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Practical hints
Batteries
̈ Remove the luggage box (୴ page 408).
̈ Disconnect battery negative lead 1.
̈ Remove cover 2 from the positive ter-
minal.
̈ Disconnect the battery positive lead.
Removing the battery
̈ Remove the screw-nuts securing the
battery.
̈ Remove the battery bracket.
̈ Take out the 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 re-
verse order.
Reconnecting the battery
̈ Turn off all electrical consumers.
̈ Connect the positive lead and fasten its
cover.
̈ Connect the negative lead.
̈ Install the luggage box (୴ page 408).
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 159)
(see COMAND operator’s manual).
ț Resynchronize the ESP
(
୴ page 372).
ț Resynchronize the side windows
(
୴ page 220).
ț Resynchronize the tilt/sliding sun-
roof* (
୴ page 225) or the tilt/slid-
ing panel* (
୴ page 229).