Clean the Rear Park Assist sensors with water, car wash soap and a soft cloth. Do not use rough or hard cloths. In washing stations, clean sensors quickly keeping the vapor jet/high pressure washing nozzles at least 4 in (10 cm) from the sensors. Do not scratch or poke the sensors. Otherwise, you could damage the sensors.
See also:
24. Door Ajar
This light will turn on to indicate that one or more doors or the trunk may be
ajar. ...
Windshield Wipers And Washers
The windshield wiper/washer lever is located on the right side of the steering
column.
NOTE: The windshield wipers/washers will only operate with the ignition in the
ON/RUN position. ...
General failure indication
The warning light on the dial comes on when a failure is detected. ...