2022 Hyundai Santa Fe electrical system problems

“I am filing a formal safety complaint against Hyundai Motor America for non-compliance with federal safety recall regulations regarding Recall 244 (NHTSA Campaign 23V181/235) for my 2022 Hyundai Santa Fe (VIN #[XXX]. I have been experiencing a severe parasitic battery drain that leaves the vehicle completely dead if parked for more than three days. This is a known, definitive symptom of moisture intrusion and short-circuiting within the tow hitch harness module covered under this active fire-hazard safety recall. The vehicle has died four times and required a full battery replacement. I have asked to have a re-check of the recall under Federal rule 49 USC 30120. I have filed a complaint with Hyundai and have a case #. They have now told me there's nothing they can do and I will have to pay to have it checked. The tow hitch is showing live voltage on a meter reader too. I've been advised to pull the fuses but there are none in the trailer hitch spots in the fuse box. The empty slots show an incomplete recall fix was performed or wired wrong causing an un-remedied parasitic power short active in this car. My car is a fire hazards! Hyundai won't help me. I have…”

“The horn has now stopped working in my vehicle twice. It was replaced 01/27/2023, and is now non-functional again. I believe this to be a safety issue as I have no way to warn other drivers or pedestrians of my presence, if necessary. One example of this, was that a vehicle was proceeding into my lane on the interstate yesterday afternoon and I had to avoid them hitting my vehicle by driving onto the shoulder of the road, as I could not use my horn to let them know they were coming into my lane while I was on the side of them.”

“I did a navigation update as requested by the infotainment system on the Hyundai. After the update, the air conditioner would not turn on when the ac button was depressed . I took the vehicle to my local Hyundai dealer and they found the ac blower and ac button working intermittently. After further inspection, the mechanic found the multi fuses that sit on the PCB bloc had one burnt fuse that did not blow and was still hot and the PCB block had melted around where the fuse connected to it. ( Hyundai stated that they required the damaged PCB fuse, the PCB block and the harness). I'm concerned that the electrical short discovered by the Hyundai mechanic could have progress and burnt my car or my house since I keep my car in the garage. The Mechanic working for the Hyundai dealer found the burnt fuses and PCB block and kept them after replacing them with new parts. The ac was working fine until I did the navigation update and there were no warnings whatsoever.”

“I have videos of these two incidents and others that I could not upload. While driving on the PA Turnpike at 4:25PM on 5/22/26 75 mph my accelerator pedal stopped responding, my front collision warning light, engine, EPB, and numerous other lights came on across my dashboard despite there being no contact with any object and my speed rapidly dropped. The front camera came on as if there was an object too close. I was in the middle lane. While I was trying to move to the shoulder there were tractor trailers behind me and to my right that began flashing their lights because my speed drastically dropped and was unable to safely stay with the flow of traffic in the heavy rain. While still in Drive car started changing through notices on my digital screen "Check Blind-Spot Safety system" "Check Forward Safety system" with the car crash icon, and "Check Driver Attention Warning (DAW) system." Then I began trying to press the accelerator pedal again and the car would not move at all but the tachometer was going to 2x1000rpm. When I turned the car off and turned it back on again the engine light was still on, but the accelerator pedal was responsive. About an hour…”

“Vehicle: 2022 Hyundai Santa Fe | Current Mileage: 140,000 Description of Safety Defect: While operating a 2022 Hyundai Santa Fe at speed, the vehicle suffered a sudden, complete, and catastrophic loss of motive power in the middle of a live, active roadway without any prior warning or dashboard indicator lights. The transmission abruptly dropped out of gear and the engine shut down entirely, trapping the driver and three young children in active traffic and creating an immediate, life-threatening highway safety hazard. The vehicle was towed to Sport Durst Hyundai in Durham, NC, where technicians confirmed a total internal transmission failure where the gears fail to engage. This exact mechanical failure mechanism directly mirrors the severe engineering defect detailed in NHTSA Campaign Number 22V746000 (Hyundai Safety Recall 236) for electric oil pump failures causing a sudden loss of drive power. Hyundai Motor America Corporate Case Management has issued a flat denial of all safety and goodwill repair coverage based strictly on the vehicle's 140,000 miles, claiming that mileage absolves them of product liability for a catastrophic drivetrain safety defect that…”

“Beginning on 04/17/2026, my vehicle began displaying multiple safety-related dashboard warnings simultaneously, accompanied by audible alerts. The warnings included the Forward Collision Safety System, Blind-Spot Monitoring, Electronic Parking Brake (EPB), Stability and Traction Control, Lane Keep Assist, and AUTO HOLD — all activating at the same time. These warnings reappeared on several occasions and were photographed with date and location data embedded in each image. My vehicle was brought to Burlington Hyundai dealership, where a repair order was opened and a loaner was provided. The car was returned without the issue being fixed. Within days, the same warnings reappeared and the situation worsened. On multiple occasions, the engine shut off completely and the transmission shifted into neutral on its own while my vehicle was being driven at approximately 20 to 40 mph. On at least one occasion, the parking brake engaged automatically without any input from the driver. A dashboard photo clearly documents the message "Engine Off! Shift to N, then start engine." These failures are a serious danger to everyone on the road. When the engine shuts off while…”