Removing and installing steering column electronics control unit J527 — AUDI

🧭 Before you start

Start the replacement function on the tester if the unit is being renewed, then pull the column fully down and back. Remove the driver airbag, steering wheel and column trim, undo the bolt, release the hooks and connectors, and detach the slip ring assembly from the switch module. Refit everything with fasteners and connectors fully engaged, reinstall trim, wheel and airbag, and calibrate the steering angle sender if the return ring was renewed.

Fits: Audi A5 Cabriolet (8F)

Don't miss

• Wheels straight ahead: the return ring with slip ring must come off and go on in centre position.
• Release the connectors with a screwdriver at the retaining hooks only, as shown, to avoid breaking them.
• Check every fastener and connector is fully engaged before the trim goes back.
• Calibrate the steering angle sender after renewing the return ring.
• Use the tester's replace-control-unit function when fitting a new J527.
• Treat the driver airbag as a pyrotechnic component when storing it during the job.

Written for this job from the workshop steps below · TorqFix editorial.

📋 Procedure

1. If control unit is to be renewed, select the "“Replace control unit”" function for appropriate control unit in . [Note: Return ring with slip ring must be removed/installed in centre position (wheels in straight ahead position).]
2. Move steering wheel down and to rear as far as possible, making use of full range of steering column adjuster.
3. Remove driver airbag General body repairs, interior69Airbag (driver side); Exploded view - airbag (driver side).
4. Remove steering wheel Running gear, axles, steering48Steering wheel; Removing and installing steering wheel.
5. Remove steering column trim General body repairs, interior68Shelves / trim panels; Exploded view - steering column trim.

6. Remove bolt (1).
7. Carefully release retaining hooks (arrows) and pull airbag coil connector and return ring with slip ring F138(item 2) off steering column switch module (3).
8. Release electrical connectors at airbag coil connector and return ring with slip ring F138(item 3); to do so, position screwdriver at retaining hooks (2) and (4), as shown, and carefully release connectors (1) and (5) in direction of (arrows A).
9. Detach airbag coil connector and return ring with slip ring F138 at steering column switch module.
10. Make sure all fasteners and the electrical connectors are properly engaged.
11. Install steering column trim General body repairs, interior68Shelves / trim panels; Exploded view - steering column trim.
12. Install steering wheel Running gear, axles, steering48Steering wheel; Removing and installing steering wheel.
13. Install driver airbag General body repairs, interior69Airbag (driver side); Exploded view of airbag (driver side).
14. After renewing return ring with slip ring, perform calibration of steering angle sender .
15. If control unit is to be renewed, select the "“Replace control unit”" function for appropriate control unit in .

Other AUDI procedures

• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures
• Servicing 6-speed manual gearbox 0A3, four-wheel drive — Servicing gearbox cover
• Servicing 6-speed manual gearbox 0A3, four-wheel drive — Removing and installing differential
• Servicing 6-speed manual gearbox 0A2, front-wheel drive — Removing and installing differential
• Renewing needle bearing for dual-mass flywheel – Audi
• Renewing flange shaft oil seal (left-side) with gearbox removed from vehicle, front-wheel drive