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Check condition
Fig. 321 Vehicle battery: open the cover/acid level indicator
Read and observe
and
The battery condition is checked regularly by a specialist garage as part of the
inspection service.
Check the acid level
For car batteries with acid level indicator, use the colouration of the display to
check the acid level. In vehicle batteries with the designation "AGM" there is
no acid level examination.
Depending on the equipment, the vehicle battery may be provided with a cov-
er, this can be opened in the direction of arrow
Air bubbles can influence the colour of the indicator. Therefore, carefully
knock on the display
» Fig. 321
- .
Black colour - electrolyte level is correct.
Colourless or light yellow colour - electrolyte level too low, the battery must
be replaced.
Battery discharge
Frequent short journeys will not sufficiently recharge the car battery.
The battery capacity decreases at low temperatures.
If the vehicle is not used for longer than 3 to 4 weeks, disconnect the negative
terminal or charge the battery constantly with a very low charging current.
276
General Maintenance
on page 275 first.
» Fig. 321
- .
Charging
Read and observe
and
Only charge the vehicle battery when the ignition and all consumers are
switched off.
Refer to the instructions of the charger manufacturer.
Charging
›
For vehicles with START-STOP system or auxiliary heating, connect the
terminal of the charger to the
charger to the earth point of the engine
›
For vehicles without START-STOP system or auxiliary heating, connect the
terminals of the charger to the corresponding battery poles
).
›
Plug the mains cable of the charger into the power socket and switch on the
device.
›
After charging is complete: switch off the charger and remove the mains ca-
ble from the power socket.
›
Disconnect the terminals of the charger from the vehicle battery.
A charging current of 0.1 multiple of the total vehicle battery capacity (or low-
er) must be used until full charging is achieved.
WARNING
When charging the vehicle battery, hydrogen is released - risk of explo-
■
sion. An explosion can be caused from sparks or connection or releasing
the cable plug while the ignition is on.
The so-called "quick charging" of the vehicle battery is dangerous and re-
■
quires a special charger and specialist knowledge. Therefore, have "Quick
loading" carried out by a specialist garage.
Disconnect/reconnect and change
Read and observe
and
The new vehicle battery must have the same capacity, voltage, current and the
same size as the original Battery.
We recommend you have the battery replaced by a specialist garage.
on page 275 first.
pole of the battery, the terminal of the
» page
289.
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to . to
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