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Removing
Remove the battery box cover.
#
Disconnect the negative terminal first, and
#
then disconnect the positive terminal.
Detach the connecting cable between the
#
batteries.
Unscrew screws
1
from brackets 2.
#
Remove both brackets 2.
#
Remove the batteries.
#
Fitting
Insert the batteries.
#
Insert both brackets 2.
#
Screw screws
1
into brackets 2.
#
Reconnect the connecting cable between the
#
batteries.
Reconnect the positive terminal first, and
#
then reconnect the negative terminal.
Replace the battery box cover.
#
Information on maintenance and care of the
battery
Parking up the vehicle for an extended time
period and storage
* NOTE Battery discharge caused by quies‐
cent current consumers
During idle periods the battery may be dis‐
charged due to quiescent current consumers.
This can cause damage to the battery.
During non-operational periods of over a
#
week, disconnect the negative terminal
on the battery.
* NOTE Damage to the battery due to too
low a voltage
If the battery voltage drops below 12.1 V, the
battery is damaged and must be replaced.
Maintenance and care 333
Remove the batteries for non-opera‐
#
tional periods of over a month.
Store the batteries in a dry place and at
#
temperatures between 0 °C and 30 °C.
Keep the battery voltage constant at
#
12.6 V.
Charge the battery when the no-load voltage is
under 12.6 V. This ensures that the vehicle can
always be started.
If you park up your vehicle for longer than three
weeks, observe the notes on parking up the vehi‐
cle (
page 336).
/
When storing batteries, comply with all safety
regulations, such as operating instructions, regu‐
lations concerning hazardous materials, environ‐
mental protection measures, work safety and
accident prevention regulations.
Battery replacement and operating life
* NOTE Damage to the batteries due to
direct current drain
Connecting consumers directly to the battery
pole causes the battery sensor to calculate
incorrectly.
This causes an uncontrolled battery discharge
and both batteries may be damaged.
Do not connect any consumers directly
#
to the battery pole.
Avoid the battery becoming fully discharged. This
can significantly reduce the operating life of the
battery.
Long battery service life can be achieved by
keeping the batteries adequately charged.
Mercedes-Benz recommends the following when
replacing the batteries:
always replace both batteries
R
use the same type of battery
R
If you use another type of battery, have the
battery type set with a diagnostic device by a
qualified specialist workshop.
use batteries of the same age
R
Do not combine old and new batteries.
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