Display of TELE AID status, function - GF82.95-P-2015SXR

MODEL 221.0 /1 as of 1.1.06 with CODE (494) USA version up to Model Year 8

MODEL 221.0 /1 with CODE (389) Mobile phone preinstallation with universal interface, USA/Canada up to Model Year 8

MODEL 216.3 with CODE (494) USA version up to Model Year 8

The state display in the SOS push-button switch (S93/3) serves for checking the function of the Telematic Alarm Identification on Demand (emergency call system) (TELE AID).

Switch-on characteristics

Every time TELE AID is switched on, the state display of the SOS push-button switch comes on for 4 s and thus signals TELE AID readiness. If there is no fault, the state display of the SOS push-button switch goes out after 4 s.

Fault behavior

A TELE AID error is present if the state display of the SOS push-button does not go out 4 s after switching on or if it comes on at a later time. In the event of a fault, a fault message appears in the multifunction display (A1p13) of the instrument cluster (A1).

Triggering a TELE AID telediagnosis

When a TELE AID telediagnosis has been triggered, the state display of the SOS push-button flashes at a frequency of approx. 1 Hz. In addition, a state message appears in the multifunction display of the instrument cluster and in the COMAND display (A40/8). If it was not possible to carry out TELE AID telediagnosis, the state display of the SOS push-button switch is illuminated without interruption.

Furthermore, a fault message appears in the multifunction display of the instrument cluster. When a voice connection is established, the state display of the SOS push-button switch returns to the status it was in before a TELE AID telediagnosis was triggered. A status message appears in the instrument cluster of the multifunction display and in the COMAND display.

If the TELE AID is in diagnostic mode, the state display of the SOS push-button switch also starts to flash on and off.

Continuous illumination of the state display of the SOS push-button switch can have the following causes:

Power supply too low
No or wrong subscriber identification module (SIM) card installed
Communication with restraint system control unit (N2/7) interrupted
Communication error with the ESP control unit (N47-5)
Error in SOS push-button switch
Error in Global Positioning System (GPS) antenna system
Reception interference (emergency call system left backup antenna (A2/54), emergency call system right backup antenna (A2/55) or telephone and GPS roof antenna (A2/49) (on model 221) or telephone and GPS antenna (A2/49) (on model 216)
Vehicle is not authorized or is in the progress of authorization
Memory fault in emergency call system control unit (N123/4)
Personal Identification Number (PIN) has not been stored in the emergency call system control unit by the user or at the factory
Integrated telephone components in emergency call system control unit faulty

The emergency call system control unit can be coded using STAR DIAGNOSIS so that despite missing authorization neither the state displays of the SOS push-button switch light up, nor the corresponding messages are shown in the instrument cluster of the multifunction display and in the COMAND display. Deactivation of the status display must be confirmed by the customer to the dealer, in writing, on a preprinted form.

State displays

Fig 1: Identifying SOS Push-button Switch Timing Chart

Courtesy of MERCEDES-BENZ USA

The state displays provide the driver with an overview of the TELE AID status. This can be seen by the state display of the SOS push-button switch either flashing on and off or being illuminated continuously.

GPS antenna splitter, component description		GF82.62-P-3129SXU
Telephone and GPS roof antenna component description	Model 221.0/1 as of 1.1.06 up to 31.8.06 with code (494) USA version	GF82.62-P-4119SXR
Telephone and GPS roof antenna component description	Model 221.0/1 as of 1.9.06 with code (494) USA version Model 221.0/1 with code (389) Mobile phone preinstallation with universal interface, USA/ Canada Model 216.3	GF82.62-P-4119SXX
Frequency switchover control unit, component description		GF82.62-P-4204SXU
SOS switch, component description		GF82.95-P-3210SXU
Emergency call system control unit, component description		GF82.95-P-3212SXR
Emergency call antenna splitter component description		GF82.95-P-4001SXU
Emergency call system backup antennas component description		GF82.95-P-4002SXU
Restraint systems control unit, component description		GF91.60-P-4048SX