Airbag Control Unit, Coding

Airbag Control Unit, Coding Using Scan Tool VAG1551

Coding is only possible when a new control unit is used.

- Connecting scan tool, initiating On Board Diagnostic (OBD).
Scan Tool Connecting and Initial Checks
Initial Inspection and Diagnostic Overview

- Switch on printer with Print button (warning lamp in button lights up).

The airbag warning lamp (K 75) lights up continuously.

- Press keys -1- and -5- (the address word of the vehicle system to be tested "Airbag" is entered with 15).

Indicated on display:


Rapid data transfer Q
15 Airbag


- Confirm entry with the -Q- button.

Indicated on display:


6Q0 909 605 A AIRBAG VW 3-OM V03 ->
Coding 00000 WSC 00066


- Press -> button.

Indicated on display:


Rapid data transfer HELP
Select function XX


- Press keys -0- and -7- (with 07 the function "Code control unit" is selected).

Indicated on display:


Rapid data transfer Q
07 Code control unit


- Confirm entry with the -Q- button.

Indicated on display:


Code control unit
Enter code number XXXXX (0-32000)


- Enter code number according to table:













































- Confirm entry with the -Q- button.

The control unit identification number with the relevant letter index, code number and workshop code is displayed.


6Q0 909 605 A AIRBAG VW 3-OM V03 ->
Coding 12345 WSC 00066


If the contents of the display are as shown then the coding is successful.

If the control unit code number entered is not accepted, then the FAULT and the code number not accepted will be displayed, e.g. 00200:

Indicated on display:


FAULT ->
Coding 00200 not accepted


In this case the control unit has not been programmed with the relevant data for the vehicle. Coding is then not possible. The airbag warning lamp (K 75) will not extinguish and lights up continuously. A check must then be completed to see if the correct control unit for the vehicle has been installed (compare Part No. and letter index), or whether an incorrect code number has been entered.

End output:

- Press -> button.

Indicated on display;


Rapid data transfer HELP
Select function XX


- Press keys -0- and -6- to end the output.
- Confirm entry with the -Q- button.

Indicated on display:


Rapid data transfer Q
06 End output


Airbag warning lamp (K75) must go out after approx. 4 seconds.