The Mercedes-Benz emergency call system can help to decisively reduce the time between an accident and the arrival of emergency services at the site of the accident. It helps locate an accident site in places that are difficult to access.
The emergency call can be made automatically More or manually More. Only make emergency calls if you or others are in need of rescue. Do not make an emergency call in the event of a breakdown or a similar situation.
SOS READY: eCall available
SOS NOT READY: the ignition is not on or eCall is not available.
During an active emergency call, 
appears in the display.
You can find more information on the regional availability of eCall at: Mercedes-Benz emergency call system
If there is a malfunction in the emergency call system (e.g. a fault with the speaker, microphone, airbag, SOS button), a corresponding message appears in the multifunction display of the instrument cluster.