Anti-Theft Alarm (ATA)/Tow-Away Protection/Interior Protection Control Unit, Component Description - GF80.50-P-4131GW

Model 463 (except 463.342)

as of model year 2013 up to model year 2019

with code FZ5 (Anti-theft alarm system)

Model 463 (except 463.342)

as of model year 2013 up to model year 2019

with code FZ8 (Alarm system)

Model 463.342

with code FZ5 (Anti-theft alarm system)

Model 463.342

with code FZ8 (Alarm system)

Location

The ATA [EDW]/tow-away protection/interior protection control unit is located in the overhead control panel control unit (N70).

Shown on model 463.23

Fig 1: Anti-Theft Alarm (ATA)/Tow-Away Protection/Interior Protection Control Unit Component Location - Model 463 (Except 463.342) W/ Codes FZ5 & FZ8 Up To M.Y. 2019 (Shown On Model 463.23)

Courtesy of MERCEDES-BENZ USA

Tasks

The ATA [EDW]/tow-away protection/interior protection control unit has the following tasks:

Reading in of signals
Evaluation of input factors
Output of signals
Transmitting and receiving ultrasonic waves (with code FZ8 (Alarm system))

Reading in of signals

The input factors are read in via the following connections:

Direct line
Alarm system LIN (LIN B14)
Interior CAN (CAN B)

Direct line

In vehicles with code FZ8 (Alarm system), the signals of the following component parts are read in via direct lines:

Left rear window glass breakage sensor (B39)
Right rear window glass breakage sensor (B39/1)
Rear window glass breakage sensor (B39/4) Alarm system LIN

The anti-theft alarm system/tow-away protection/interior protection control unit reads in the signals from the alarm siren (H3/1) (without code ZU7 (national version for Canada) and without code ZU8 (national version for USA)) via the alarm system LIN. Interior CAN

The signals are read in by the anti-theft alarm system/emergency call system button group via the interior CAN. The functions that use these signals are described in the individual function descriptions (see the appropriate block diagram or function schematic).

Evaluation of input factors

The input factors that have been read in are evaluated by the integrated microprocessor and the affected components are then actuated.

Output of signals

The actuation of the components takes place via the following connections:

Alarm system LIN
Interior CAN Alarm system LIN

The anti-theft alarm system/tow-away protection/interior protection control unit actuates the alarm siren (without code ZU7 (national version for Canada) and without code ZU8 (national version for USA)) via the alarm system LIN.

Interior CAN

The signals are transmitted by the anti-theft alarm system/emergency call system button group via the interior CAN. The functions that use these signals are described in the individual function descriptions (see the appropriate block diagram or function schematic).

Transmitting and receiving ultrasonic waves (with code FZ8 (Alarm system))

The ATA [EDW]/tow-away protection/interior protection control unit monitors the vehicle interior for movements by sending and receiving ultrasonic waves.

The anti-theft alarm system/emergency call system button group includes the following components:

Interior protection receiver (N26/6a1)
Left interior protection transmitter (N26/6b1)
Right interior protection transmitter (N26/6b2)

Electric wiring diagram for anti-theft alarm system control unit (ATA [EDW])

PE80.50-P-2101-97ZGA