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:
"Coupling up a trailer" function
This function is only available on vehicles with
a trailer tow hitch.
1 Center of the vehicle on the red guide line
approximately 10 in (0.25 m) away from
the rear area
2 Center of the vehic ...
Driving systems
Display messages
Possible causes/consequences and
Solutions
The red distance warning lamp lights up while the vehicle is in motion.
A warning tone also sounds.
R ...
Emergency Tensioning Devices, beltforce limiters
The seat belts for the front seats are equipped
with ETDs/belt buckle tensioners and seat
belt force limiters. The outer seat belts in the
second row of seats are equipped with ETDs and seat belt f ...