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:
Trailer towing
PARKTRONIC is deactivated for the rear area
when you establish an electrical connection
between your vehicle and a trailer.
Fold in the ball coupling if the trailer tow
hitch is not requir ...
Tire size designation, load-bearingcapacity and speed index
1 Tire width
2 Nominal aspect ratio in %
3 Tire code
4 Rim diameter
5 Load bearing index
6 Tire speed rating
Tire data is vehicle-specific and may
deviate from the data in the example.
Ge ...
Cleaning the steering wheel and gear or
selector lever
•► Thoroughly wipe with a damp cloth or use
leather care agents that have been
recommended and approved by Mercedes-
Benz. ...