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Practical hints
Batteries
Reconnecting the batteries
̈ Turn off all electrical consumers.
̈ Connect the positive lead and fasten its
cover.
̈ Connect the negative lead.
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. Gases may escape during charg-
ing and cause explosions that may result in
paint damage, corrosion or personal injury.
!
NEVER invert the terminal connections!
The battery, its filler caps and the vent
tube must always be securely installed
when the vehicle is in operation.
i
The following procedures must be car-
ried out following any interruption of
battery power (e.g. due to reconnec-
tion):
ț Set the clock (୴ page 136) (vehi-
cles with COMAND*: see COMAND
operator’s manual).
ț Resynchronize the front seat head
restraints (
୴ page 104).
ț Resynchronize the ESP
(
୴ page 75).
ț Re-enter the radio code (see radio
operating instructions).
ț Resynchronize the side windows
(
୴ page 186).
ț Resynchronize the sliding/pop-up
roof* (
୴ page 189).