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:
Displaying service messages
Switch on the ignition.
Press or
on the steering wheel to select
the Serv. menu.
Press or
to select the ASSYST PLUS submenu
and press to confirm. The service
due date appears ...
Folding the rear bench seat back
► Pull release catch 3 upwards.
► Fold backrest 2 backwards until it
engages, making sure not to trap the seat
belts while doing so.
► Fold seat cushion 1 backwards and push
u ...
Useful information
This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences ...
