2021 Hyundai Palisade electrical system problems

“Blind spot warning system stopped working. Then speedometer stopping working registering 0 both digital and the circle. Then all lights started going off on the dashboard. My dealer cleared codes and errors went to history but not active. When I went to drive again blind spot didn’t work and speedometer didn’t work. I didn’t drive further after that. I heard there was an issue with the 2022 dashboard cluster.”

“I am reporting a potential safety defect involving my 2021 Hyundai Palisade Calligraphy AWD. The vehicle has experienced repeated engine and drivability problems and multiple breakdowns following replacement of the engine by Hyundai. The original engine developed excessive oil consumption and was ultimately replaced by Hyundai with a new engine. Following the engine replacement, the vehicle experienced numerous additional mechanical problems and repair attempts, including engine rattling/pinging, intake-manifold replacement, oil valve-seal replacement, multiple cylinder misfires, ignition-system problems and an ignition-coil failure. Most concerning are repeated incidents involving severe shaking/lurching, loss of engine power, stalling and failure to restart. During one incident following repairs, the vehicle ran extremely rough, stalled and would not restart after approximately 20 miles of driving and had to be towed back to the dealership. During another incident, the vehicle experienced heavy shaking on startup, stalled and had severely limited power. Diagnostic history showed misfires involving multiple cylinders. On June 29, 2026, at approximately 103,671…”

“Component/system, available for inspection? Rear visibility system — AVN head unit's processing of the rear camera image. On shift to reverse, screen flickers, shows blinking green, or no rear image. Vehicle available for inspection. Original camera was replaced Jan 2026 and retained by the dealer, not returned. Safety risk? Daily driver used for school pickup. Failure is warm-restart dependent — engine running, repeated shifts into reverse — which is exactly the pickup-line condition. Rear visibility is lost while children move behind the vehicle. System works reliably only after 25+ minutes shut off. Reproduced/confirmed by a dealer? Yes. Crain Hyundai of Bentonville, RO H3CS1330630, 1/13/26. Camera replaced; failure persisted. Same RO then states the head unit "IS GETTING TOO HOT" and needs replacement. No further diagnosis performed. Inspected by manufacturer, police, insurance? Not directly. Hyundai Motor America reviewed (Cases 42288449 / 42326908 / 42619220) but relied solely on dealer diagnosis and confirmed in writing 6/22/26 that it does not audit dealer measurements. No police or insurance involvement. Warning lamps/symptoms, first appearance? First…”

“The speedometer, lane departure, heat gauge, and RPM’s and the whole speedometer cluster will stop working. It does this all the time you never know if it will work and then sometimes it will randomly come back but it’s more in the heat it will not work.”

“The contact owns a 2021 Hyundai Palisade. The contact stated that while driving at a low speed, the power steering failed, several warning lights illuminated, and the engine suddenly stalled. The vehicle was towed to a dealer, where the battery was replaced; however, the failure recurred two days later. The vehicle was then towed to an independent mechanic, where it was diagnosed with a failed alternator. The contact paid for the alternator replacement out of pocket. The contact stated that while at a complete stop recently, the brake pedal would travel to the floorboard when depressed, causing the vehicle to shudder. The vehicle would only resume normal operation after the accelerator pedal was depressed. The vehicle was returned to the dealer, but had not yet been diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 77,000.”

“Vehicle Incident Statement – 2021 Hyundai Palisade Driver/Owner: [Your Name] Vehicle: 2021 Hyundai Palisade Date of Incident: [Insert Date] Location: Restaurant drive-thru (vehicle stopped in line) Summary of Incident On the date listed above, I was stopped in a restaurant drive-thru lane with the vehicle in drive and Auto Hold engaged. The vehicle had recently had a battery replacement performed at a Hyundai dealership on the day prior to the incident (repair order available). While stopped, I pressed the accelerator to move forward in the drive-thru line. The vehicle did not respond immediately. There was a brief delay, followed by a sudden and unexpected surge of acceleration. Vehicle Behavior The vehicle accelerated rapidly after a short delay in response to accelerator input The brake pedal felt normal when pressed Applying the brake did not appear to slow or stop the vehicle effectively The vehicle continued moving forward and struck another vehicle Additional Relevant Information The Idle Stop & Go (auto start/stop) system had not been functioning for approximately one year prior to the incident On the day of the incident (after battery replacement), the…”