2023 Hyundai Ioniq 5 Complaint Log

Battery will not stay charged, Car has to be jumped every time it's driven. Also sometimes the car turns off when it put in gear with a 12volt warning.

Unexpected and uncontrollable shaking of steering while driving at speeds over 40mph

ICCU failed post software update. Driving home and was suddenly alerted electrical vehicle systems were malfunctioning, and shortly following (1 or 2 minutes), the car flashed a new warning telling me to stop the vehicle. Had I been on a busy highway or a one lane street with low visibility, it would have put me and my wife in danger of being struck by other traffic. Luckily, I was very close to home so I drove home and did not drive the car for a few days. while researching what to do, I had read about the ICCU failure and my problems were similar. I called a tow truck to get it out to a dealer. When attempting to shift the card into drive or reverse, the car would not move. Dealer has determined that my ICCU is in fact bad and is currently in the shop being replaced. Unknown how long this will take.

My Hyundai IONIQ5 suddenly lost power while I was driving it. I was only able to go 20 mph for a short period of time before it completely died. I had to have it towed

12V battery died and vehicle not operable. Luckily vehicle was parked. This has recurred multiple times (3+) Issue has been confirmed by dealer. Not addressed yet. No warning lights of imminent problem

This car (and many other Hyundai Ioniq5's) has stopped with very little warning twice in the two years that I have owned it. The first time was on a two lane highway with no shoulder. when it stopped there was no way to warn cars coming from behind because there was electricity at all and therefore no emergency flashers. This particular car is six months too old for the Washington State Lemon Law to apply. So far it has been reprogrammed twice and had the ICCU component replaced twice. I really don't think this car, and other Ioniqs with the same problem, on the road.

My new 2023 IONIQ 5 became inoperable on 3 occasions when it completely lost power. This situation unquestionably impaired my safety on the first occurrence of power failure that happened without warning while I was driving; fortunately, I was able to coast to the side of the road without incident. In my repair visits to Hyundai dealers, the integrated charging control unit (ICCU) updated (twice) and the depleted 12-volt battery was charged. Repair visits resulted in loss of use of my car for a total of 31 days while it was in service. The 12-volt battery finally had to be replaced on the last dealer visit because it had could not hold a charge. The battery was barely a year old. No Hyundai dealer could assure me that the problem with the charging system was resolved. It was suggested that annual replacement of the 12-volt battery before the end of its normal lifespan might be required to avoid the serious safety risk of power failure while operating the vehicle. Hence, I am not driving my car with confidence that the safety risk risk was alleviated. I understand that Hyundai Motors acknowledged the ICCU problem and addressed it with a new ICCU in the 2025 Ioniq 5 model year. However, in my case, I have a still-new, expensive vehicle that I drive without feeling 100 percent secure that I am safe.

The contact owns a 2023 Hyundai Ioniq 5. The contact received notification of NHTSA Campaign Number: 24V204000 (Electrical System) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while his son was driving at an undisclosed speed, the vehicle stalled. The battery warning light was illuminated. The contact's son was unable to restart the vehicle. The vehicle was towed to the dealer; however, the vehicle had not been diagnosed. The dealer was made aware of the failure but confirmed that parts were not yet available. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 8,400. Parts distribution disconnect.

I was driving 45 miles per hour on a 2 lane highway, when the car suddenly started beeping, lurched, and dropped to 25 miles per hour (low power mode). After pulling over at a gas station, I was able to run the car in this low power mode for a short time, and then the 12V battery completely died. The main battery in the car was at 78%. There was no warning light that this would happen before making that drive. I took the car in to the dealer and they informed me that the ICCU failed. I see that there is an investigation underway for the 2022 Ioniq 5, and that the 2023 Ioniq 5 has the same components. Please take this investigation seriously as if I were going on a faster highway or more cars were around, it could have resulted in a major accident. This car has just over 10,000 miles and was just purchased under a year prior at the time.

I attempted to drive my car to work. The car started but would not shift into gear. A red battery light indicator was on in the lower left corner of the screen. I contacted my dealer and they asked me to jump my car and bring it in. I did that. They indicated that my car had experienced ICCU failure and that a part would need to be ordered. The car had already been updated to address the ICCU failure, or so I thought. This is a known issue with 2022 models.

The vehicle made a loud popping noise and lost motive power. Dashboard lit up with battery symbol and said to check electric vehicle system. Dealer service is certain it is an ICCU failure. The vehicle had the software update to “fix” the ICCU issue thousands of miles ago.

Electrical system warning lights came on and loud alarm indicating the need to stop the vehicle immediately. Diagnosed by mechanic as ICCU failure and associated 12V battery issues—so, typical Ioniq5 problems. Just lucky I wasn’t driving on the highway.

12v battery died this morning. The car main battery had 77% state of charge and still the 12v failed. The main battery is supposed to charge 12v as long as it is above 20% state of charge. This seems to be a wide spread problem and Hyundai is not taking any pro active steps in resolving this. All recommended TSB (Technical Service Bulletin) has been applied on the car and car was serviced last week and passed the multipoint inspection.

First indication something was going awry was when attempting to charge the car. Heard normal click indicating charge had started, but no audible announcement that charging had started. Car started throwing "Check electrical system," then power plummeted and became unresponsive to accelerator, followed by "Stop car. Check electrical system," then finally something like, "Battery is being discharged by external devices."** Car had to be towed about 60 miles to nearest Hyundai EV service center. Eight days later, I got a call from service saying that the ICCU needs to be replaced. They will update me once ETA of part is known.

The car loses power, slows down dramatically, and will not respond to the accelerator pedal. This failure has happened twice. The first time I was driving at about 40MPH on a side street when the car started slowing down with no warning and limped along at about 20MPH. I could not get it to move faster so I put my flashers on and made my way to the side of the street, pulled off of the road and shut the car off. When I restarted the car it drove normally. I reported the failure to Hyundai and they had never heard of this happening. They kept the car for 2 days and couldn't replicate the problem. That was about 2 months ago. Yesterday, 3/4/24, I was on the freeway going about 74MPH using the smart cruise control. I had just changed lanes when the car lost power and I got the message, "Smart cruise conditions not met." My speed dropped to the low 40's as other cars were whipping past me. Even though I floored the accelerator I got no response. I started the flashers, made my way to the right lane and got off on an exit ramp. I pulled off to the side of the ramp, parked the car and turned it off. Once again, when I restarted the car it performed normally. This is very dangerous! I could have easily been rear ended by another, faster car on the freeway since I slowed down so quickly without braking lights lighting. I brought it back to the dealer again today and they have kept it to run diagnostics. I don't expect that they will find any problem this time either.

3 issues: 1. 2 x, driving over a hundred miles the sensors get faults. None of the sensors work. Does not detect other cars. They updated my firmware, wiping the faults. 2. Once stopped at stop light, the sensors can start detecting items not there. 3. When parking the car does not detect items that are there. (I have video, dealerships so far refuses to fix) I am still trying to get them to fix it. Additional concern, talking to other drivers, they have similar issues and responses from the Hyundai dealerships. This is for both the Ioniq 5 and 6. Pictures: shows no other car image, or sensor detection. I took the picture a behind to give context. I can provide the videos if needed. Answers to question, separated with a comma: Yes, answered above, trying to get confirmed, the car has been inspected by Hyundai service center, and the errors were wiped by a update + reset.

Car bounce if at 62 MPH had dealership check balance and rear two tires could not balance. Dealership de-rimmed tires and found the inner foam has fallen or detached from the inside of tire causing. Resulting in foam moving around inside tire throwing g off balance.

12 volt battery keeps dying. I have had the car for 2.3 years and am now on my 4th 12 volt battery.

Vehicle was taken to dealer for recall repair. Upon completion i made sure everything was good to go. And realized the navigation system was not updating. Service agent took it back and was advise it needed a 4 hour update. Car stayed overnight. Following day they informed me they couldn’t find the problem and were in contact with tech support. They were advice to just replace the navigation antenna. Dealer has place the order for the antenna. My only problem is while we wait for the antenna my car’s location is at a random place so if it where to be taken there wouldn’t be a way for me to know the location of it.

The navigation system in this car has an additional feature which is always enabled even if a destination is not programmed into the nav system which is supposed to warn drivers if they are going the wrong way on a highway. Intermittently the system erroneously indicates that the driver is going the wrong way. A voice warning is repeated issued and a warning symbol is displayed on the instrument panel. It is shocking, very distracting and frightening at first. Then it becomes a driver irritation, and eventually the driver tries to ignore the constant warnings, completely defeating the purpose of the safety feature. I’ve seen on the Ioniq forums where other drivers have reported this intermittent problem. Our local dealer would not check our car because the nav system was not failing at the time we brought it in. The problem can last for 5 minutes and then stop or can last for a duration of a car trip. For drivers unaware of this problem, they could easily be frightened enough to cause unsafe driving.

The contact owns a 2023 Hyundai Ioniq 5. The contact stated that while driving at an undisclosed speed, a Jeep veered into the driver’s path, and the Forward Collision Avoidance: Automatic Emergency Braking system failed to activate as designed. There were no warning lights illuminated. The vehicle was taken to the local dealer, who determined the vehicle was working as designed. The vehicle was not diagnosed or repaired. The vehicle was taken to another local dealer, Feldman Hyundai of New Hudson (30492 Lyon Center Dr., New Hudson, MI 48165), who stated the vehicle was working as intended. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 15,000.

I heard a pop from the rear of the car and warnings came up on the dash. The vehicle was power limited and needed to be towed to the dealer. It was diagnosed as an ICCU failure and blown fuse. This was the problem supposedly addressed in Hyundai TSB 997 (NHTSA ID Number: 10240086). That service was performed on the vehicle in September 2023. We were lucky the incident occurred on a city street and not on a freeway or rural highway where the sudden loss of power could have been very dangerous. The software fix applied under Hyundai’s TSB clearly did not fix the issue.

The ICCU has failed after the recall repair was completed in September 2023. When the fuse pops the car indicates a check electric vehicle system message in the driver information screen.

both the 12v battery and the ICCU failed while driving. The dashboard light gave us 1 minute to pull over before the battery system died and the car stopped fully dead. Needing towing to dealership service.

I was driving at night on a freeway marked as a 65mph speed limit. I had the adaptive cruise control turned on and set to automatically follow the road speed limit. There was intermittent rain at the time. Suddenly my car began to accelerate, but I was able to stop the acceleration by stepping on the brake to disengage cruise control. I tried re-engaging cruise control and it immediately accelerated strongly again. That is when I noticed the cruise control speed had been set to 85mph. I disengaged cruise control for the rest of my trip home and was able to drive normally. Subsequently I learned that the car detects speed limits by both map data and visually recognizing speed limit signs, so I assume it mis-identified a 65mph sign as 85mph. The auto speed feature set the cruise control speed to 85mph even though that is much higher than any possible speed limit in California. I disabled the auto speed feature of the adaptive cruise control and have not had any problem since then.

Sound deadening foam inside the tire delaminates and causes SEVERE wheel imbalance. This is a widespread issue on all the Hyundai Ioniq 5 forums with this tire. Mine cost me $300 and countless hours to diagnose. IT also severely impacted the cars handling and prevented the car from driving over 46mph (in my case), which is extremely dangerous on interstates. My local tire shop balanced the tires with the maximum allowed amount of weights, but then the vibration was still there at 59mph. The Hyundai dealer then diagnosed it and they charged me $180 to do a dynamic balance. According to their results, the tires were "bad" and needed to be replaced. I went to Costco to replace the tires at a cost of

The contact owns a 2023 Hyundai Ioniq 5. The contact stated while driving 45 MPH, the message "Electrical System Failure - Please Stop the Vehicle" was displayed and the vehicle unintendedly decelerated and failed to exceed 25 MPH. The contact pulled into a parking lot and the vehicle was towed to a dealer where the vehicle was diagnosed, and the contact was informed that the Integrated Charging Control Unit (ICCU) had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 53,131.

I was waiting to charge up my EV when the dashboard started lighting up red. Stating to turn off vehicle due to battery failure and safety. And then all of the sudden the car just turned off. And would not come back on. So my husband had to go rent a vehicle at Avis so we wouldn’t be stranded so far from home. And to continue to go to work. So after 30 minutes my husband suggested that I try and restart the car and it did come on. We were stuck in the freezing elements due to the battery failure. Which seems to be an issue that they had back in 2022. That wasn’t correct or thought to have been. After I did some research yesterday 1/24/24. I called and made the local dealership aware of what I discovered that I took my car to. Because they couldn’t see if they would get same issue but they stated they didn’t.Also called into road side assistance on the day of the incident to have the car towed. But canceled after the vehicle started back up after 30 minutes with no response.

Driving on the freeway at approximately 70 mph, the car lost the ability to accelerate and started to lose speed. I had my foot on the gas but the speed was dropping. There were no warning lights, messages, or other alerts prior to the loss of acceleration. The screen remained on during the loss of acceleration but a phone call was lost. Safety at risk for obvious reasons. I was able to put hazards on and move to the left-hand shoulder. I turned the car off and on again and was able to speed up again to merge onto the freeway. For the remainder of the drive (approx 25 min), everything was fine. We have not taken the car in yet for inspection. The car charge was over 50%. I had driven the car on the freeway with no issues for an hour earlier in the morning, for 15 min in the city, and then for another 25 minutes on the freeway prior to the incident.

The Ioniq 5 has a serious problem with 12 volt battery drain. Three times, I have returned from vacation and found that the 12 v battery was completely dead. This is a huge issue if a consumer cannot rely on their vehicle to start in an emergency. I called a dealer in Renton, Washington about the issue and the technician responded, "This is a common issue in these types of vehicles." I am sorry, but that is not acceptable and is a vehicle defect. With electronic doors, you cannot get into the vehicle to jump start it, if the vehicle is locked, unless you can pull the manual key from the key fob and open it with the key. 12 v battery drain is killing the lifespan of the battery. Looking on the internet, other owners are complaining of the same issue. My vehicle sat for one week two times in December and I just returned form a two week vacation to find the battery completely dead. I only have 4484 miles on the vehicle and it is a 2023 car, so it is not an old battery. The car has a serious electrical defect.

When parking in a supermarket parking lot I slowly approached the space while braking. As I turned left into the space and released the brake pedal to allow the car to slowly roll into the space as I always do, the car surged as if someone floored the accelerator. I veered left to avoid a head on collision with the parked car facing me and went diagonally between the right front fender of that car and the left front fender of the car parked in the space to my left. I sideswiped both sides of my car and damaged the front fenders of both cars before I was able to apply the brake and bring the car to a stop. There was a mother with her two young children loading groceries into the car in front of me. Fortunately I avoided hitting anyone, but the witnessed the accident. I was in shock. My car suffered $25 in damages. There is absolutely no way I accidentally applied the accelerator, and if I had I would never have floored it! The car malfunctioned. I reported this incident to Hyundai also. They supposedly were sending someone to inspect the car at the auto body repair center.

Driver was moving forward into a space in a parking garage between two other vehicles. Driver had pulled most of the way in and was slowly inching forward. As the car came to a stop, it suddenly lurched forward, hitting a concrete wall. The collision warning system did not alert, and auto-braking did not occur. The car was in Regen Level 3, and Auto Hold was not activated. In the months prior to this, the car twice had a similar situation when coming to a stop at an intersection with foot on the brake, then suddenly lurched forward, nearly rear-ending a car in front. There was no visible damage to the concrete wall, and a police report was not made. Hyundai says they want to inspect vehicle, but have not done so after a month. It is easy to believe that this was driver error, but it absolutely was not. Car lunged forward and accelerated into a wall with only the brake being applied. All of these events have occurred after the Hyundai Ioniq 5 software update was applied on 26 Sep 2023.

12/30/2023 at approximately 5:30pm I drove home with the iPedal engaged. The iPedal was installed as a download to the car in August 2023. My daughter was in the passenger seat. I began to back into my driveway but shifted to Drive to straighten out the car. The car began to roll forward I took my foot off the accelerator but the car did not stop in spite of the iPedal being engaged. I put my foot on the BRAKE PEDAL which went all the way to the floor to no avail. The car rolled slowly into an electrical pole which brought the car to a stop. Neither iPedal nor the foot brake pedal had any effect on the car. I then put the car in reverse and backed the car into my driveway and the brakes worked as expected. When I then attempted to charge the vehicle, the charging port would not open. I could hear the motor working to open but it would not open. On 1/11/2024, I again attempted to open the charging port and this time it did open. So, TWO different electrical (including the brakes and the charging port) were not working properly. Inasmuch as the charging port again worked and the brakes again worked, there clearly was a malfunction that was random and unpredictable and also nearly impossible to reproduce but if this happened once, it could happen again. The brakes failed. Had we been traveling on a busy road, or at the top of a hill, we would have faced significant bodily harm, death to ourselves or others. This car had been driven locally, predominantly on local roads. The car is available for inspection and has only been driven on the dealer lot since the the incident. There were no warning lights or messages to indicate that any issues existed. The manufacturer has executed an inspected but has not reproduced the problem. The manufacturer and dealership claims the car is safe to drive without addressing the brake failure. I do not believe the car is safe to drive without a determination of how the bake failure happened or without a repair to that issue.

12/30/2023 at approximately 5:30pm I drove home with the iPedal engaged. The iPedal was installed as a download to the car in August 2023. My daughter was in the passenger seat. I began to back into my driveway but shifted to Drive to straighten out the car. The car began to roll forward I took my foot off the accelerator but the car did not stop in spite of the iPedal being engaged. I put my foot on the BRAKE PEDAL which went all the way to the floor to no avail. The car rolled slowly into an electrical pole which brought the car to a stop. I previously filed a complaint here but I have since learned that iPedal may disengage if the car is put into reverse. There is not warning light to alert the driver that iPedal is disengaged so the driver is not aware that the brakes may not work as expected. I believe this may have been the case with my accident. However, this does not address why using the foot pedal for the brakes did not stop the car. Have found many complaints about this on various forums and believe this aspect of iPedal needs to be addressed. It should not disengage unless the driver instructs the car to do so. I have not been able to find documentation of this functionality in the manual, but I have searched and will continue to do so.

Driving the vehicle on the highway for longer than 60 miles at highway speeds the vehicle goes into “power limited” mode and a turtle pops up on the screen. You are unable to accelerate the car and once this happens you have to leave the car off for at least 5 minutes and then not drive above 65mph again or it will keep happening over and over. After taking it to the shop Hyundai Corporate said we need to drive the car again to see if they had fixed it. Approximately 65 miles into the trip it happened again and this time I was almost rear ended and cars were swerving around me on the shoulder to avoid crashing into me. Hyundai is saying that they cannot reproduce the issue but they are not driving the car on the highway for more than 60 miles. The safety of not only myself and my family is at risk as well as other people on the highway behind and next to us. The vehicle is currently at the dealership and they said there are no error codes so they don’t know what’s wrong. The only warning that popped up said “power limited” with a turtle.

Suspension came through the top of casing hitting the hood after going over a minor pothole.

The car proceeds by itself and does not stop even when brakes are engaged. This happened 2 times. Once in reverse and once forward, both caused severe damages to the car. In the forward incident, the driver was wearing seat belt but air bags deployed with impact.

This model has known issue. As I found after it occurred to my brand new IONIQ 5 . It has only 320mi. It had 87% battery and all of sudden it stop on road. No power on dashboard. After taking to service station they found “ "Inspected and found code P1A9096- DC/ DC converter input voltage sensor fail. Referenced campaign 997 for concern. With code present, per TSB, replace ICCU and fuse." This same issue I noticed in 2022 after reading forum. After putting my car in service station still I don’t have my car. It’s almost 17 days. If this car had recall I could have saved my time and unnecessary effort. Plus thank god it was local city read( school zone) if I was in highway and same thing happen to me it might be life threatening situations.

The following is an incident that happened yesterday to my wife, who is an experienced driver: Whilst driving south on I5 from Seatac toward Tacoma in heavy rain with surface spray the screen above the steering wheel mentioned collision avoidance was not working and radar was not working. When I applied the brakes to slow down no response from the brakes. I then let off the brake and tried several times to apply the brakes each time with no success. I still had full control of the steering and could still steer the car. This lasted for about 30s then the brakes started working again. The error messages regarding collision avoidance and radar not working would continue to pop up even after the brakes were working. After stopping the car and turning it off and restarting several hours later the car no longer displayed any error messages. No vehicle or passenger were hurt in this incident, however if the traffic had slowed or stopped this outcome could have been very different.

The car does not switch from Reverse to Drive under certain conditions, resulting in uncommanded reverse motion. Gear selection on the Ioniq 5 is controlled by a twisting knob at the end of a stalk on the steering column. Drive is selected by turning upwards, Reverse by turning downwards. The moving part springs back into the neutral position once a gear is selected. Occasionally the car does not switch from Reverse to Drive. This is extremely dangerous as the vehicle shoots backwards when the driver is expecting it to move forward. A driver will likely press the accelerator more firmly after having physically moved the gear selector to Drive and expecting the vehicle to move forward. Since this happens after backing up, it is likely that obstacles or persons are behind the car when this happens, and absent a very fast reaction by the driver this will result in accidents and injuries. The issue is triggered when the car is not at a complete standstill when Drive is selected. Even barely noticeable residual backward motion triggers it. There is no haptic feedback to alert the driver that the car ignored the driver input. As drivers are expected to pay attention to their surroundings when maneuvering, visual feedback (via the gear indicator on the stalk and possibly a dashboard notification) is not useful. There is a small auditory cue, but it is easily missed when in a conversation or listening to music, especially because the car frequently dings, pings, and beeps for other reasons. Not to mention, hearing-impaired drivers will also miss this. The driver should not be able to physically move the gear selector into the Drive position when the car is not accepting that input - the twisty bit should be locked out to prevent this. Or at the very least, if a crucial driver input is discarded, the car should instead default to a safe behavior, i.e. put the car in Neutral instead of Reverse.

Stop vehicle and check battery supply error and the car died. No power whatsoever. Likely linked with the faulty ICCU issue.

The car driving selector order is Drive, Neutral, Reverse which is the wrong order. It should be Reverse, Neutral, Drive, which is the same for all the cars I have driven since the late 1960's. In fact, the Hyundai Santa Fe has the correct order. Also, my Volvo XC60 has the correct order. I thought that your standard 571.102 addressed this problem. I am having the same problem selecting the wrong drive when I go from my Volvo to the Ioniq 5.

I started getting the error Electric Vehicle System error in my month old Ioniq 5. After driving a few miles, the air conditioning stopped working completely. And after a few more miles, the vehicle started to throttle down the speed to 20-25mph that too on the I95 with a 65mph speed limit. Had to turn on the emergency lights and drive slowly till I reached my destination. After googling for a while, I found that this issue is related to the ICCU failure that is pretty common in the Ioniq 5 and Hyundai is yet to issue a permanent fix for this problem. I don’t know why we are allowing the sale of these vehicles with known issues. You can even Reddit the ICCU issue.

See uploaded photos and document.

When driving my new Hyundai ionic 5, the dashboard display is set up such that when I am in my preferred seating position, and my hands at 10 and 2 on the steering wheel, I cannot see the spedometer reading. I basically don't know how fast I'm going and less I change my hand position or move my head. This requires a fair more amount of time for me to take my attention off the road. This is not an isolated incident. I have asked my friends, who range in height from 5'2 to 6 ft 3 to do the same thing. They all report the same problem when they are in their preferred seating position. I am also noted many complaints about the same issue on the ionic 5 internet boards. This problem is caused solely by Hyundai's choice of a main display layout. This is the way it is laid out from the factory, and there is no way to change the speedometer position on the main display as a user.

Driving on freeway when adaptive cruise control turns off and had a sudden complete loss of acceleration, we had steering and brakes only. Sudden reduction of car speed in traffic could cause accident. Has only happened once in 20k miles. (no acceleration) Adaptive cruise control shuts off for no reason, but dealer couldn't replicate. In recent 8k trip we photographed warning on dash 17 + times after shut down. Dealer couldn't find any saved trouble codes for this. No warnings prior to any occurrence only after, dash turned off on acceleration loss.

HELP! I now regret that I bought a Hyundai Ioniq 5. I hoped the recent campaign would fix my problem, but I think it is now worse. While driving my speed drops 3 to 4 miles per hour, then the car lurches forward to regain my speed. At first I thought it was when using cruise. Now the car does it on the highway even when not using cruise. When it starts dropping the speed, the accelerator is not responsive. I have to wait for the car to slow completely down before the throttle will respond. I do not notice the problem around town. It seems to cruise fine for about 50 miles and then begin to slow and speed up out of my control. I think it is a safety hazard. It certainly drives me and my passengers crazy. PLEASE DO SOMETHING!!!

9/11 Saturday lease deal agreed 9/13 car picked up 9/23 Air conditioning stopped working and car throws a warning message requesting immediate service. 9/25 Parts required to fix the problem not available in the US or Canadian Hyundai Parts inventory and dealer does not know when they will get the parts. 10/3 Dealer advises no update on parts. Hyundai Customer Care notified today and is investigating. From what I can determine, this is the dreaded ICCU issue which plagued the 2022 Ioniq 5.

Intermittent Electrical / Brake failure . Put vehicle in reverse . Brakes failed to stop vehicle . Vehicle has had electrical issues before . Waring lights came on for steering and tire pressure in the past . Recall then came from Hyundai for the ICCU .45 minutes before the collision, the front collision warning came on when I was stopped at an intersection with no one in front of me . I stopped the vehicle and turned the vehicle off . Turned on the vehicle and it reset the warning lights and sounds , and I continued to drive . Later while pulling out of a parking space in reverse ,I stepped on the brakes but the vehicle did not stop . I pumped the brakes to no avail . After the collision , the brakes worked again when the tow truck driver placed the vehicle on the flatbed .The Hyundai dealer , after the vehicle had been in their possession for several weeks with the battery disconnected, said there was no problem They also had a factory rep look at the vehicle and he made a report . We have not been able to get a copy of the report . Vehicle is still at the dealership . When notified by the factory rep of their claim that the vehicle had no problems , the vehicle had been out of service more then 30 days .

Car: 4 month old 2023 Ioniq 5, Starting on September 12, 2023 my car would not take any charge AT ALL, effectively make my car useless as I am down to 10 miles of range. For the next several days I tried multiple chargers at different locations trying both 350 kW and 7kW chargers. Other cars were able to charge their cars immediately after I moved from the charger. I have read that the software update I am going to get will reduce my charging capacity rate to fully charge slower. This car is not performing at the stats I chose it for. I will not be able to use this car if it cannot take fast charge for a full charge. I was not made aware of this issue that was well known to Hyundai (they have been dealing with this issue with its earlier Ioniq models) before going forward with this car. Nor would I have decided on this car if this issue was known to me.