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once a week. The valves should be emptied once
a day in extremely dusty environments. Check
the extraction valves
1
regularly for damage.
Have damaged extraction valves
qualified specialist workshop as soon as possible.
Stop the vehicle.
#
Apply the parking brake.
#
Switch off the engine.
#
Hold a container below the extraction valves
#
1.
Press the extraction valves
#
Cleaning the coarse filter for heating and cli‐
mate control
Combination or pollen filters must not be
cleaned. They must be replaced.
A combination or pollen filter is marked with the
letter "C" or "P" on the top.
A coarse filter may only be tapped out or blown
out.
A coarse filter is clearly marked with the letter
"B" on the top.
When you are using compressed air to blow out
the filter, keep a minimum distance of 20 cm
between the compressed air nozzle and the filter.
Tap out or blow out the coarse filter carefully and
only to the opposite of the given airflow direction.
The airflow direction is marked with arrows on
the top of the coarse filter.
Careless or incorrect cleaning can damage the
coarse filter.
Open the maintenance flap (
#
Slide the catch
2
on the air intake duct
#
towards %.
Remove the air intake duct 1.
#
Pull the coarse filter out of the duct.
#
Tap out or blow out the coarse filter.
#
1
replaced at a
Push the coarse filter into the duct. In doing
#
so, pay attention to the airflow direction indi‐
cated by arrows on the top. The arrows must
point downwards.
Fit the air intake duct 1.
#
Slide the catch
#
towards r.
1
together.
Replacing the wiper blades
& WARNING Risk of injury due to use of
If you are working on the wiper blades or
wiper arms and using the steps and grab han‐
dles at the front of the vehicle, you may slip
and/or fall.
#
& WARNING Risk of becoming trapped if
If the windscreen wipers begin to move while
you are changing the wiper blades, you can
be trapped by the wiper arm.
#
* NOTE Damage to the wiper blade
#
* NOTE Damage to the maintenance flap
If the maintenance flap is opened while the
wiper arms are folded out, it could be dam‐
aged.
If the wiper arms are folded back without
page 321).
/
wiper blades, the windscreen could be dam‐
1
aged.
Maintenance and care 325
2
on the air intake duct
unsuitable climbing aids during wiper
blade replacement
When replacing the wiper blades,
always use solid and stable climbing
aids, e.g. a suitable ladder.
the windscreen wipers are switched on
while wiper blades are being replaced
Always switch off the windscreen wip‐
ers and ignition before changing the
wiper blades.
Touch the wiper blade only on the wiper
arm.
Otherwise, the wiper blade could be
damaged.
or the windscreen
1
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