Vehicle battery and fuses › Using the jump-starting cable 199
Tap on the indicator
before testing, to clear
air bubbles.
Stop driving!
Stop the engine and seek the help of a specialist
garage.
›
›
›
Black colour - the acid
level is OK.
Colourless or pale yel-
low colour - acid level
is too low, the battery
must be replaced.
▶
▶
Disconnecting, connecting and replacing
CAUTION
Risk of fire!
Do not mix up the connection cables.
▶
Requirements for the charging process
✓ Ignition off.
✓ Power consumers switched off.
Disconnect
Close the electric boot lid, the tilting/sliding sun-
›
roof, all windows and the electric sun blind.
Switch off the ignition and any connected power
consumers.
›
Vehicle battery charging process
To charge the vehicle battery fully, set a charging
current of max. of 0.1 times the battery capacity.
Disconnect the
nal.
terminal and then the
termi-
›
Connect the
nal of the charger to
termi-
›
Connect
the
terminal of the
Connect the
terminal and then the
terminal.
›
vehicle battery.
After switching on ignition, the indicator lights illumi-
nate briefly. from the isolation box.
Connect the termi-
nal of the charger to
the earth point A .
›
›
If, after a short distance, one of the above-men-
tioned indicator lights does not go out, seek the
help of a specialist garage.
›
Plug the charger's
power cable into the
socket and switch on
the device.
Commission these functions after disconnecting
and connecting the vehicle battery
Clock setting » page 62.
Window operation » page 30.
Operation of the tilting/sliding sunroof » page 31.
Sun blind » page 32.
Earth point
▶
▶
▶
▶
After charging, switch off the charger and unplug
the power cable from the socket.
Disconnect the charger terminals from the vehicle
battery.
›
›
Changing
WARNING
The new vehicle battery must have the same param-
eters as the original battery. Have the replacement
carried out by a specialist garage.
Risk of explosion!
During charging, hydrogen is released. An explo-
sion can also be caused by sparks, for example,
when disconnecting or loosening the cable con-
nector.
▶
Using the jump-starting cable
What you should be mindful of
Never charge a frozen or thawed vehicle battery.
▶
▶
Do not carry out the so-called quick charging of
the vehicle battery yourself, but have it carried out
by a specialist garage.
WARNING
Risk of explosion and chemical burns!
NOTICE
Do not jump start with the battery of another vehi-
cle under the following conditions.
▶
A flat vehicle battery can freeze easily!
▶
The discharged vehicle battery is frozen. A dis-
charged vehicle battery can freeze at tempera-
tures just below 0°C.
The battery acid level is too low » page 198.
Troubleshooting
▶
Vehicle battery does not charge while the engine is
running
Use jump leads with a sufficient cross section and in-
sulated terminal clamps.
or
illuminates
Seek the help of a specialist garage.
›
The rated voltage of both batteries must be 12V. The
capacity (in Ah) of the charging battery must not be
significantly lower than the capacity of the dis-
charged battery.
Engine fault
or
illuminates
English 
