Mercedes-Benz 2011 E-Class Cabriolet Operator's Manual page 80

SmartKey
78
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.
Checking the battery
X
Press the & or % button.
The battery is working properly if battery
charge indicator lamp : lights up briefly.
If battery charge indicator lamp : does not
light up briefly during the test, the key
batteries are discharged.
X
Change the key battery (
i
Consult any authorized Mercedes-Benz
Center for a key battery.
i If the battery is tested within the signal
range of the vehicle, you can open or close
the vehicle by pressing & or %
respectively.
Changing the battery
You require a CR 2025 3 V cell battery.
X
Take the mechanical key out of the
SmartKey ( Y page 77).
X
X
X
Y page 78).
X
X
X
Press mechanical key ; into the opening
in the SmartKey in the direction of the
arrow until battery tray cover : opens. Do
not hold the cover closed while doing so.
Remove the cover of the battery tray.
Repeatedly tap the SmartKey against your
palm until battery = falls out.
Insert the new battery with the positive
pole facing upwards. Use a lint-free cloth to
do so.
Insert the front tabs of the battery tray's
cover first and then press to close it.
Check the function of all SmartKey buttons
on the vehicle.