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:
PRE-SAFE® Brake
PRE-SAFE® Brake is only available in vehicles
with DISTRONIC PLUS.
Observe the "Important safety
notes"
section.
PRE-SAFE® Brake can help you to minimize
the risk of a frontal col ...
High-beam headlamps
- To switch on the high-beam headlamps:
turn the SmartKey in the ignition lock to
position 2 or start the engine.
- Turn the light switch to or
or
.
- Press the combination switch beyond the ...
Important safety notes
You will find an illustration of the instrument
cluster in the "At a glance".
WARNING
A driver's attention to the road and traffic
conditions must always be his/her primary
focus wh ...