Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLKSWAGEN1999GTI (1W1) V6-2.8L (AAA)REPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTRADIO, STEREO, AND COMPACT DISCTESTING AND INSPECTIONCODING CONTROL MODULE/RADIO (FUNCTION 07)
1999 Volkswagen GTI (1W1) V6-2.8L (AAA)
Coding Control Module/Radio (Function 07)
1999 Volkswagen GTI (1W1) V6-2.8L (AAA)SECTION Coding Control Module/Radio (Function 07)
Use this function to code the radio with the various equipment variations available.
Coding:
- Connect VAG 1551 Scan Tool (ST), input address word 56 "Radio" and then press -> button, until "Select function XX" is shown in display. Connecting VAG 1551 Scan Tool
Indicated on display (select function):
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -7- to select function 07 "Code control module".
- Press -Q- button to confirm input.
- Indicated on display:
Coding control module
Enter code number XXXXX (0-32000)
Coding Possibilities:
- Check/enter applicable code number from code table according to model and equipment particulars.
XX Model
00 Golf/Jetta
07 Cabrio
XXX System designation
400 without CD changer, with regular antenna
401 without CD changer, with amplified antenna
402 with CD changer and regular antenna
403 with CD changer and amplified antenna
Coding example: 00400 = Golf/Jetta without CD changer, with regular antenna (no GTI/GLX).
Indicated on display:
Coding control module Q
Enter code number 00400 (0-32000)
- Press -Q- button to confirm input.
Indicated on display (select function):
Rapid data transfer HELP
Select function XX
- End output (function 06).
Coding:
- Connect VAG 1551 Scan Tool (ST), input address word 56 "Radio" and then press -> button, until "Select function XX" is shown in display. Connecting VAG 1551 Scan Tool
Indicated on display (select function):
Rapid data transfer HELP
Select function XX
- Press buttons -0- and -7- to select function 07 "Code control module".
- Press -Q- button to confirm input.
- Indicated on display:
Coding control module
Enter code number XXXXX (0-32000)
Coding Possibilities:
- Check/enter applicable code number from code table according to model and equipment particulars.
XX Model
00 Golf/Jetta
07 Cabrio
XXX System designation
400 without CD changer, with regular antenna
401 without CD changer, with amplified antenna
402 with CD changer and regular antenna
403 with CD changer and amplified antenna
Coding example: 00400 = Golf/Jetta without CD changer, with regular antenna (no GTI/GLX).
Indicated on display:
Coding control module Q
Enter code number 00400 (0-32000)
- Press -Q- button to confirm input.
Indicated on display (select function):
Rapid data transfer HELP
Select function XX
- End output (function 06).
RENDER: 1.0x
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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.