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:
Switching the button lighting on/off
Press button 2 on the remote control.
Depending on the previous status, the
button lighting is switched on or off.
If you do not use the remote control for
about 15 seconds, the button light ...
Service and literature
Your vehicle is covered under the terms of the
warranties printed in the Service and
Warranty Information booklet. Your
authorized Mercedes-Benz Center will
exchange or repair any defective pa ...
Hazard warning lamps
Hazard warning lamps
The hazard warning lamps automatically switch on if:
• an air bag is deployed.
• the vehicle is slowed down severely from a speed of over 45 mph (70 km/h) and
comes to a ha ...