Recommended maintenance for the radar sensor
In order for the camera/radar sensor to function properly, the area of the windshield in front of the unit must be kept free of dirt, ice, snow, etc. and should be washed regularly with water and car washing detergent.
Note
Dirt, ice and snow covering the camera and radar unit reduce their function and can make measurement impossible.
It could cause functions to be reduced, deactivated completely or produce an incorrect function response.