2021 Ford Bronco lane departure problems
10 owner complaints filed with NHTSA name the lane departure on the 2021 Ford Bronco — 5% of all complaints for this model year.
What owners report
“My BLIS module on the passenger side does not work and I have a constant warning light displayed that there is a system malfunction. Under further investigation, this is a KNOWN design issue caused by the rear wiring harness that contains the BLIS sensor rubbing against components in the rear…”
filed Mar 16, 2026
“The wiring harness is rubbing against the bumper, causing it to wear and eventually cut through. This causes an error to my BSM/Cross Traffic alert. I have an extended warranty, but it doesn't cover it. This is a problem I have seen on the Bronco6G forums.”
filed Feb 5, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Lane Departure problems in other Bronco years
| Year | Reports | Share |
|---|---|---|
| 2025 Bronco | 2 | 4% |
| 2024 Bronco | 6 | 8% |
| 2023 Bronco | 1 | 0% |
| 2022 Bronco | 1 | 0% |
Other reported problem areas on the 2021 Ford Bronco
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.