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Practical hints
Battery
Reconnecting the battery
̈ Turn off all electrical consumers.
̈ Remove SmartKey from starter switch.
Vehicles with KEYLESS-GO* (Canada
only):
̈ Open the driver’s door.
̈ Connect the battery positive lead and
fasten its cover (
୴ page 448).
̈ Connect the battery negative lead
(
୴ page 448).
̈ Make sure that the ventilation hose 4
is attached to the battery.
̈ Reinstall filter box (୴ page 447).
!
Always connect the starter battery in the or-
der described below. Otherwise, the vehicle’s
electronics could be damaged.
!
Never invert the terminal connections.
!
Make sure the battery has a plug where the
ventilation hose
4 is attached to it.
i
The following procedures must be carried
out following any interruption of battery power
(e.g. due to reconnecting):
ț Reset the automatic exterior mirror fold in
function (
୴ page 99).
ț Set the clock (୴ page 170).
Vehicles with COMAND*: see COMAND op-
erator’s manual.