See also:

Important notes on use
To function properly, BlueTEC exhaust gas aftertreatment must be operated with the reducing agent DEF. Adding DEF is one of the tasks performed during maintenance. Under normal operating condi ...

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 the acoustic locking verification signal
If you activate the Acoustic Lock Feedb. function, an audible signal sounds depending on the vehicle's date of manufacture: • when locking or • once when unlocking and three times when loc ...