Displaying service messages
•► Switch on the ignition.
•► Press 
on the steering wheel
to select the Serv. menu.
•► Press 
to select the ASSYST
PLUS submenu and press 
to confirm.
The service due date appears in the multifunction display.
See also:
Parking the vehicle for a long period
If you leave the vehicle parked for longer than four weeks, the battery may be
damaged by exhaustive discharge.
Connect a trickle charger.
You can obtain information about trickle chargers ...
Engine
Display messages
Possible causes/consequences and
Solutions
The coolant level is too low.
– Add coolant, observing the warning notes when doing so.
– If coolant needs ...
Activating/deactivating
Turn the SmartKey to position 2
in the ignition lock.
To switch on: press the
button. The indicator lamp in the
button lights up. Airflow and air
distribution are set to automatic mode.
or ...