Removing and installing lock carrier - vehicles with high-voltage system — AUDI

🧭 Before you start

Fits: Audi A3 (8V, 2012–2020); platform code 85

• Opens: coolant, refrigerant (A/C)

📋 Procedure

1. ⚠ Note safety precautions when working on high-voltage vehicles . — De-energise high-voltage system 93De-energising high-voltage system.
2. Remove charging socket 93Charging socket; Exploded view - charging socket.
3. Discharge refrigerant circuit Air conditioner with refrigerant R134a.
4. Detach refrigerant lines from condenser Heating, air conditioning87Refrigerant circuit; Detaching and attaching refrigerant lines at condenser.
5. Drain coolant 19Cooling system/coolant; Draining and filling cooling system.

6. Remove headlights Electrical system94Headlights; Removing and installing headlights.
7. Unplug electrical connector (arrow).
8. Lift retaining clip (arrow) and disconnect coolant hose (top right) from water radiator for charge air cooling circuit.
9. Unfasten hose clip (1) and detach air hose.
10. Unscrew bolt (2) (left and right).
11. Unclip cowl at lock carrier and detach.
12. Lift retaining clip (arrow) and disconnect coolant hose (top left) from radiator.
13. Unplug electrical connectors at bonnet locks (left and right) and move clear.
14. Detach bonnet lock cable at coupling unit and move clear at lock carrier .
15. ⚠ Before working on pyrotechnic components (e.g. unplugging the electrical connector) the mechanic must discharge static electricity by briefly touching the door striker plate, or similar. — Unplug electrical connector (1) at crash sensor (3).
16. To do so, pull out and press down connector locking element (2)(arrow) and unplug electrical connector (1) at crash sensor.
17. Unplug electrical connector (1) at ambient temperature sensor G17(item 3).
18. Move clear electrical wiring harness at lock carrier. [Note: Ignore (item 2).]
19. Unscrew bolt (arrow) (left and right).
20. Unscrew bolt (2) and detach horn with bracket.
21. Have a second mechanic hold lock carrier in position and unscrew bolts (arrows).
22. Detach lock carrier together with a second mechanic. [Note: Ignore (item 1).]
23. If lock carrier is to be renewed, also remove the following components:
24. Fill with coolant 19Cooling system/coolant; Draining and filling cooling system.
25. ⚠ Note safety precautions when working on high-voltage vehicles . — Re-energise high-voltage system 93Re-energising high-voltage system.

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