See also:

Additives
Only use DEF in accordance with ISO 22241. Do not use additives with DEF and do not dilute DEF with water. This may destroy the BlueTEC exhaust gas aftertreatment system. ...

Vehicle
Activating/deactivating the automatic door locking feature If you select the Auto. Door Locks function, the vehicle is centrally locked above a speed of around 9 mph (15 km/h). For further in ...

Cleaning the exhaust tail pipes
Impurities combined with the effects of road grit and corrosive environmental factors may cause flash rust to form on the surface. You can restore the original shine of the exhaust tail pipe b ...