2021 Hyundai Palisade electrical problems

Filed Oct 6, 2026 · Acceleration, Driver assistance · NY

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.

Filed Sep 1, 2026 · Electrical, Engine · IL

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 miles, I was driving at approximately 50 mph when the vehicle began to lurch and shake, lost power, stalled and would not restart. The vehicle had to be towed back to the Hyundai dealership. The unexpected loss of propulsion and stalling while traveling at approximately 50 mph created a serious safety concern because I could no longer rely upon the vehicle to maintain power in traffic. The dealership subsequently identified an ignition-coil short/failure and replaced an ignition coil. The vehicle has nevertheless continued to experience additional mechanical problems. The vehicle is currently again at the Hyundai dealership. It has generated diagnostic code P0430 for Bank 2 catalyst efficiency below threshold, and Hyundai has recommended replacement of both catalytic converter/manifold assemblies. Th

Filed Aug 3, 2026 · Driver assistance, Electrical · AR

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 reported by my wife (primary driver) in June 2025; not reproducible on demand for some time, consistent with the intermittent warm-restart pattern later documented. No warning lamps, no DTCs in any accessible module. Only symptom is the display failure itself. 60+ structured tests logged 2/2–2/9/26 documenting the warm-restart pattern. Mileage 63,679 at service. Unresolved as of 8/3/26.

Filed Jul 14, 2026 · Acceleration, Electrical · AR

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.

Filed Jul 6, 2026 · Brakes, Electrical · 77,000 miles · OH

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.

Filed Jul 5, 2026 · Electrical · AL · crash

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 auto start/stop system began functioning again unexpectedly The vehicle had no known prior issues with unintended acceleration No floor mat or physical obstruction was present affecting the accelerator pedal (to the best of my knowledge) Vehicle Condition The vehicle has not yet been repaired or inspected and is currently being held pending evaluation. I am requesting that all diagnostic data, including vehicle event data recorder (EDR) information and control module logs, be preserved and reviewed. Request I am requesting a full diagnostic and safety review of the vehicle’s electronic throttle, braking, and Auto Hold systems, including any stored fault codes and event data. Check engine light was on for a week prior to service at dealership and dealership told me they could not service it at that time.

Filed Jun 3, 2026 · Electrical · CA

The digital instrument cluster on my 2021 Hyundai Palisade completely and intermittently fails while the vehicle is in motion, dropping the speedometer, fuel gauge, and all safety indicators to zero. The system also issues erroneous audio warnings such as 'wrong way driving detected' while the cluster is blank. I have documented this severe safety hazard on video multiple times over the last 14 months and provided the footage to Dublin Hyundai. Despite three separate dealership visits (April 2025, June 2025, and June 2026), the dealership refuses to repair the vehicle stating they cannot replicate the issue and dismissing my video evidence. This mirrors the exact manufacturing defect outlined in Hyundai Safety Recall 230 (the federal safety agency Campaign 22V353) for the 2022 Palisade. I am requesting an investigation to expand Recall 230 to the 2021 model year, as driving without a speedometer or warning lights is a life-threatening safety defect.

Filed May 28, 2026 · Electrical, Engine · TN

Multiple attempts to have car repaired for a year and a half with no resolution. See attached docs. Included is a letter to Hyundai, timeline of subsequent events, warranty info. Invoices were too large to upload, there are 7 of them.

Filed Apr 22, 2026 · Electrical, Engine · TX

The engine oil system failed due to a persistent oil leak that was present from the time of purchase on December 16th 2024. The vehicle is available for inspection upon request and is currently immobile due to a completely seized engine. My safety was put at serious risk because the vehicle has no functioning low oil warning indicator to alert the driver of critically low oil levels. I was driving this vehicle regularly for work with no indication whatsoever that the engine was losing oil. A seized engine can cause sudden and complete loss of vehicle control which puts not only the driver but other drivers and pedestrians at risk. This failure occurred without any warning while the vehicle was in regular use. The oil leak was brought to the selling dealership, Auto Merchants Inc. in Plano Texas, for repair on January 6th 2026. They kept the vehicle overnight and confirmed it was fixed. The problem was not resolved as the vehicle continued losing oil. On March 3rd 2026 I discovered the engine was completely empty and added 6 full quarts of oil with no warning light appearing. I also contacted Hyundai consumer affairs and the Hyundai dealership directly who confirmed the manufacturer warranty had already expired at the time of purchase on December 16th 2024 and declined to cover the repair. The vehicle has not yet been formally inspected by the manufacturer or insurance representatives. The dealership serviced it on January 6th 2026 and claimed the leak was repaired however the engine seized on April 20th 2026 due to continued oil loss. There were zero warning lamps or indicators of any kind prior to the engine seizing completely on April 20th 2026. No low oil warning light appeared at any point during the 4 months I owned this vehicle despite the engine running completely out of oil on three separate occasions. The only symptom prior to full engine seizure was the vehicle sputtering when coming to a stop on April 19th 2026, one day before the engine seized completely

Filed Apr 19, 2026 · Driver assistance, Electrical · NY

While vacationing in Myrtle Beach with my family the vehicle alarmed and then progressed to critical failure of safety functions while traveling at approximately 55mph on Friday April 3, 2026. The vehicle was brought to Myrtle Beach Hyundai where it was eventually diagnosed and repaired as an Alternator issue that I have found to be common with this specific vehicle. The issues I have experienced with this vehicle go far beyond a typical mechanical concern. Over time, the vehicle has exhibited repeated electrical system malfunctions, including: - False blind spot collision warnings when no vehicles are present - Intermittent failure of the crash avoidance system - Loss of cruise control functionality tied to system faults - A broader electrical failure event that triggered multiple warning systems simultaneously Most concerning, these failures have occurred while the vehicle was in motion, creating an unpredictable and potentially hazardous driving condition. The loss and unreliability of critical driver-assist and safety systems directly impacts driver awareness and vehicle control, which raises serious safety concerns. Despite multiple attempts to have this diagnosed through the dealership network while under warranty, no definitive root cause was identified, and the issue has persisted. This suggests the possibility of a systemic electrical defect rather than an isolated component failure. Additionally, I have found that similar complaints involving electrical system irregularities and cascading warning system failures have been reported by other owners of this model, further supporting the concern that this may represent a known or emerging defect pattern. Given these factors, I do not believe this situation should be categorized as routine. Instead, it warrants review under the lens of: - Vehicle safety risk - Potential defect trend - Failure of critical driver-assistance systems during operation This vehicle has not been inspected by the manufacturer.