Adaptive Cruise Control problems of the 2021 Hyundai Elantra

Radar equipped to front of vehicle has malfunctioned, disabling all forward safety systems and adaptive cruise control. Without this equipment functioning, cruise control is completely disabled and the vehicle will not automatically brake or provide forward warnings. The vehicle component has not been inspected, but this is a recurring issue amongst other owners of this model. There is a warning lamp that turns out that states "check forward safety system".

My car has two warning lights on my dashboard. First one is check foward safety system. Second one is check Smart cruise control system. Both of them turned on when I was driving in the middle of a highway. These warning lights activated out of the blue, without any unusual circumstances. I cannot use my Smart cruise control system and the car is not able to alert me about forward collision. This issue has already been addressed through a recall for my vehicle's model and year in korea. My vehicle was produced in korea and was imported to the united states; however, Hyundai has not issued a recall regarding the same problem in the united states. This is a safety concern, and Hyundai should repair it free of charge, and the company should compensate customers who have already undergone repairs for the repair costs.

Pop up display "check forward safety system and check Smart cruise control system" during driving on the free way with no reason. 3 month ago same thing happened. Fixed that problem with re-calibration to the front sensor. But. Same problem happen today. This problem is recalled in south korea on last year.

Forward collision sensor suddenly failed to function properly. This issue was not caused by any damage or a collision; it happened while driving on the highway. Hyundai does not fix this under any warranty, even though the issue was not caused by damage. It appears to be a bad quality/faulty sensor.

Vehicle only has 14k miles and is showing an error message for "check forward safety system" and "check Smart cruise control system" after some research found this is a very common issue with multiple Elantra's where the front radar goes bad causing safety systems such as automatic braking/acceleration, and cruise control to not work. This is a big safety issue that has been reported by many drivers. The error happened going a steady 40mph with no other cars around on an open road. Nothing was hit the radar just suddenly failed.

When driving at 55mph with cruise control on, the car suddenly accelerated to 75mph, this happened on the open road and was able to keep under control. Auto has less than 10,000 miles. I will be contacting Hyundai customer service for a case number on this incident. First indication of a problem was cruise control, auto braking failed iin June of 2023. This follows a replacement of defective front radar unit by Hyundai which was replaced at 8295 miles on July 26, 2023. This problem first occurred in late June/early July of 2023. There was no warning.

While my son was driving on the highway, the Smart cruise control suddenly stopped working with "check forward safety system" and "check Smart cruise control system".

Just quit working after being adjusted still not fixed though has been to Hyundai. Say parts are back ordered for months.

I was driving using cruise control when suddenly I got the error message “check forward safety system” and my cruise control no longer functions. Turned car off and back on and message is still there. As the emergency braking system stopped working, this is a safety issue. Have not taken it to dealer yet. The car has other software/electrical issues related to the reverse camera and apple carplay. There seems to be several software issues with this car.

Check forward safety system is on all the time, dealer refusing to fix it. Did have airbag recall repai done yesterday had computer update done on car.

The forward collision warning stopped working several months ago. We gave the (leased) car to the dealer for repairs after 4 weeks of waiting (parts, etc. ) we were told the car was fixed and ready for pick-up. I drove it from baltimore to DC for a meeting and on several occassions when car stopped abruptly in front of me on the highway it did not give a warning, when I tried using cruise control, it would not engage because the conditions for doing so had not been met - same message I had when foward collision was not working. It's pretty clear that this was not fixed and instead they must have changed the messaging so that it does not appear as a warning when you start the car. The feature is really important to us because it has prevented a potentially fatal accident on a winding road in NY state where we found a truck on our lane due to a downed tree on the other lane - the car braked well before I did- which is the point of these safety systems. The dealer is len stoler Hyundai in owings mills.

While driving down the highway, a warning light stating the forward collision warning system became inoperable, as well as the adaptive cruise control system. Vehicle has no collisions, yet the dealer can't get the system to calibrate again.