See also:

Windshield washer system and headlamp cleaning system
The washer fluid reservoir is used for both the windshield washer system and the headlamp cleaning system. Vehicle components and their service products must match. You should, therefore ...

Important notes on use
To function properly, BlueTEC exhaust gas aftertreatment must be operated with the reducing agent DEF. When the DEF supply has almost run out, the Check Additive See Operator's Manual message ...

System self-test
After you have switched on the ignition, the system carries out a self-diagnosis. WARNING A malfunction in the system has been detected if one of the following conditions occurs:  - ...