To reset a collision mitigation system warning on a Honda Pilot, safely reboot the vehicle and clear any sensor obstructions; if the warning persists, have the system inspected by a dealer or qualified technician.
What the Collision Mitigation Braking System (CMBS) does and why it may show a problem
How CMBS works and common fault triggers
CMBS is part of Honda Sensing. It uses a forward-facing radar and a camera to detect potential collisions and can provide warnings or intervene with braking. The system relies on sensors located in the front bumper and a camera near the windshield. Debris, ice, snow, dirt, or misalignment can cause the sensors to misread or temporarily fail, triggering a warning. In some cases, a software update or calibration at the dealership is needed to restore full functionality.
Steps to reset or troubleshoot a CMBS warning
Before attempting a reset, ensure you are in a safe location and conditions are suitable for handling the vehicle. The following steps are designed to reinitialize the CMBS and clear minor faults that may be caused by dirt or a temporary sensor glitch.
- Park in a safe location, turn off the engine, wait about 60 seconds, then restart the vehicle. This can reboot the CMBS control module and related sensors.
- Toggle Honda Sensing off, then back on using the appropriate switch on the dashboard or steering wheel, and check if the warning clears after a short drive.
- Inspect the sensors for obstructions. Clean the front bumper radar area and the windshield camera with a soft microfiber cloth, removing dirt, ice, snow, or film that could impair sensing.
- Check for visible damage or misalignment to the front bumper or grille area that could misalign the radar or camera. If you notice damage, avoid driving aggressively and seek professional inspection.
- If the warning reappears or remains “unavailable” after these steps, do not rely on CMBS while driving. Schedule a diagnostic check with a Honda dealer or certified service center to inspect, calibrate, and/or update the system software as needed.
Concluding: A temporary reset and sensor cleaning can clear minor faults, but persistent or recurring CMBS warnings typically require professional diagnosis and calibration to maintain proper safety performance.
When to seek professional service
What a technician will typically review
If it’s not cleared by the above steps, a dealer or qualified technician will typically inspect the CMBS radar sensor, camera alignment, wiring, and the control modules. They may perform a diagnostic scan, calibrate the sensors, update software, or replace faulty components if necessary. In some cases, road testing and reconfiguration of the system are required to restore full functionality.
Summary
The Honda Pilot’s Collision Mitigation Braking System can be reset through a simple reboot and by clearing sensor obstructions. If warnings persist after these steps, professional diagnostic and possible calibration or software updates are advised to ensure the system operates safely. Always drive cautiously and rely on standard braking if CMBS is unavailable.