Removing and installing anti-theft and tilt system control unit — AUDI

🧭 Before you start

Fits: platform codes SF, SG

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• When installing the right ultrasonic sensor for anti-theft alarm system G171 and the left ultrasonic sensor for anti-theft alarm system G170 it is permissible to interchange them.

📋 Procedure

1. ⚠ When removing and installing components that are in view (switches, covers, trims etc.), mask off areas in which tools (plastic wedge, screwdriver) are used to lever out those components using masking tape. — Switch off ignition and all electrical loads, and pull out ignition key.
2. Turn or tilt interior mirror (6) downwards.
3. Open spectacles compartment (3).
4. Remove auxiliary heater operating and display unit E407(1)Parking heater, auxiliary heater82Parking heater/auxiliary heater; Overview of fitting locations - parking/auxiliary heater.
5. Open cover.

6. Remove cover with sliding sunroof adjustment regulator E139.
7. Remove front interior light W1 and front passenger reading light W13 or driver side reading light W19.
8. Open cover with the operating buttons, right ultrasonic sensor for anti-theft alarm system G170 and left ultrasonic sensor for anti-theft alarm system G171(arrows).
9. Remove securing bolts (arrows).
10. Unclip front of roof console (1) on windscreen from roof trim (arrow).
11. Push connector and wire upwards out of retainer (1).
12. Then unclip rear of roof console from roof trim (arrows).
13. Push cover with the operating buttons, left ultrasonic sensor for anti-theft alarm system G170(3) and right ultrasonic sensor for anti-theft alarm system G171(2) into the roof console.
14. ⚠ The roof console (1) now hangs on the wiring harness. Continue working carefully without damaging the mounted parts and cables. — Release and disconnect connector (5) on anti-theft and tilt system control unit J529(4).
15. Remove right ultrasonic sensor for anti-theft alarm system G171(2) and left ultrasonic sensor for anti-theft alarm system G170(3) from their retainers. [Note: When installing the right ultrasonic sensor for anti-theft alarm system G171 and the left ultrasonic sensor for anti-theft alarm system G170 it is permissible to interchange them.]
16. Unclip anti-theft and tilt system control unit J529(4) from its bracket (arrows) on roof console (1).

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