Call priority
When service calls are active, e.g. Roadside Assistance or MB Info calls, an emergency call can still be initiated. In this case, an emergency call will take priority and override all other active calls.
The indicator lamp of the respective button
flashes until the call is ended. An emergency
call can only be terminated by the Mercedes-
Benz Customer Assistance Center. All other
calls can be ended by pressing the 
button on the multifunction steering wheel or
the corresponding button for ending a
telephone call on the COMAND telephone
keypad.
See also:
Vehicles with automatic transmission
Apply the parking brake firmly.
Shift the transmission to position
P.
Using the SmartKey
Turn the SmartKey to position 0
in the ignition lock and remove it.
The immobilizer is activated.
...
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 halt.
To switch ...
DEF
Important safety notes
For BlueTEC vehicles only.
DEF is a non-flammable, non-toxic, colorless,
odorless and water-soluble fluid.
Only use DEF that complies with
ISO 22241. Do not add any ...