191 Controls in detail
Good visibility
Good visibility
For information on windshield wipers, see 
“Windshield wipers” (
page 54).
Headlamp cleaning system*
The button is located on the left side of the 
dashboard.
1Headlamp washer button
Switch on the ignition (
page 36).
Press button1.
The headlamps are cleaned with a 
high-pressure water jet.For more information on filling up the 
washer reservoir, see the “Operation” sec-
tion (
page 300).
Rear view mirrors
For more information on setting the rear 
view mirrors, see “Mirrors” (
page 44).
Auto-dimming mirrors
The reflection brightness of the exterior 
rear view mirror on the driver’s side and 
the interior rear view mirror will respond 
automatically to glare when
the ignition is switched on
and
incoming light from headlamps falls on 
the sensor in the interior rear view mir-
ror.
The rear view mirrors will not react if
reverse gear is engaged
the interior lighting is turned on
iThe headlamps are cleaned automati-
cally if:
the lights are switched on
and
the windscreen is wiped with wind-
screen washer fluid fifteen times
If the ignition is switched off, the auto-
matic headlamp cleaning mode is reset 
and counting is resumed from 0.