2021 Hyundai Tucson: Front collision warning system
Common wear/failure (not a recall)
Symptoms
Owners of the 2021 Tucson report: front collision warning system. CarComplaints.com lists 1 owner complaints, average mileage 600 miles.
NHTSA has 12 owner complaints for the 2021 Tucson in this area. Examples:
- NHTSA complaint ODI #11770328 (filed 10/10/2026): “Loss of info system loss of all dash lights when i turn the engine off most of the time i loose all electrical systems (will not start for at least 15 minutes) if doors lock i can only unlock the drivers door with the auxiliary key. has tried to shift in to …”
- NHTSA complaint ODI #11737345 (filed 05/12/2026): “Vehicle stalled approximately 15 times between april 17 and may 4, 2026, including once on interstate xxx at approximately 50mph with minor children ages [xxx] and [xxx] in the vehicle. the oil and battery lights illuminated simultaneously at each stall. dia…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: none clearly reported. Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Moderate
Finding and splicing chewed wiring is doable with a multimeter and patience but can be time-consuming; harness replacement is pro work. (Our assessment.)
Cost
No sourced cost range: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
Page last updated .