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Practical hints
Replacing SmartKey batteries
If the batteries in the SmartKey or the
SmartKey with KEYLESS-GO* are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized 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.
SmartKey
Replacement batteries: Lithium, type
CR 2025 or equivalent.
̈ Remove the mechanical key out of the
SmartKey (
୴ page 388).
1 Mechanical key
2 Slide
3 Battery compartment
̈ Insert mechanical key 1 in the direc-
tion of arrow in side opening.
̈ Using mechanical key 1, push gray
slide 2 to unlatch battery compart-
ment 3.
̈ Pull battery compartment 3 out of the
housing in the direction of arrow.
Warning! G
Batteries contain poisonous and corrosive
substances. Therefore keep the batteries
out of reach of children.
If a battery is swallowed, seek medical help
immediately.
i
When inserting the batteries, make
sure they are clean and free of lint.
i
The required replacement batteries are
available at any authorized
Mercedes-Benz Center.
i
When changing batteries, always re-
place both batteries.