Replacing Smartkey Batteries - Mercedes-Benz 2010 C-Class Operator's Manual

Replacing SmartKey batteries

312
X
Fold the head restraint cushion by the top,
back firmly until it engages :.
X
Repeat this procedure on the NECK-PRO
active front head restraint for the second
front seat.
For information on NECK-PRO active front
head restraints, see "NECK-PRO active front
head restraints" (
For information on head restraint adjustment,
see "Seats" ( Y
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 (USA only) or
provinces (Canada only) 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.
Y page 52).
page 79).
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 309).
X
Press mechanical key ; into the SmartKey
opening until battery compartment
cover : opens. Do not keep the cover
shut.
X
Remove the battery compartment cover.
X
Pat the SmartKey against the palm of your
hand until battery = falls out.
X
Insert the new battery with the positive
terminal (+) facing up. Use a lint-free cloth.
X
Insert the tabs of the battery compartment
cover into the housing and press the cover
closed.
X
Check the operation of the SmartKey as
well as the KEYLESS-GO function.