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:
Before changing a fuse
– Park the vehicle and apply the electric
parking brake.
– Switch off all electrical consumers.
– Remove the SmartKey from the ignition
lock.
The fuses are located in various fuse boxes:
- fus ...
Windshield/headlamp cleaning
system
WARNING
Washer solvent/antifreeze is highly
flammable. Do not spill washer solvent/
antifreeze on hot engine parts, because it may ignite and burn. You could be
seriously
burned.
Use MB ...
Activating/deactivating the automatic
folding mirror function
In the Automatic Mirror Folding menu,
you can set the exterior mirrors so that they
automatically fold in when the vehicle is
locked.
To activate/deactivate automatic
mirror folding: selec ...