Warnings problems of the 2021 Hyundai Elantra

Forward sensors in vehicle have been failing while driving rain or snow since 2021; would go way on its own. Most recent failure has occurred with no debris or obstruction to sensor on a clear and sunny day. The sensor failure has been stagnant and will not go away, increasing a safety concerns while driving.

Front sensor problem. Sensor check forward safety system. Abs, auto hold light came up out of no where. No damage to sensor.

Several times, including yesterday, my forward collision avoidance engaged by braking suddenly and strongly and inappropriately, almost causing me to be rear-ended. I was nowhere near the car in front of me, and fortunately due to traffic was traveling below the speed limit. This seems to happen whenever there is an overpass above the road. I have reported this to Hyundai, and they don't seem very concerned. Very dangerous. I would think there could be a software or sensor update that can correct this situation.

High beam assist, check rear cross-traffic safety system, check blind-spot safety system, check forward safety system, check lane keep assist system, traction control disabled. All of those messages came on while driving. Rear backup camera quit working, reverse lights do not engage. No remedy for recall still. Vehicle is unsafe to operate without recall being fixed. This is my only transportation, fix it!!!.

At around 93k miles my hecu unit apparently malfunctioned at the same time as the left front tire speed indicator. All of my safety features abs, adaptive cruise control, lane departure, lane keeping etc do not work because of this.

I was driving on the highway at the posted speed limit when the warning "check forward safety system" came up and remained on my dashboard. The cruise control stopped working also. The light remained on even after stopping and starting the car and has remained on ever since. I have never been in an accident nor has my computer system reported any collision. My Hyundai blue link app gives me the following dtc: c162078. It started on 2/7/2024. My collision detection system does not appear to be working at all and my cruise control no longer works. I'm very concerned about it malfunctioning based on other entries on the NHTSA. Gov website. I took the car to Hyundai service center and they are trying to convince me this is due to a collision and warranty will not be covering it. They tried to charge me for diagnostic even though I already had the error code on the Hyundai bluelink app. They confirmed that my computer has zero reports of any collisions. The service tech said, and I'm quoting, "the system is very sensitive and a swift kick could cause it to malfunction. " that sounds like a manufacturing defect to me. I have never been in an accident with this car, there is zero visible damage to the front bumper, and my computer has no report of an accident. The dealership urged me to contact insurance. My major insurance company told me this was absurd, would never be approved, and is clearly mechanical. They also mentioned anecdotally that this problem has been coming up a lot for them with modern Hyundai models. Then I called Hyundai corporate and they have escalated the issue, agree it sounds mechanical, and will be contacting me in 3-5 business days. They apologized profusely so I am still holding out hope for warranty coverage. I believe the dealership is trying to blame me for this mechanical failure to avoid expense on their end. I have had many software-related issues with this car.

One day I was on the highway driving and the front collusion safety warning appeared. I thought the warning went off because the sensor was dirty due to dead bugs. However, I pulled over and the sensor did not appear dirty. After awhile the sensor went off on its own. Then a few weeks late the front collusion safety warning appeared again while I was driving on the highway. The warning has not fixed itself. I cannot use my cruise control. I took it to the Hyundai dealership and they told the me senor is off alignment and it will cost $500 to repair because they have to remove the entire bumper. I have seen on Hyundai forums this is a common problem.

Forward collision warning system continues to engage dangerously and inappropriately, almost causing me to be hit from behind, as I always leave plenty of room in front. This is very scary and very dangerous. Software updates have not remedied the situation. Hyundai motors seems completely uninterested.

On three occasions while turning out into an intersection my steering wheel will lock up and my forward collision warning system will engage and my just stop in the road. Out of those three times, my car has been towed to the dealership twice. The dealer has been working very hard to identify the issue while working with Hyundai tech services. They have poured countless hours and money into this car and still have not been able to identify and correct it. My vehicle has become a deathtrap waiting to happen.

I was traveling in the rain and a check forward safety system warning appeared on my dashboard. There was nothing in front of me to set that off. I notified the dealership and they said it was an alignment code and must have gotten hit. ( which I doubt) so wasn't covered under warranty.

My father was involved in a car crash, front end into a wall. Apparently, the front end collison warning did not sound and the auto braking system never engaged. Prior to the accident, the front end collsion warning would come on intermittently, but the dealer checked it out and stated it was working normally (san bruno Hyundai). After the collision repair, the warning light comes on and the car has been at bakersfield Hyundai now for over a week, but they can't find anything wrong with the warning system, but the system does not function (no warning of collision and auto braking does not engage). Our accident total was $10,000, lucky, no one was seriously injured.

Driving on highway, dashboard reported "check forward safety system" and "check Smart cruise control system". The car then disabled both while I was driving. This has happened 6 times to me. The first time I brought it to dealer and they stated it was a calibration problem. They reset it and I had no problems for a while. The problem has occurred 5 times more and will stay on for about a week or so and then just go away. It works again and then occurs again. So, it is intermittent and recurring. Each time the diagnostic code reported by the software to my phone is c162078. I see the 2018 kona had the same exact problem and a software update TSB was put out there. . Read more...

Check forward safety system message. Smart cruise disabled.

A warning light frequently activate to demonstrate malfunction of the driver forward collision avoidance safety features. This was presented to the dealer for warranty repair. The same defect persists despite their intervention.

Forward collision system continually fails. This disables the vehicles cruise control. The vehicle has been in the shop multiple times with no resolution.

I went to start the car up and all of the warnings attached popped up, along with losing my power steering. This is the second time it has happened in less then a year.

Twice now when starting the car all the driver safety systems will show a warning that they are not working and the message is that the car is not save to drive. A bunch of warning signs will go off and the wheel locks. The brake system has also locked up. I captured it on video, but it won’t let me upload it here.

In the middle of crossing the verrazzano narrows bridge in new york city, the forward collision warning came on and the braking system automatically engaged repeatedly. I was traveling about 30 mph and had about 4 car lengths between my car and the one in front. The system kept engaging no matter how much room I put between myself and the car in front of me, and as I was in the middle lane of a bridge in heavy traffic I could not pull over. I always keep a good distance in front when driving, but because of the system inappropriately engaging I almost got rear-ended about four times. I was terrified and this continued to happen until I got off the bridge. I use my car mainly on the weekend, and also travel this bridge almost every weekend and this was the first time this happened but it was terrifying and extremely dangerous!!!!.