Triggering alarm with panic switch, function - GF80.50-P-3014SXU

MODEL 221.0 /1, 216.3 with CODE (494) USA version with CODE (551) Anti-theft alarm system (ATA [EDW]) with CODE (763) Radio remote control with panic switch up to Model Year 8

Shown on model 221

Fig 1: Triggering Alarm With Panic Switch Function Diagram

Courtesy of MERCEDES-BENZ USA

Activating panic alarm

Function requirements:

Circuit 15C OFF (no circuit switched)

Function

When the panic alarm button is actuated on the transmitter key for approx. 2 s, it transmits a signal to the rear SAM control unit via the antenna amplifier module and then on to the EIS control unit.

Simultaneously with the radio signal, an infrared signal is transmitted to the driver door infrared sensor (precise aiming required). This signal is read in by the corresponding door control unit and transferred to the EIS control unit.

In both cases, the EIS control unit checks the access authorization of the transmitter key. If the access authorization is valid, the EIS control unit transmits the command "Activate panic alarm" to the rear SAM control unit, which then actuates a visual and acoustic alarm.

The duration of the visual and acoustic panic alarm is equal. On vehicles with panic alarm, the interior illumination is not activated as it is the case with the ATA.

The panic alarm has priority over the ATA. Deactivate panic alarm

Function

The panic alarm is interrupted when the panic alarm button on the transmitter key is actuated briefly. The function sequence is identical to the panic alarm activation function.

The panic alarm function and the alarm duration are programmable.

Function sequence when panic alarm and ATA are actuated simultaneously

If both alarms are actuated, the panic alarm with the higher priority is activated and the ATA is suppressed. The ATA remains activated in the background.

If the panic alarm is completed or interrupted, the ATA suppressed up to that time is activated. A coding variant in the rear SAM control unit offers an exception, with which the ATA is interrupted as soon as the panic alarm is terminated.

Rear window antenna module component description	A2/12 Vehicles without code (494) USA version or without code (498) Japan version	GF82.62-P-3131SX
	Vehicles with code (498) Japan version	GF82.62-P-3131SXJ
	Vehicles with code (494) USA version	GF82.62-P-3131SXU
Transmitter key, component description	A8/1	GF80.57-P-6010SX
Infrared remote control receiver, component description	B58	GF80.30-P-6000SX
Alarm signal horn, component description	H3/1	GF80.50-P-6020SX
Driver-side SAM control unit with fuse and relay module, component description	N10/1	GF54.21-P-6010SX
Rear SAM control unit with fuse and relay module, component description	N10/2	GF54.21-P-6030SX
Driver-side front door control unit, component description	Model 216	GF72.29-P-6000SC
Passenger-side front door control unit, component description	Model 216	GF72.29-P-6010SC
Electronic ignition/starter switch control unit (EIS), component description	N73	GF80.57-P-6000SX