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:
Important safety notes
ATTENTION ASSIST helps you during long,
monotonous journeys such as on freeways
and interstate highways. It is active in the
range between 50 mph (80 km/h) and
112 mph (180 km/h).
If ATTENTIO ...
Activating the HOLD function
•► Make sure that the activation conditions
are met.
•► Depress the brake pedal.
•► Quickly depress the brake pedal further
until HOLD display 1 appears in the
multifunctio ...
Socket in the cargo compartment
The socket is not suitable for operating
the tire inflation compressor.
► Lift up the cover of socket 1. ...
