Checking and refilling levels
Checking and refilling
levels
12-volt battery
Check the electrolyte level
Fig.11 Hybrid vehicles (PHEV): location of the
battery in the luggage compartment
Access to the 12 volt battery
The 12-volt battery is located in the engine
compartment (conventional vehicles) or in the
luggage compartment (PHEV hybrid vehicles).
Troubleshooting
✓ Valid only for: conventional vehicles.
Alternator fault
The control lamp lights up in RED.
Stop driving! Safely stop the vehicle at
the next opportunity. The vehicle battery stops
charging from the alternator while driving As
the battery gradually discharges, switch o all
electrical devices that are not essential.
●
Switch o the ignition and any electrical
consumers that are not required.
●
Have the electrical system checked by a
qualified workshop.
Energy management
Optimisation of the starting capacity
Battery diagnostics
Battery diagnostics determine the status of the
battery on an ongoing basis. The battery volt-
age, current and temperature are monitored for
this purpose. This is used to determine the bat-
tery's charge level and eciency.
Discharged battery
Vehicle stationary for a long period of time
If you do not drive the vehicle for a few days
or weeks, adjustments will be made to reduce
consumption or the electrical devices will be
deactivated one by one. This reduces energy
consumption and the starting capacity is main-
tained for longer. Some comfort functions may
not be available under certain circumstances.
The comfort functions will be available again
when the ignition is switched on and the engine
is started.
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