Lost Communication with Cruise Control Front Distance Range Sensor
Adaptive cruise control has lost the front radar / distance sensor. ACC is deactivated, fixed-speed cruise may stay available, and forward collision warning is disabled.
Affected components
- Acc radar
- Can bus wiring
Common causes
- High likelihood: Radar obstructed or misaligned
- Medium likelihood: Radar unpowered
- Low likelihood: Gateway module routing CAN messages incorrectly
Possible symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Diagnostic notes
- The malfunction indicator lamp may illuminate
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.