2022 HYUNDAI IONIQ HYBRID Service Brakes Problems

Auto hold at stops unexpectedly stops working with car in drive, it can suddenly roll forward Electric parking brake becomes inoperative

The Electronic Parking Brake (EPB) on my 2022 Hyundai Ioniq Hybrid has a recurring safety defect. The EPB warning light continues to come on and off intermittently even after EPB components were replaced. Diagnostic Trouble Codes C2416 and C2417 have been detected multiple times. This issue first occurred at around 10,000 miles, while the vehicle was still under factory warranty. At that time, the dealer only performed a cleaning procedure, which did not resolve the problem. Over the years, I returned to the dealer multiple times, but they refused to perform repairs unless the warning light was present during diagnosis. Frequently, the light turned off before inspection, leaving the defect unresolved. At approximately 87,000 miles, the dealer finally replaced EPB components at my expense (out-of-warranty repair). However, even after this replacement, the EPB warning light has continued to reappear, proving that the underlying safety defect was never fixed. This is a serious and ongoing safety concern. The EPB is a critical braking system component, and its failure could prevent the vehicle from safely parking or holding on a slope. Because this problem began during the warranty period, was never properly resolved, and persists even after paid repair and part replacement, I believe this represents a manufacturing defect that requires investigation and potential recall.

The "Auto Hold and EPB" yellow indicator light constantly turns on, which, according to the owner's manual, suggests a sensor issue. When I press Auto Hold after starting the car, the light comes on immediately. Even if I don’t press the Auto Hold button, the light still turns on. Yesterday, after driving approximately 9 miles, the light came on again and began beeping every 7 to 8 minutes while driving.

Electric Parking Break and Auto Hold lights, with system disengage. History of electrical short in codes system. Falls under Hyundai technical service bulletin # 23-BR-001H. Dealer ship refuses to repair if lights are not currently on. According to bulletin must be repaired if on or in history. Same Issue as NHTSA # 11617668 and NHTSA# 11633119

EPB and auto hold lights come on intermittently with no user input or obvious reason. This does not occur every time that the vehicle is driven and does not have an obvious cause nor pattern. When issue appears, it may sometimes but not always be resolved by parking, then restarting the vehicle. After the issue begins, there is an audible beep and an alert/warning flashes for less than a second within the instrument cluster. The audible beep and screen flashing occurs rapidly and repeatedly after appearing. This appears to be the same issue as NHTSA ID 11617668 Per my own research, other owners of this vehicle have had the same issue, as noted in this forum thread: [XXX] Additionally, the solution according to other owners of this vehicle is listed in Hyundai's TSB 23-BR-001H (listed in NHTSA ID 10235346 from April 7 2023 as MC-10235346-0001), which is listed at [XXX] . This TSB's document does include the 2022 Hyundai Ioniq Hybrid, though the NHTSA listing erroneously lists only the 2019-2021 models as being affected. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

EPB and auto hold lights come on intermittantly/randomly.

The EPB light appeared on the dash panel of the car on 7/13/2023, along with the EPB light, the cruise control, the auto hold function, and the electric parking brake stopped functioning. The light will disappear on a restart and reappear after a period of time. It is indeterministic when the light will reappear on the dashboard. I have tried to contact the nearest dealer in an attempt to get the car inspected for safety reasons, however, the dealer was unavailable and Hyundai national customer service was unable to help. Hyundai's national customer service representative was also being deceptive as they transferred me to a dealer that is 425 miles away from the location I told them while giving me the impression that they were transferring me to a local dealer. The car was eventually inspected by two different Hyundai dealers. The first dealer informed me that there was a short on the wire which caused the error. However, due to the fact I was moving at the time, I could not wait for them to fix the car at that moment. They stated the vehicle was safe to drive and that I could bring the car to the new dealer once I moved to the new location. When I brought the car to the new dealer, instead of the wiring error, they stated that the radar of the car had failed. Since then, they have performed repairs on the car and the error has not yet occurred. This is a significant concern of safety due to various reasons. First, the electric parking brake is an important component of the car, as in the event of a break failure, the electric parking brake is the only backup to ensure the car can be stopped before any catastrophic event. Furthermore, according to the dealer, the actual component that has failed is the radar. However, I do not recall, at any moment, the car has warned me that the radar has failed. This could cause any reasonable person to assume the radar is functioning properly and believe that the forward collision-avoidance assist is still active with no

Shortly after purchasing my Ioniq (roughly 2 months into ownership) my dashboard started beeping with warning signs for my EPB and auto-hold brake. I panicked and parked my car and tried to turn off the functions because I thought I had accidentally turned them on but they wouldn’t turn off. This would continue at random for roughly 7 more months until it would stay on for weeks at a time. I was told there was nothing the dealership could do about it and was asked about my oil changes. I get my oil changes within the intervals set for the vehicle and it does not seem to affect if the lights come on or off. They beep constantly and also the EPB and Auto-hold features do not work when the light comes on, the fail. It’s a safety risk as when I do try to engage them they don’t work and makes me fearful that they will short and work at random times which is a huge concern.

While driving, the adaptive cruise control will randomly become disabled and 3 lights pop on: EPB, Auto Hold, and check engine (triangle with ! In the middle). Check engine light will turn off if ACC is turned of entirely. Problem will persist as long as car is on. Once turned off and restarted it will stay off for a while and then come back on. Stays off longer when car has an overnight break but other times it will happen as soon as it's turned on. Cruise control will not work when this issue appears. Picture shows milage but that was May 31st 2023, not the 1st time back in November, 2022. It happened the 1st time after a drive from Lancaster, CA to Pheonix, AZ on the return (about half way)

On 12/25/21 less than 2 months after purchase, amber color warning lights came on dashboard saying "AUTO HOLD" and "EPB" light up on dash and a chime noise would sound when flashing message lit up. Since warning lights weren't red I understood the feature wasn't working, that it was safe to drive, but the chime was annoying when it came on about once a week. On 8/8/22 I took the car to Selma Hyundai and paid $168 to diagnose the intermittent flashing AUTO HOLD/EPB amber light alerts. They checked functions and said if persisted they would have to replace the left hand parking brake motor. On 9/8/22 I took the car again to Selma Hyundai as the problem persisted, After another diagnosis, they ordered a left rear caliper due to an open circuit. On 10/3/22 after waiting weeks for the ordered part to arrive, Selma Hyundai replaced the left rear brake caliper. On 12/20/22 I returned to Selma Hyundai for another diagnosis as the AUTO HOLD/EPB lights were again frequently alerting on the dashboard. Hyundai factory advised them to order and replace the left rear brake wiring harness. On 1/26/23 after waiting over a month for the part, Hyundai installed the new left rear wiring harness. I was now warned that the mechanic was now seeing codes from the right rear and if the alerts persist, they would have to order the right rear wiring harness. On 2/3/23 Friday evening, I was leaving my apartment with my mother to make a Costco run. Turned the car on and the AUTO HOLD/EPB lights were on and the emergency brake was flashing RED quickly on my dashboard. I turned the car off and back on with the same result. I tried to back out of my parking stall and could feel the car trying to roll back but the parking brake would not release. I tried to roll forward a bit and the parking brake would not release to let me roll. 2/6/23 Monday morning and Selma Hyundai told me to have car towed to them and they would order the right rear brake wiring harness. No wiring harness yet.

The regenerative brakes had an error go off, which caused the brakes to stop working properly. This error went off twice, once in my driveway upon starting my car, then it reset itself. And again while driving, in which I nearly rear ended the car in front of me due to the brakes not working. Hyundai confirmed the error codes but could not reproduce. Hyundai eventually replaced components of the brakes, but I do not trust that it won't happen again. I wanted out of my lease but they refused and made me drive it again, even though I'm terrified of it happening again.