Purity
Assuring the purity of DEF is particularly important with respect to avoiding malfunctions in the exhaust gas aftertreatment system.
If DEF is pumped out of the DEF tank, e.g.
during repair work, it must not be returned to the tank. The purity of the fluid can no longer be guaranteed.
Impurities in DEF (e.g. due to other
service products, cleaning agents or dust)
lead to:
- increased emission values
- damage to the catalytic converter
- engine damage
- malfunctions in the BlueTEC exhaust gas aftertreatment system
See also:
Displaying real-time traffic reports
If necessary, switch to navigation mode
and show the menu.
Select Traffic in the navigation system
menu bar by turning
the COMAND
controller and press to confirm.
If you see the No traff ...
Important safety notes
WARNING
Ensure that the trunk lid/tailgate is closed
when the engine is running and the vehicle is
in motion. Among other dangers, deadly
carbon monoxide (CO) may enter the vehicle
interi ...
Useful information
This Operator's Manual describes all models and all standard and optional equipment
of your vehicle available at the time of publication of the Operator's Manual. Country-specific
diffe ...