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:
Calibrating the compass
Make sure that there is
sufficient space for
you to drive in a circle without impeding the
remaining traffic.
In order to calibrate the compass correctly,
observe the following points:
• ca ...
Center console, lower section
9 Cup holder
Ashtray
Cigarette lighter
Power socket
10 Audio/COMAND controller
11 Level control
12 Downhill Speed Regulation
(vehicles with AIRMATIC package)
13 Adaptive Damping System
...
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
(vehicles with front fog lamps), or turn the
light s ...