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Practical hints
Unlocking/locking in an emergency
Changing batteries in the SmartKey
If the batteries in the SmartKey are
discharged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an
authorized Mercedes-Benz Center.
Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
1 Mechanical key
2 Battery compartment
Replacement batteries: Lithium, type
CR 2025 or equivalent.
̈ Remove mechanical key 1
(
୴ page 305).
̈ Insert mechanical key 1 in side
opening and push grey slide.
Battery compartment 2 is unlatched.
̈ Pull battery compartment 2 out of the
SmartKey housing in direction of
arrow.
3 Battery
4 Contact spring
̈ Remove the batteries.
̈ Using a lint-free cloth, insert new
batteries under contact spring with the
plus (+) side facing up.
̈ Return battery compartment 2 into
housing until it locks into place.
Warning! G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
i
When changing batteries, always
replace both batteries.
The required replacement batteries are
available at any Mercedes-Benz
Center.
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