2023 Hyundai Elantra Hybrid

Since 2/2/24 13 episodes of all safety features failing including blind spot monitor, lane keep assist, forward collision warning, and others. Last occurrence on 8-8-24. On one occasion the car failed to accelerate in the middle of an intersection, the car did move slowly and operation returned to normal after turning off the car and pressing the 12V reset button. Diagnostic codes found on car APP include both C164286 and C164202 for all 13 episodes. Despite being told this code is "for the speed sensor because it saw a voltage drop from the battery system" the dealer claims there is nothing they can do because they can't recreate the problem. This is highly dangerous to my family and others as the safety features can prevent accidents. The most concerning is the car suddenly losing acceleration as this could potential happen where there is no safe way to get off the road in time prior to an accident. This loss of acceleration has been reported by many other people on the Facebook group I am a part of called Hyundai Elantra Hybrid Owners. The loss of safety features occurred after all recalls were performed as of 8-8-24

1. What component or system failed or malfunctioned, and is it available for inspection upon request? Ans: The Forward Collision Warning didn't detect any vehicle ahead of me at the time of collision which caused the crash. 2. How was your safety or the safety of others put at risk? Ans: Me and my co passenger were luckily not injured but got almost killed during the collision. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? Ans: The dealership or the Hyundai Motor America couldn't replicate this issue. They didn't answer the question to why the detection didnt happen during the crash and why my Automatic Emergency Braking failed. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Ans: Yes, Hyundai Motor America had a 3rd party company named Bosch inspect the vehicle to check for any fault during the time of cash. 5. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Ans: No there was no warning signs displayed during the time of collision and no signs after the collision as well. Funny part after the collision my front bumper came off, my headlights broke, and many other components were damaged like my air conditioning and my seat heater and stuff but none of those issues showed in my blue link report(a report that shows any signs of warnings or crash detection's) that came to me the next business day in my email from Hyundai.

My car has done 4 false automatic emergency braking incidents while I was on the freeway (all times). There was no vehicle in front of me or the sides and my car started applying emergency brakes with a message pop up on the digital dashboard. Looks like the system is falsely detecting there is a car in close proximity. When this happened, I noticed the back car hit the brakes and immediately switch lanes. The sudden brake could cause a collision. The car allows me to take control after a couple seconds but when the warning appears I can not. I have not reproduced or verified the case with a dealer but the instant has happen 3 times in the past month. It has not been inspected by any other parties.

Driving on a highway at 80mph, adaptive cruise control was engaged. It was a clear, sunny day, around 55 degrees F outside. We were 3.5 hours into a 4 hour drive. There were no cars in front of the vehicle. There were other cars in the lanes immediately to both the left and right of us, as well as a car behind us. The car gave a warning for Automatic Emergency Braking, although there was nothing to avoid. No vehicles were merging into us, no one was going to rear end us, and nothing was in front of us in or near our lane. The car then started braking automatically and attempting to swerve/turn automatically. I had to fight the automatic system to stay in our lane and not crash into the vehicles immediately to the left and right. This was extremely dangerous at highway speeds.

On December 24 2023, the vehicle's forward collision warning failed. My son has a learner's permit. He was driving the car under my supervision. He pulled into a parking lot and hit a light post. We did not receive a warning, nor did the automobile automatically apply the brakes to avert the collision. There were no injuries. There was no property damage, except for our vehicle. I did not notify the police. In retrospect, we never hear alarms or warning when pulling into our narrow garage. Our other vehicles with the same safety feature do offer an alert in that context. I think the forward collision warning system is defective on this Hyundai Elantra. I have filed an insurance claim and notified the dealership by email. Next steps are pending after we hear back from our auto insurance claims adjuster.

The contact owns a 2023 Hyundai Elantra. The contact stated while driving approximately 65 MPH, the Forward Collision Avoidance: Automatic Emergency Braking brake light illuminated, and the vehicle experienced phantom braking, causing the tires to skid and the speed to be abruptly reduced. Moments later, the Forward Collision Avoidance: Automatic Emergency Braking light turned off and the vehicle operated normally. The cause of the failure was not yet determined. The manufacturer and local dealer were notified of the failure, but no assistance was provided. The failure mileage was 750.

The contact owns a 2023 Hyundai Elantra. The contact stated that while driving at highway speeds, the Forward Collision Avoidance: Automatic Emergency Braking brake light illuminated, and the vehicle experienced phantom braking, causing the tires to skid and the speed to abruptly decelerate. Moments later the Forward Collision Avoidance: Automatic Emergency Braking light turned off, and the vehicle operated normally. The failure had occurred on several occasions. Additionally, the vehicle had experienced unintended acceleration, causing the vehicle to lurch forward. The vehicle was taken to the local dealer who was unable to determine the cause of the failure. The vehicle was not repaired. The manufacturer was notified of failure. The failure mileage was 1,500.

While driving down an interstate at approximately 58 miles per hour, I turned on the cruise control and went to adjust it to 65 miles per hour. The car rapidly accelerated and it appeared on the dash that the cruise control defaulted to 110 miles per hour, which appears to be the maximum on the system. I tried to turn the speed down, but the cruise control would not go below 110 miles per hour. I immediately deactivated cruise control and continued to drive at normal speed. I tried multiple times thereafter to set cruise control, and it would again, rapidly try to accelerate the car to 110 miles per hour and would not let me decrease the speed. After stopping at a rest stop, turning the car off and on and driving again, it appeared the glitch was fixed and I was able to operate the cruise control normally. Please note that the "adaptive" part of the cruise control, including steering assist/lane departure worked fine the entire time.

Have experienced at least half a dozen instances of unprompted initiation of the automatic emergency braking system within having the car for about 3 months. Would say that this system is malfunctioning. Automatic emergency braking occurred for seemingly no reason in all instances while travelling on the highway at approximately 70 miles per hour. There were no vehicles in front of the car and no vehicles switching lanes in front of the car. However, there were vehicles behind the car and in other lanes adjacent to the car but behind the car. The unprompted braking is dangerous for the cars behind and could cause a rear end collision where the car behind the drivers car would not register such excessive braking due to the lack of action prompting the automatic emergency braking. Additionally, this can cause driver loss of control due to the extreme response. Problem has not been able to be confirmed by dealer or independent service center. No messages prior just the indicator on the dash identifying the engagement of the automatic emergency braking.