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Practical hints
Battery
Disconnecting the battery
̈ Depress parking brake firmly or move
gear selector lever to position P.
̈ Turn off all electrical consumers.
̈ Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO*:
̈ Press the start/stop button until
the engine shuts off.
̈ Open the driver’s door.
̈ Open the trunk.
̈ Read and observe safety instructions
and precautions (
୴ page 420).
̈ Remove the luggage box (୴ page 395).
̈ Disconnect battery negative lead 2.
̈ Remove cover 1 from the positive ter-
minal.
̈ Disconnect the battery positive lead.
Removing the battery
̈ Remove the screw-nuts securing the
battery.
̈ Remove the battery bracket.
̈ Pull out the battery ventilation tube
from the battery (depending on battery
arrangement in your vehicle model, the
battery ventilation tube is located on
the left or right side of the battery).
̈ Take out the battery.
!
As with any other battery, disconnect the
battery if you do not intend to operate your vehi-
cle for an extended period of time to prevent bat-
tery discharge or connect an accessory battery
charge unit expressly approved by
Mercedes-Benz for your vehicle model to main-
tain the battery charge. Contact an authorized
Mercedes-Benz Center for further information.
The battery, the battery ventilation hose and the
lateral plug must always be securely installed
when the vehicle is in operation.
!
Never loosen or detach battery terminal
clamps while the engine is running or the
SmartKey is in the starter switch. Otherwise the
alternator and other electronic components
could be severely damaged.
Have the battery checked regularly by an autho-
rized Mercedes-Benz Center.
Refer to Maintenance Booklet for maintenance
intervals or contact your authorized
Mercedes-Benz Center for further information.
Warning! G
With a disconnected battery
ț you will no longer be able to turn the
SmartKey in the starter switch and
pressing the KEYLESS-GO* start/stop
button on the gear selector lever will
have no effect
ț the gear selector lever will remain
locked in position P