Remove/install steering wheel

AR46.10-P-0100MCC

Remove/install steering wheel

26.03.2019

Model

451.3/4

1

Lower steering column trim

2

Steering wheel

3

Screw

A45

Fanfare horns and airbag clock spring contact

A45x1

Clock spring contact and airbag connector

 Warning

Risk of injury caused by performing testing or repair work on airbag or emergency tensioning retractor units.

Store airbag units with deployment side facing up; do not expose to temperatures greater than 100 °C. When working on these units, disconnect the power supply.

AS91.00-Z-0001-01A

Topical note

Notes on performing repair, body work and welding on vehicles with airbags and RTE units

AH91.00-P-0002-01M

Legal requirements on handling and storing airbags and emergency tensioning retractor units

AH91.00-P-0004-01A

 

Remove/install

1

Move steering and turn signal switch to center position


The steering and turn signal switch must be in the center position for removal and installation of the steering wheel (2).
Otherwise the fanfare horns and airbag clock spring contact (A45) and the turn signal canceling cam can be damaged.
Furthermore, it will not be possible to calibrate the steering angle sensor in the fanfare horns and airbag clock spring contact (A45).

2

Disconnect battery ground line

AR54.10-P-0003MCC

3

Remove lower steering column trim (1)

AR68.30-P-2000MCC

4

Disconnect clock spring contact and airbag connector (A45x1)

5

Remove screw (3) from under steering wheel (2)


The steering wheel (2) may only be turned if the screw (3) is securely tightened.
Otherwise the fanfare horns and airbag clock spring contact (A45) can be damaged.

 The screw (3) remains on the steering wheel (2).

 Bolt, steering wheel to steering shaft

*BA46.10-P-1001-02D

6

Remove steering wheel (2)


The steering wheel (2) may only be turned if the screw (3) is securely tightened.
Otherwise the fanfare horns and airbag clock spring contact (A45) can be damaged.

 When the steering wheel (2) is removed from the steering column, the fanfare horns and airbag clock spring contact (A45) is blocked to prevent inadvertent turning.

 Installation: Attach the steering wheel (2) so that the locking pins (arrows A) are in alignment with the mounts (arrows B) of the fanfare horns and airbag clock spring contact (A45).
Before installing the steering wheel (2), make sure that the front wheels are in the straight-ahead position.

7

Remove clock spring contact

Only when replacing steering wheel (2).

AR46.10-P-0200MCC

8

Install in the reverse order

 Steering wheel

Number

Designation

Model 451.3/4

BA46.10-P-1001-02D

Bolt, steering wheel to steering shaft

Nm

27