Troubleshooting
Washer fluid level too low
The indicator lamp lights up yellow.
Fill up the washer fluid reservoir as soon as possible (→ Washer fluid).
Wiper fault
The indicator lamp lights up yellow.
The wipers do not wipe.
—Switch the ignition on and off.
—If the fault persists, seek expert assistance.
Fault in rain and light sensor
The indicator lamp lights up yellow.
The wipers are not switched on automatically if it rains during rain/light sensor operation.
—Switch the ignition on and off.
—If the fault persists, seek expert assistance.
Changes in the response of the rain and light sensor
Possible causes for faults and misinterpretationsrelating to the sensitive surface of the rain and light sensor (→ Front
view) include:
—Damaged wiper blades: a film of water or smears caused by damaged wiper blades can increase the time the
wipers are switched on, can shorten the length of the intervals between wipes or cause the wipers to run
continuously.
—Insects: insects hitting the windscreen surface can cause the wipers to be activated.
—Salt deposits: in winter, salt deposits can cause the wipers to continue to wipe the windscreen when it is almost
dry.
—Dirt: dry dust, wax, windscreen coatings(lotus effect), or detergent deposits (from an automatic car wash)can
cause the rain/light sensor to become less sensitive and react later or too slowly, or prevent it from reacting at all.
Clean the sensitive surface of the rain and light sensor at regular intervals and inspect the wiper blades for damage
(→ Vehicle care, exterior).
—Crack in the windscreen:a wash cycle will be triggered if the rain/light sensor is on when the windscreen is
impacted by a stone. The rain/light sensor will then register the reduction in sensitivity of the surfaces and adjust
accordingly. Depending on the size of the stone impact, the response of the rain/light sensor may change.
We recommend that you use an alcohol-based glass cleaner to remove wax and polish.
The wipers will try to wipe away any obstacles that are on the window. The wipers will stop moving if the
obstacle blocks their path. Remove the obstacle and switch the wipers back on again.
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