12 volt vehicle battery and fuses › 12 volt vehicle battery 205
Tap on the indicator
before testing, to clear
air bubbles.
During charging, hydrogen is released. An explo-
sion can also be caused by sparks, for example,
when disconnecting or loosening the cable con-
nector.
Never charge a frozen or thawed 12 volt vehicle
battery.
Do not carry out the so-called quick charging of
the 12 volt vehicle battery yourself, but have it car-
ried out by a specialist garage.
▶
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Black colour - the acid
level is OK.
Colourless or pale yel-
low colour - acid level
is too low, the 12 volt
vehicle battery must
be replaced.
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▶
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NOTICE
A flat 12 volt vehicle battery can freeze easily!
Requirements for charging a 12 volt vehicle bat-
tery
✓ Ignition off
✓ Power consumers switched off
Troubleshooting
The 12 volt vehicle battery does not charge while
the engine is running
12 volt vehicle battery charging
To charge the 12 volt vehicle battery fully, set a
charging current of max. of 0.1 times the battery ca-
pacity.
or
illuminates
Seek the help of a specialist garage.
›
Engine fault
or
Stop driving!
illuminates
›
Stop the engine and seek the help of a specialist
garage.
›
Disconnecting, connecting and replacing
CAUTION
Risk of fire!
Do not mix up the connection cables.
Engine compartment: Earth point and -pole for battery
charging
▶
A
+
Earth point
Depending on the trim level, the 12 volt vehicle bat-
tery is located in the engine compartment or in the
boot.
-Pole for battery charging (applies to vehicles
with a 12-volt vehicle battery in the luggage
compartment)
Remove the cover of
›
Connect the
terminal of the 12 volt vehicle battery.
terminal of the charger to the
›
the 12 volt vehicle bat-
tery using the handle
A .
For vehicles with a 12 volt vehicle battery in the
luggage compartment, the -pole for battery
charging is in the engine compartment under a
protective cap.
Connect the terminal of the charger to the earth
point A .
›
Plug the charger's power cable into the socket and
switch on the device.
After charging, switch off the charger and unplug
the power cable from the socket.
Disconnect the charger terminals from the 12 volt
vehicle battery.
Access to the 12 volt vehi-
cle battery in the boot
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›
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Disconnecting
Close the electric boot lid, the tilting/sliding sun-
roof, all windows and the electric sunblind.
›
Switch off the ignition and any connected power
consumers.
›
Close the cover cap of the - pole for battery
charging and lock it into place.
Disconnect the
nal.
terminal and then the
termi-
›
WARNING
Risk of explosion!
English 
