Vehicles with rain and light sensor: if the
Ä or Å setting is used, an appropriate
wipe frequency is automaticallyset according
to rainfall. In the Å position, the rainand
light sensor is more sensitive than in the Ä
position, causing the windshield wipersto
wipe more frequently.Ifthe rainand light sen-
sor fails, the wiper automaticallyswitchesto
the wiping interval corresponding to the posi-
tion of the switch.
Windshieldwasher system
Combination switch
X
Singlewipe: brieflypress the î button.
X
To wipe the windshield using washer
fluid: press and holddownthe î button.
Notesonwinterdriving
Headlamps
!
If the plastic lenses or headlampsice up in
winter, do not remove the ice layerwithan
ice scraper.You could otherwise scratch the
plastic covers. Only usede-icer spray that is
suitablefor plastic surfaces.
Windshieldwasher system
At temperaturesofapproximately 23 ‡(Ò5†)
to 41 ‡(5†)withsnowfall, direct the airto
the windshield using the airdistribution con-
trol z (Y page 59). On this setting, the
wiper blades on the front windshield are
heated. In this wayyou can prevent smearing
or the snow freezing on the wiper blade.
Voltage supply
Battery isolator switch
G
WARNING
If the voltagesupplyisinterrupted with the
battery isolator switch, the engine is
switchedoff automatically. Safety-relevant
functions may therefore be restrictedor
unavailable, e.g. power steering,lighting sys-
tem and ABS. The compressed-airsupply
fails.
To steer, youwillrequire considerably more
force.The wheelscould lock during braking.
Also,the spring-loaded parking brake can
activate if there is alossofcompressed air
and the vehiclemay then brake uncontrolla-
bly. Youcould lose control of the vehicle.
There is ariskofanaccident.
Do not operate the battery isolator switch
unless the vehicleisstationary and the park-
ing brake is applied.
Battery isolator switch (example:onthe right side
of the vehicle)
Interruptthe voltagesupplywiththe battery
disconnect switch. Thisprevents short cir-
cuits, which could create sparks thatmight in
turn cause afire or an explosion.
Whenyou have safelyparked the vehicle, you
can usethe battery disconnect switch, e.g.
when loading the vehicleinahazardousgoods
area. After switching off the ignition and
before operating the battery disconnect
switch, observe the run-ontime of the control
units (instrument cluster and MCM). Only use
the battery disconnect switch when the vehi-
cle is stationary. Observe the notes in the on-
board computerevent window,and for vehi-
54
Voltage supply
Driver's workstation
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