Audi A4 Infotainment Emergency call SOS call
Applies to: vehicles with ERA-GLONASS emergency call function
The ERA-GLONASS test mode involves, among other things, a test emergency call to a test control centre.
The test mode can be started within the first 20 seconds after the ignition is switched on. Briefly press the emergency call button behind the cover -1- Fig.  ten times after switching on the ignition.
Note
The test mode must only be started by a qualified technician.