Replacing; Important Safety Notes; Checking The Battery - Mercedes-Benz CLS Operator's Manual

ignition lock. The SmartKey must be in the
vehicle.
or
X
Lock or unlock the vehicle using KEYLESS-
GO. The SmartKey must be outside the
vehicle.
If you unlock the vehicle using the mechanical
key, the fuel filler flap will not be unlocked
automatically.
X
To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key
Release catch
:
Mechanical key
;
X
Push release catch : in the direction of
the arrow and at the same time remove
mechanical key ; from the SmartKey.
SmartKey battery

Important safety notes

G
WARNING
Batteries contain toxic and caustic
substances. For this reason, keep batteries
out of the reach of children.
If a battery has been swallowed, seek medical
help immediately.
G
WARNING
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. Observe
government disposal guidelines. California
residents, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm.
Mercedes-Benz recommends that you have
the batteries replaced at a qualified specialist
workshop.

Checking the battery

X
Press the & or % button.
The battery is working properly if battery
check lamp : lights up briefly.
The battery is discharged if battery check
lamp : does not light up briefly.
X
Change the battery (
If the SmartKey battery is checked within
i
the signal reception range of the vehicle,
pressing the & or % button:
locks or
R
unlocks the vehicle
R
i You can get a battery in any qualified
specialist workshop.
Replacing the battery
You require a CR 2025 3 V cell battery.
X
Take the mechanical key out of the
SmartKey ( Y page 76).
SmartKey
Y page 77).
Z
77