NOTE: When supplied, the control module is pre-coded according to the vehicle equipment. The coding is performed with the VAG 1551 scan tool.

Connect scan tool. See Figure .
Initiate On Board Diagnostic (OBD). See INITIATING ON BOARD DIAGNOSTIC (OBD) under RETRIEVING DIAGNOSTIC TROUBLE CODES.
Press buttons "0" and "7" (with 07 the function "Code control module" is selected).
Confirm entry with the "Q" button.
Enter code number according to Fig 1 .

Fig 1: Coding Convenience System Control Module (From June 2001)
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Confirm entry with the "Q" button. The control module identification number will be displayed with the appropriate index letter, the code number and the workshop code. if the contents of the display are as shown then the coding is successful.
NOTE: If the code number entered is not accepted by the control module, the previous coding will appear in the display. If this happens, a check must then be completed to see if the correct control module for the vehicle has been installed (compare part number and letter index), or whether an incorrect code number has been entered. Then repeat coding.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Coding Convenience System Control Module