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Practical hints
Unlocking/locking in an emergency
1 Mechanical key
2 Battery compartment
Replacement batteries:
Lithium, type CR 2025 or equivalent.
̈ Remove mechanical key (୴ page 287).
̈ Insert the mechanical key 1 in side
opening and push briefly gray slide.
Battery compartment 2 is unlatched.
̈ Pull battery compartment 2 out of the
SmartKey housing in direction of ar-
row.
̈ Remove the batteries.
3 Battery
4 Contact spring
̈ Using a lint-free cloth, insert new bat-
teries under the contact spring with the
plus (+) side facing up.
̈ Return battery compartment into hous-
ing until locked in place.
̈ Slide mechanical key 1 back into the
SmartKey.
i
When changing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz Light
Truck Center.
i
When inserting the batteries, make
sure they are clean and free of lint.