ATA/Tow-Away Protection/Interior Protection Control Unit, Component Description - GF80.50-P-4131RF

Model 205

up to model year 2019

with code 551 (Anti-theft warning system)

with code 882 (Interior protection and tow-away protection)

Model 253 (except 253.99)

up to model year 2020

with code 551 (Anti-theft warning system)

with code 882 (Interior protection and tow-away protection)

Model 205.0/1/2/3, Model 253 shown on model 205.0

Fig 1: Tow-Away Protection/Interior Protection Control Unit Component Location - Model 253 (Shown On Model 205.0)

Courtesy of MERCEDES-BENZ USA

Location

The ATA [EDW]/two-away protection/interior protection control unit is attached to the overhead control panel control unit (N70).

Model 205.4

Courtesy of MERCEDES-BENZ USA

Location

The ATA [EDW]/tow-away protection/interior protection control unit is located in the center of the center console below the cup holder.

Tasks

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

Reading in of sensors and signals
Evaluation of input factors
Output of signals
Sending and receiving ultrasonic waves (model 205.0/1/2/3, Model 253)
Recognizing changes of vehicle inclination

Reading in of sensors and signals

The input factors are read in via the following connections:

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

Direct line

The ATA/tow-away protection/interior protection control unit reads in the signals of the following component parts via the direct lines:

Left rear glass breakage sensor (B39) (model 205.2, Model 253 with code 882 (Interior protection and tow-away protection))
Right rear glass breakage sensor (B39/1) (model 205.2, Model 253 with code 882 (Interior protection and tow-away protection))

Alarm system LIN

The ATA/tow-away protection/interior protection control unit reads in the signals of the following components over the alarm system LIN:

Alarm siren (H3/1)
Left front door interior protection sensor (B44/1) (model 205.4)
Right front door interior protection sensor (B44/2) (model 205.4)
Left rear passenger compartment interior protection sensor (B44/3) (model 205.4)
Right rear passenger compartment protection sensor (B44/4) (model 205.4)
Rear window glass breakage sensor (B39/4) (model 205.2, Model 253 with code 882 (Interior protection and tow-away protection))

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 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 relevant components are then actuated.

Output of signals

The signals are issued through the following connections:

Alarm system LIN
Interior CAN

Alarm system LIN

The ATA/tow-away protection/interior protection control unit transmits the request for alarm output to the alarm siren 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 appropriate block diagram or function schematic).

Sending and receiving ultrasonic waves (model 205.0/1/2/3, Model 253)

The ATA/tow-away protection/interior protection control unit monitors the vehicle interior for motion by transmitting 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)

Recognizing changes of vehicle inclination

If the inclination sensor integrated into the ATA/tow-away protection/interior protection control unit recognizes an alarm-relevant change of inclination, an alarm is output.

Wiring diagram for overhead control panel (OCP) control unit	Model 205 (except 205.4) up to model year 2019 with code 551 (Anti-theft warning system) with code 882 (Interior protection and tow-away protection) Control unit N70 Model 253 (except 253.99) up to model year 2020 with code 551 (Anti-theft warning system) with code 882 (Interior protection and tow-away protection) Control unit N70	PE54.21-P-2107-97FBA
Wiring diagram of anti-theft alarm system (ATA)	Model 205.4 up to model year 2019 with code 551 (Anti-theft warning system) with code 882 (Interior protection and tow-away protection) N26/3	PE80.50-P-2000-97FBA
Wiring Diagram Of Anti-Theft Alarm System (ATA)	Model 253 (except 253.99) as of model year 2020 with code 551 (Anti-theft warning system) with code P54 (Anti-Theft Protection package) Model 253.99 as of model year 2019 with code 551 (Anti-theft warning system) with code 9O1 (Fuel cell pre-installation)	PE80.50-P-2000-97FCA
Wiring diagram of anti-theft alarm system (ATA)	Model 205.4 up to model year 2019 with code 551 (Anti-theft warning system) with code 882 (Interior protection and tow-away protection) N26/3	PE80.50-P-2000-97FBA