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:
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Programming
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Engine
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Possible causes/consequences and •► Solutions
The yellow Check
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Important safety notes
WARNING
Always remember that you must concentrate
primarily on driving the vehicle. The driver's
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primarily at road traffic. For your own safety
and tha ...
