Opening the DEF filler cap
The filler neck for DEF is behind the fuel filler flap.
The fuel filler flap is unlocked or locked automatically when you open or close the vehicle with the SmartKey or with KEYLESSGO.

- Switch off the ignition.
- Press the fuel filler flap in the direction of
arrow 1.
The fuel filler flap swings up.
- Turn blue DEF filler cap 2
counterclockwise and remove it.
DEF filler cap 2 is secured with a plastic
strap.
See also:
Parking lamps/standing lamps
(halogen headlamps)
•► Switch off the lights.
•► Open the hood.
•► Turn housing cover 1 counter-clockwise
and pull it out.
•► Pull out bulb holder 2.
•► Take the bulb out of bulb hol ...
Muscular Moves
Shortly after last year's GL450 arrived, Mercedes introduced a diesel GL320
CDI; click here to compare the 2008 GL-Class with the 2007 model. Thanks to the
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Driving on flooded roads
Do not drive through flooded areas. Check the depth of any water before driving
through it. Drive slowly through standing water. Otherwise, water may enter the
vehicle interior or the engine co ...
