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Practical hints
Replacing SmartKey batteries
sellers of batteries to accept old batteries for
recycling.
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 540).
Mechanical key
1
Battery compartment
2
542
X
Insert mechanical key
into opening.
1
X
Press mechanical key
in direction of
1
arrow.
Battery compartment
is unlatched.
2
X
Pull battery compartment
2
SmartKey housing.
Batteries
3
Contact springs
4
X
Pull out batteries 3.
X
Insert new batteries
under contact
3
springs
with the positive terminal (+)
4
side facing up.
X
Return battery compartment
SmartKey housing until it locks into place.
X
Slide mechanical key
SmartKey.
X
Check the operation of the SmartKey as
well as the KEYLESS-GO function.
out of the
into
2
back into the
1
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