REMOVAL AND INSTALLATION


caution
  • Before removing the steering wheel assembly and drive’s air bag module, refer to GROUP 52B - Service Precautions and Air Bag Module Clock Spring .
  • After the installation, perform a calibration for the ASC-ECU to learn the steering wheel sensor neutral point (Refer to GROUP 35C - On-vehicle Service - Steering Wheel Sensor Calibration ) <Vehicles with ASC>.
Pre-removal operationSteering wheel straight-ahead position check
 Post-installation operation
  • Steering wheel straight-ahead position check
  • Steering wheel shake check




Removal steps
<<A>>
1.
 Cover

>>B<<
 2.
 Horn connector connection

>>B<<
 3.
 Steering switch connector connection <Vehicles with steering switch connector>
<<B>>
 >>B<<
 4.
 Driver’s air bag module connector connection


5.
 Steering wheel voice control switch cover
<<C>>
6.
 Steering wheel voice control switch <Vehicles with voice control switch>
<<C>>
7.
 Driver’s air bag module


8.
 Steering wheel upper cover (RH) <Vehicles without cruise control switch>


9.
 Steering wheel cruise control switch <Vehicles with cruise control switch>


10.
 Steering wheel upper cover (LH) <Vehicles without steering wheel audio remote control switch>


11.
 Steering wheel audio remote control switch <Vehicles with steering wheel audio remote control switch>


12.
 Nut
<<D>>
 >>A<<
 13.
 Steering wheel assembly

REMOVAL SERVICE POINTS

<<A>> COVER REMOVAL

Insert special tool ornament remover (MB990784) into the notch shown in the figure, and remove the cover.

<<B>> DRIVER’S AIR BAG MODULE CONNECTOR REMOVAL

Slide the outer housing of the driver’s air bag module connector in the arrow direction shown, and disconnect the connector

<<C>> DRIVER’S AIR BAG MODULE REMOVAL
caution
  • Never use an electric tester to diagnose the air bag module circuit. Never attempt to disassemble the air bag module.
  • Be sure to store the removed air bag module in a clean and dry place with a pad surface facing upward.
  • When discarding the air bag module, discard after deploying the air bag as specified in the service procedure. (Refer to GROUP 52B - Air bag module and seat belt pre-tensioner disposal procedures ).

<<D>> STEERING WHEEL ASSEMBLY REMOVAL
1.
caution Use the special tool to remove the steering wheel since the steering column collision absorbing mechanism may be damaged.
Position the steering wheel in a straight ahead direction.

2.Using special tool steering wheel puller (MB990803), remove the steering wheel assembly as shown in the figure.

INSTALLATION SERVICE POINTS

>>A<< STEERING WHEEL ASSEMBLY INSTALLATION
1.
caution When installing the steering wheel assembly and air bag module, do not trap the clock spring harness.
After checking the clock spring centre alignment is already performed, install the steering wheel assembly.
2.After the installation, check that there is no abnormality when the steering wheel is fully turned to left and right.

>>B<< DRIVER’S AIR BAG MODULE CONNECTOR CONNECTION/HORN CONNECTOR CONNECTION/STEERING SWITCH CONNECTOR CONNECTION
Connect the connector securely and route the harnesses not to lie off the cover hole.