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:
Tires
Display messages
USA only:
The yellow tire pressure
monitor warning lamp
(pressure loss/
malfunction) is lit.
Possible causes/consequences and ►
Solutions
Risk of accident
The tire ...
AMG displays
Press
or
on the steering wheel
to select the AMG menu.
1 Digital speedometer
2 Gear indicator
3 Upshift indicator
4 Engine oil temperature
5 Coolant temperature
Upshift indicator UP 3 i ...
SmartKey
SmartKey
0 To remove the SmartKey
Vehicles with automatic transmission: shift the transmission to position P
1 Power supply for some consumers, such as the windshield wipers
2 Ignition (power su ...