Charging
The 12-volt vehicle battery is automatically charged
when the high-voltage battery is charged.
If required, the 12 volt vehicle battery can be charg-
ed using a 12 volt charger.
Requirements for charging a 12 volt vehicle bat-
tery
✓
Ignition off.
✓
Power consumers switched off.
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.
A
Earth point
+
-pole for charging the 12 volt vehicle battery
The pole of the 12 volt vehicle battery is located in
the engine compartment under the cover of the fuse
box
›
Remove the fuse box cover.
.
›
Connect the terminal of the charger to the
pole for battery charging.
›
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.
›
Fit the fuse box cover and click it into place.
WARNING
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.
▶
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.
NOTICE
A flat 12 volt vehicle battery can freeze easily!
Troubleshooting
Engine fault
illuminates together with
›
Stop driving!
›
Stop the engine and seek the help of a specialist
garage.
Fault in charging of the 12 volt vehicle battery
illuminates together with
›
Stop driving!
›
Turn ignition off and seek the help of a specialist
garage.
12 volt vehicle battery fault
illuminates together with
A message in the display of the instrument
cluster indicating a fault on the 12 volt vehicle bat-
tery or on secondary systems.
›
Seek the help of a specialist garage.
The state of charge of the 12 volt vehicle battery is
insufficient
illuminates together with
A message in the display of the instrument
cluster regarding low charge or discharged 12 volt
vehicle battery.
›
Travel a distance of several kilometres to charge
the 12 volt vehicle battery.
Or:
›
Charge the vehicle using a charger.
Or:
›
Charge the 12 volt vehicle battery with a charger.
Worn 12 volt vehicle battery
illuminates together with
A message in the display of the instrument
cluster regarding exchange of the 12 volt vehicle bat-
tery.
›
Seek the help of a specialist garage.
Disconnecting, connecting and replacing
The 12 volt vehicle battery is located in the luggage
compartment and is not accessible. The 12 volt vehi-
cle battery may only be disconnected and connected
by a specialist company.
Changing
The new 12 volt vehicle battery must have the same
parameters as the original battery. Have the replace-
ment carried out by a specialist garage.
140 12 volt vehicle battery and fuses ›
12 volt vehicle battery