Using the rain sensor

Updated 03/19/2020

The rain sensor automatically starts the windscreen wipers based on how much water it detects on the windscreen. Rain sensor sensitivity can be adjusted with the thumbwheel on the right-hand stalk switch.

P5-1617 S90-Rain sensor — Right-hand stalk switch.

P5-Icon red circle 1 — Right-hand stalk switch.

When the rain sensor is activated, the rain sensor symbol P5-1507-Rain sensor symbol is shown in the driver display.

Activating the rain sensor

When activating the rain sensor, the car must be running or in ignition position I or II while the windscreen wiper stalk switch is in position 0 or in the position for a single sweep.

Activate the rain sensor by pressing the rain sensor button P5-1507-Rain sensor symbol on the stalk switch .

Move the lever down to make the wipers move.

Turn the thumbwheel upward for higher sensitivity and downward for lower sensitivity. An extra sweep is made when the thumbwheel is turned upward.

Deactivating the rain sensor

Deactivate the rain sensor by pressing the rain sensor button P5-1507-Rain sensor symbol on the stalk switch or moving the stalk switch up to another wiper program.

The rain sensor is deactivated automatically in ignition position 0 or when the engine is switched off.

The rain sensor is deactivated automatically when wiper blades are set in service position. The rain sensor is reactivated when service mode has been deactivated.

Important

The windscreen wipers could start and be damaged in an automatic car wash. Deactivate the rain sensor while the car is running or when the car's electrical system is in ignition position I or II. The symbol in the driver display extinguishes.