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:
Problems with the rear window
defroster
The rear window defroster has deactivated
itself prematurely or cannot be activated.
- Switch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery ...
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 differences are ...
Downshifting
Briefly press the selector lever
to the left towards D–.
or
Pull the left-hand steering wheel
paddle shifter.
The automatic transmission shifts down to the next gear.
If you brake the vehic ...
