Mercedes-Benz GLS 2020 Operator's Manual page 141

Installing the wiper blades
Insert the new wiper blade into the wiper
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arm in the direction of arrow 1.
Slide catch 2 in the direction of arrow
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until it engages in the locking position.
Make sure that the wiper blade is seated cor‐
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rectly.
Fold the wiper arms back onto the wind‐
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shield.
Switch on the ignition.
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Press the î button on the combination
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switch ( page 137).
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The wiper arms will move into the original
position.
Maintenance display
3
Light and visibility 139
Remove protective film 1 from the mainte‐
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nance display on the tip of the newly instal‐
led wiper blades.
If the color of the maintenance display changes
from black to yellow, the wiper blades should be
replaced.
% The duration until the color changes varies
depending on the usage conditions.
Replacing the rear window wiper blade
& WARNING Risk of becoming trapped if
the windshield wipers are switched on
while wiper blades are being replaced
If the windshield wipers begin to move while
you are changing the wiper blades, you can
be trapped by the wiper arm.
Always switch off the windshield wipers
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and the ignition before changing the
wiper blades.
Removing the wiper blade
Switch the ignition off.
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