Volkswagen Workshop Service and Repair Manuals

If the appropriate code for the vehicle is not displayed or if the control unit has been renewed, the control unit must be coded as follows.

Special tools, testers, measuring instruments and auxiliary items required

• ◆ Fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3

Work sequence

• ‒ Connect fault reader V.A.G 1551 (V.A.G 1552) and select engine electronics control unit with the "Address word" 01. When doing this the ignition must be switched on.
  (Connecting fault reader and selecting engine electronics control unit .)

• ‒ Press keys 0 and 7 for the function "Code control unit" and confirm entry with Q key.

• ‒ Enter the appropriate code number for this vehicle and confirm with Q key.