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:
Rear fog lamp
To switch on the rear fog
lamp: turn the SmartKey in the ignition lock to position 2 or start
the engine.
Turn the light switch to
or
or
.
If the light switch is set to or
, the rear fo ...
Showing the distance display
This function is only available with
DISTRONIC PLUS.
– Press the or
button on the
steering wheel to select the DriveAssist
menu.
– Press the or
button to select
Distance Display.
– Pr ...
Switching the windshield wipers on/off
WARNING
Wiper blades are components that are subject
to wear and tear. Replace the wiper blades
twice a year, preferably in the spring and fall.
Otherwise the windshield will not be wiped
pr ...
