See also:

SRS warning lamp
SRS functions are checked regularly when you switch on the ignition and when the engine is running. Therefore, malfunctions can be detected in good time. The SRS warning lamp in the instrume ...

DEF
Important safety notes For BlueTEC vehicles only. DEF is a non-flammable, non-toxic, colorless, odorless and water-soluble fluid. Only use DEF that complies with ISO 22241. Do not add any ...

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 ...