACTED THE DEALER EVERY WEEK SENSE THEN, AND THEY CLAIM THEY ARE UNABLE TO COMPETE THE RECALL DUE TO A LACK OF PARTS. I BELIEVE THE DEALER IS NEGLIGENT IN ADDRESSING THIS ISSUE AND I WOULD APPRECIATE HELP GETTING THIS SAFETY ISSUE REMEDIED.