2020 Hyundai Elantra: false forward collision warnings

Filed Aug 18, 2026 · Driver assistance · CA

Logic board failure part number 99211-F2000 leading to inoperable lane keeping assist and forward collision avoidance.

Filed Jul 3, 2026 · Driver assistance, Electrical · TX

I have a 2020 Hyundai Elantra Limited that was purchased new in December of 2020, has 17,764 miles, and no damage. At the end of May/early June of 2026, the car gave warning messages for the following: check forward collision avoidance assist system, check lane keep assist system, and check high beam assist system. The car was inspected by the dealership, from which it was purchased, on June 29, 2026. The technician report says error codes C1604 and C1606 were found and that the car required replacement of the front camera system at the cost of $1991.49. Front camera failure negates the ability to use the advanced safety features of this car. These features are so important to alert and, more importantly, assist the driver avoid accidents and improve all motorists safety. I have read numerous complaints depicting the same problem with this front camera system. Hyundai issued TSB 20-BE-006H due to multiple problems just like the one that happened to me. I have corresponded with Hyundai about this situation and my concerns on why a car with this few miles and no damage had a failure of this magnitude. They are unwilling to assist due to the warranty expiring 6 months ago. For components this important to the safety of all drivers, I would like to see a recall established to hold Hyundai accountable for faulty components. Safety should not be limited by a warranty and last longer than 5 1/2 years. Than you for your consideration.

Filed Sep 11, 2025 · Electrical · 110,000 miles · NJ

The contact owns a 2020 Hyundai Elantra. The contact stated that while his son was driving at an undisclosed speed, the Lane Assist safety feature failed to function as intended. The messages “Forward Collision Avoidance”, and “Lane Assist Camera Disabled” were displayed. The vehicle was taken to a local dealer, where it was diagnosed, and determined that the Forward Collision Avoidance and Lane Assist Camera needed to be replaced. The vehicle was not repaired because the warranty was invalid. The manufacturer was made aware of the failure. The failure mileage was approximately 110,000.

Filed May 31, 2022 · Electrical, Engine · CA

Approximetly 8 months after purchase car stalled while sitting at RR tracks and traffic light. Replaced battery after stranded due to dead battery. After putting twenty dollars of gas car engine sputtered very loud as if it was running out of fuel this continues to occur. At departure engine stalls restarts and stalls repeats hyndai unavailable for at least 30 days and would not provide loaner or alternative for car with under 60k miles disabled. Enterprise car sales would not assist in trade or repair. Engine light appears then disappears. Headlights feature stopped working it is manual operation only. Collision warning activated on an empty roadway. Tire light illuminated Replaced 1 of 4 older mismatched tires. Car is unsafe due to early occurances of electrical, mechanical, engine and computer fail without warning. Enterprise car sales will not take car as trade in, Hyndai service appointments booked 30 to 45 day waiting period with no alternative repair or loaner car I have been affected financially and loan is defaulted since I am unable to work. Excessive time spent trying to trade in car, find repair facility, roadside. Car towed due to stalled unable to drive unsure about using car with no warning disabling issues.

Filed Nov 17, 2021 · Driver assistance · IL

My car does not have forward collision warning or lane departure warning. But sometimes it will randomly pop up and the screen and cause my breaks to abruptly stop and almost crash.This has happened atleast 8 times and the car was bought brand new in 2020

Filed Dec 14, 2020 · Driver assistance · 1,700 miles · AL

Tl* the contact's boyfriend owns a 2020 hyundai elantra. The contact stated that while driving at various speeds, the forward collision avoidance system activated independently. The contact also stated that the forward collision avoidance warning light was displayed on the instrument panel. The contact had initially taken the vehicle to mitchell hyundai (1600 e. Park ave, enterprise, al 36330) where the service tech stated that the dealer tag may have caused the issue. The contact disputed the claim. The failure recurred twice. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 1,700.

Filed Sep 25, 2019 · Driver assistance · 500 miles · NY · crash

Tl* the contact owns a 2020 hyundai elantra. While driving 60 MPH, the forward collision avoidance system failed to warn of an ice bucket in the roadway. While attempting to avoid the ice bucket, the contact struck the ice bucket with the passenger side bumper. The contact stated that there was physical damage to the bumper. A police report was filed and there were no injuries. The vehicle was taken to an independent mechanic for the body repairs. The vehicle was taken to atlantic hyundai (193 sunrise hwy north service rd, west islip, ny 11795, (631) 587-0700) where it was diagnosed that the forward collision avoidance system functioned as intended. The manufacturer was informed of the failure. The approximate failure mileage was 500. The VIN was not available. *tr*jb *dt