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Practical hints
Battery
Charging and reinstalling the battery ̈ Charge battery in accordance with the
instructions of the battery charger
manufacturer.
̈ Reinstall the charged battery. Follow
the previously described steps in
reverse order.
Reconnecting the battery
̈ Turn off all electrical consumers.
̈ Remove SmartKey from starter switch.
̈ Connect the battery positive lead and
fasten its cover 3 (
୴ page 384).
̈ Connect the battery negative lead 2
(
୴ page 384).
̈ Reinstall the filter box (୴ page 383).
Batteries contain materials that can harm
the environment if disposed of improperly.
Large 12 volt storage batteries contain
lead. Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.
Warning! G
Never charge a battery while still installed in
the vehicle unless the accessory battery
charge unit approved by Mercedes-Benz is
being used. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
An accessory battery charge unit specially
adapted for Mercedes-Benz vehicles and
tested and approved by Mercedes-Benz is
available, permitting the charging of the bat-
tery in its installed position. Contact an au-
thorized Mercedes-Benz Center for
information and availability. Charge battery
in accordance with the separate instruc-
tions for the accessory battery charger.
!
The battery, its filler caps and the battery
ventilation hose must always be securely in-
stalled when the vehicle is in operation.
!
Always connect the battery in the order de-
scribed below. Otherwise the vehicle’s electron-
ics can be damaged.
!
Never invert the terminal connections!
i
The following procedures must be carried
out following any interruption of battery power
(e.g. due to reconnection):
ț Set the clock (୴ page 136).
Vehicles with COMAND*:
See COMAND operator’s manual.
ț Synchronize side windows (୴ page 222).
ț Synchronize tilt/sliding sunroof*
(
୴ page 226).