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.
Example For Control Module Identification
Depending upon build level (program level) the control module can indicate a different control module identification, to that shown in the example.
- 01P 927 733 Q: Part No.
- AG4 Transmission 01P: 4-speed automatic transmission 01P
- 2937:EPROM (program level)
- Coding 00000: is not required at present.
- WSC 00000: V.A.G 1551 dealership number with which the last coding was performed.
Indicated on display:
- Control module does not answer! HELP
By pressing the HELP key, a list of possible malfunction causes is printed out.
After eliminating the possible causes of malfunctions, again enter the address word 02 for "transmission electronics" and confirm.
If "Control module does not answer!" again appears:
Indicated on display:
- Control module does not answer! HELP
Check control module voltage supply.
Perform test step 1, of Electrical check. See ELECTRICAL CHECK under TRANSMISSION: ELECTRICAL CHECKS.
Check wiring connections to diagnostic sockets. See appropriate SYSTEM WIRING DIAGRAM article in ELECTRICAL.
See DTC table, under DTC 65535 control module malfunctioning! See DIAGNOSTIC TROUBLE CODE (DTC) TABLE .
Press "right arrow" key.
Indicated on display:
- Rapid data transfer HELP
- Select function XX
After the HELP key is pressed, a list of the possible functions is printed out.
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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.