Removing and installing engine control unit with no ant-theft protection — VW

🧭 Before you start

Fits: VW Polo 9N (2001–2009)

🔧 Engine codes this applies to

📋 Procedure

1. Switch off ignition.
2. Switch off ignition.
3. Release connector on engine control unit and pull off connector.
4. Press clips (arrows A) outwards and pull engine control unit out to side (B).
5. Insert new engine control unit and press it to the left.

6. Fit connector and lock in position.
7. If engine control unit is renewed, clear learnt values and adapt engine control unit "“Guided functions”".
8. Read fault memory, repair faults as necessary and then clear fault memory "“Guided fault finding”".
9. The readiness code will have to be created once the fault memory has been deleted.
10. Carry out a road test.
11. Read control unit fault memory again.

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