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.
Coding Engine Control Module (TT)
Connect VAS 5051 or equivalent scan tool to Data Link Connector (DLC). DLC is located behind cover under left side of steering column. Turn ignition on. On scan tool, select vehicle system 01 - ENGINE ELECTRONICS. From selection 1, select diagnostic function 07 - CODE CONTROL MODULE. Press "Q" button to confirm input. Following scan tool instructions, access ECM coding information. Enter ECM code as necessary. For ECM coding options, see ENGINE CONTROL MODULE CODING OPTIONS (TT) table.
| Application/Code | Option | |||
|---|---|---|---|---|
| Country/Emissions | ||||
| 07 | (1) USA LEV | |||
| Drive/Additional Functions | ||||
| 4 | Front Wheel Drive Without Electronic Stability Program | |||
| 5 | Front Wheel Drive With Anti-Slip Regulation | |||
| 6 | All Wheel Drive Without Electronic Stability Program | |||
| 7 | All Wheel Drive With Electronic Stability Program | |||
| Transmission | ||||
| 0 | 5-Speed Manual Transmission | |||
| 1 | 6-Speed Manual Transmission | |||
| Vehicle Type | ||||
| 0 | TT | |||
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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.