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:
Low-beam headlamps
► To switch on the low-beam headlamps:
turn the SmartKey in the ignition lock to
position 2 or start the engine.
► Turn the light switch to
.
The indicator lamp in the
instru ...
Xenon bulbs
If your vehicle is equipped with Xenon bulbs,
you can recognize this by the following: the
cone of light from the Xenon bulbs moves
from the top to the bottom and back again
when you start the ...
Function buttons
The COMAND function buttons allow you to
select a main function directly.
1 Function button for roller sunblind
2 Function button for radio and CD/DVD or SD card
3 Back button
4 Lumbar s ...