Front

Front wheel sensor, replacement
Special tools: 115 8147
Preparations
- Ignition off.
- Remove wheel.
Removing sensor





Note: Clean sensor and connector carefully before removing them.

- Remove sensor mounting bolt and pull sensor out.
- Remove connector.

Installing sensor





- Clean sensor seat free of dust and rust so sensor ends up in right position relative to pulse wheel.
- Brush any dirt off of pulse wheel. Use a soft brush.
- Install sensor and tighten bolt to 10 Nm (7.5 ft. lbs.).
- Install connector.

Installing wheel





- Check that brake disc and rim contact surfaces are clean
- Grease hub center guide for rim with anti-rust agent 116 1038-3.
- Install wheel.
- Install bolts hand tight. Then tighten them in star pattern to 110 Nm (80 ft. lbs.). If tightening with nut runner, use torque socket 115 8147.

Note: Tightening bolts in star pattern to specific torque settings is important to prevent stresses in the brake disc.

Operational checks





- Read off any DTCs posted in control module and erase them.
- Quit DTM by switching off ignition.
- Test-drive car and check that ABS warning indicator goes out.
- Read off DTCs and check that DTC 1-1-1 appears.
- Quit DTM by switching off ignition.