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:
Brake fluid level
If you notice that the brake fluid level in
the brake fluid reservoir has fallen to the
MIN mark or less, check the brake system
immediately for leaks. Also check the
thickness of the brake l ...
Setting the airflow
Turn the SmartKey to position
2 in the
ignition lock.
To increase/reduce: press
the or
button.
You can use automatic climate
control to
set the airflow in the rear compartment
sep ...
Text reader settings
Setting the text reader speed
Select Vehicle by turning
the
COMAND controller and press to
confirm.
Select System and press to
confirm.
Select Text Reader and press
to
confirm. ...