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Practical hints
Unlocking/locking in an emergency
SmartKey with KEYLESS-GO*
1 Battery
2 Tilt battery up
3 Mechanical key
i
The required replacement battery is
available at any authorized
Mercedes-Benz Center.
334
Replacement battery: Lithium, type
CR 2025 or equivalent.
Remove mechanical key ( page 331).
Insert the mechanical key in side open-
ing and push gray slide.
The battery compartment is unlatched.
Pull the battery compartment out of the
SmartKey housing.
Using mechanical key 3, apply pres-
sure to position 2.
Battery 1 tilts up slightly.
Pull out battery 1 in direction of ar-
row.
Using a lint-free cloth, insert new bat-
tery with the plus (+) side facing up.
Return battery compartment into hous-
ing until it locks into place.
Fuel filler flap
In case the central locking system does
not release the fuel filler flap, you can it
manually.
1 Release knob
Open the trunk.
Remove the battery cover and the trim
inside the trunk on the right-hand side.
Pull release knob 1 in the direction of
arrow.
The fuel filler flap can be opened.
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