Urgency: Low
Adaptive Cruise Control Light
This is usually informational. Address it at your convenience.
What the Adaptive Cruise Control Light Means
The adaptive cruise control light on a your car confirms the radar-based cruise system is active and managing your distance to the car ahead. A fault or 'unavailable' status is usually caused by a blocked radar sensor.
Common Causes
- Front radar sensor blocked (dirt, snow, mud)
- Adaptive cruise engaged (normal)
- Radar calibration needed
- Sensor or module fault
- Poor weather limiting the radar
How to Fix It
- Clean the front radar area (grille/badge)
- Confirm the system is switched on
- Clear snow or ice from the sensor in winter
- Recalibrate the radar after front-end repairs
- Scan for driver-assist codes if it stays down