Removing and installing front speed sensor lines, Bosch 5.7 — VW

🧭 Before you start

Fits: VW Polo 9N (2001–2009)

• Special tools named: VAS 1978

📋 Procedure

1. Note or request radio code in vehicles with coded radio unit.
2. Disconnect battery Electrical system27Disconnecting and reconnecting battery.
3. Release connector on control unit (arrow (1)) and pull it off (arrow (2)).
4. Release cover cap from multi-pin connector with a screwdriver and remove.
5. Release secondary lock (violet) in direction of arrow with a small screwdriver.

6. Push out relevant contacts with a release tool from wiring harness repair set VAS 1978.
7. Disconnect connector from speed sensor wire and speed sensor.
8. For vehicles with brake wear indicator separate the connector (1).
9. Unclip line from bracket (2).
10. Remove defective speed sensor wiring and guide in new speed sensor wiring.
11. Connect speed sensor to speed sensor wire.
12. Clip in speed sensor wire (arrows).
13. Insert brake wear indicator connector into bracket on suspension strut.
14. Guide contact into connector housing.
15. Push individual wiring seal in onto stop with an insertion tool from VAS 1978.
16. Secure contacts with secondary lock and fit cover cap for multi-pin connector.
17. Release secondary lock (violet) in direction of arrow with a small screwdriver.

Other VW procedures

• Removing engine · 41 torque figures
• Removing and installing camshaft – VW Golf Cabriolet · 47 torque figures
• Adjusting valve timing – VW Passat B5 · 83 torque figures
• Removing and installing camshafts – VW Passat B6 · 39 torque figures
• Removing and installing coolant pump · 53 torque figures