The ignition is switched on.
The starter battery is sufficiently charged.
If restraint systems such as airbags or seat belt tensioners have been activated after an accident, both the Mercedes-Benz emergency call system as well as the 112 emergency call system (EU eCall) can initiate an emergency call automatically.
A voice connection is established with the emergency call centre.
A message with accident data is transmitted to the emergency call centre.
The SOS button in the overhead control panel flashes until the emergency call is finished.
If no connection can be made to the public emergency services, a corresponding message appears in the display.
Remain in the vehicle if the road and traffic conditions permit you to do so until a voice connection is established with the emergency call centre.
On the basis of the call, the emergency call centre decides whether it is necessary to call rescue teams and/or the police to the accident site.
If no vehicle occupant answers, an ambulance is sent to the vehicle immediately.