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Practical hints
Batteries
Starter battery
̈ Connect the switched-off charging de-
vice to the terminals of the starter bat-
tery. Observe the operating
instructions in the manual for the
charging device while doing so.
Reinstalling starter battery
̈ Install starter battery in engine com-
partment.
̈ Swing retaining bar down.
Reconnecting starter battery
̈ Make sure that the consumer battery in
the trunk is correctly installed and con-
nected.
̈ Turn SmartKey in starter switch to po-
sition 0 and remove.
̈ Connect the positive lead and fasten its
cover 2 (
୴ page 704).
̈ Connect negative lead 1
(
୴ page 704).
̈ Attach ventilation tube.
̈ Switch on the ignition (୴ page 365).
̈ Start the engine (୴ page 406).
̈ Check vehicle functions.
!
Only use charging devices with a maximum
charging voltage of 14.8 V.
Warning! G
During the charge procedure, there is a risk
of acid burns due to gases escaping from
the battery. Do not bend over the battery
during the charge procedure.
!
The battery and the battery ventilation hose
must always be securely installed when the vehi-
cle is in operation.
!
Always connect the starter battery in the or-
der described below. Otherwise, the vehicle’s
electronics could be damaged.
Warning! G
Do not drive without a properly installed and
connected consumer battery.
Have any work on the consumer battery car-
ried out by an authorized Mercedes-Benz
Center.
!
Never invert the terminal connections.
!
Make sure that the battery has a plug where
the ventilation tube is attached to it.