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Replacing SmartKey batteries
355
i
For your convenience, we recommend
that you have this work carried out at an
authorized Mercedes-Benz Center.
1
Pull
2
Adjust downward
3
Press
X
Pull the top of the head restraint cushion in
direction of arrow 1 as far as it will go.
X
Adjust the head restraint cushion
downward in direction of arrow 2 as far as
it will go.
X
Firmly press the top of the active head
restraint cushion towards the head
restraint cover in direction of arrow 3 until
it engages.
X
Repeat this procedure on the active head
restraint for the second front seat.
For information on active head restraints, see
“Active head restraints” (Y page 64).
Replacing SmartKey batteries
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.
G
Warning!
Batteries contain poisonous and corrosive
substances. Therefore, keep the batteries
out of reach of children.
If a battery is swallowed, seek medical help
immediately.
G
Warning
SmartKey batteries contain perchlorate
material, which may require special
handling and regard for the environment.
Check with your local government’s
disposal guidelines. California residents,
see www.dtsc.ca.gov/HazardousWaste/
Perchlorate/index.cfm.
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.
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 353).
1
Mechanical key
2
Battery compartment
Practical hints
Z