Two problems related to warning have been reported for the 2021 Honda Ridgeline. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2021 Honda Ridgeline based on all problems reported for the 2021 Ridgeline.
2021 Honda Ridgeline rtl-e. Part number 36160-t6z-a62-m1 failure, hard code u3000-49. Results in total loss of Honda sense safety system. Including collision mitigation braking system, road departure mitigation system, adaptive cruise control, lane keeping assist system, traffic sign recognition, auto high-beam headlights. This appears to be a fairly common issue across Honda models where the multipurpose camera fails, generally due to heat from exposure to sun. The replacement cost and required re-calibration via the dealer is ~$2000. Living in northern California with extreme heat, I will assume this problem will resurface after a few years resulting in another $2000+ repair.
At 48,000 miles, the vehicle began to experience multiple advanced driver assistance systems problems, including adaptive cruise control, forward collision warning, automatic emergency braking, forward collision warning, lane departure warning, and lane keeping assistance, which rendered all these systems inoperable. Systems that were designed to mitigate collisions became non-functional, and continuous warnings on the dashboard were a distraction while driving. Dealer scanned the vehicle with a code u300-40 multipurpose camera unit/millimeter wave radar internal electronic failure, and diagnosed a failure of the multipurpose camera, which was then replaced and recalibrated. I have retained the failed unit after paying to have the replacement installed and calibrated. All warning lamps for the above mentioned systems flashed on my dashboard every time the vehicle was started, prior to the dealer repair. The safety of the driver and those around them was affected because repairs for this safety feature suite may be cost prohibitive to some ($2000) and they just won't fix it.
| Warning problems | |
| Assist problems |