See also:

Limitations
Strong sunlight, reflections, extreme light contrasts, the use of sunglasses, or if the driver is not looking straight ahead may make the visual warning signal in the windshield difficult to see ...

Fault tracing and actions
If the message Radar blocked See manual is displayed, this means that the radar signals from the sensor have been obstructed and that a vehicle ahead cannot be detected. This, in turn, means that ...

Air vents in the dashboard
A - Open B - Closed C - Horizontal airflow D - Vertical airflow Direct the outer air vents toward the side windows to defrost. ...