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Replacing SmartKey batteries
310
When inserting the batteries, make sure they
are clean and free of lint.
When replacing batteries, always replace
both batteries.
i
The required replacement batteries are
available at any authorized Mercedes-Benz
Center.
Replacement batteries: Lithium, type
CR 2025 or equivalent.
X
Remove the mechanical key from the
SmartKey (Y page 307).
1
Mechanical key
2
Battery compartment
X
Insert mechanical key 1 into opening.
X
Press mechanical key 1 in direction of
arrow.
Battery compartment 2 is unlatched.
X
Pull battery compartment 2 out of the
SmartKey housing.
3
Batteries
4
Contact springs
X
Pull out batteries 3.
X
Insert new batteries 3 under contact
springs 4 with the positive terminal (+)
side facing up.
X
Return battery compartment 2 into
SmartKey housing until it locks into place.
X
Slide mechanical key 1 back into the
SmartKey.
X
Check the operation of the SmartKey as
well as the KEYLESS-GO function.
Practical hints