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REMOVAL AND INSTALLATION
 
 
caution
  • Before removing the steering wheel and driver's air bag module assembly (Refer to GROUP 52B - Service Precautions and Driver’s Air Bag Module and 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 ).
Pre-removal Operation
Steering Wheel Straight-ahead Position Check
Post-installation Operation
  • Steering Wheel Straight-ahead Position Check
  • Steering Wheel Shake Check
Removal steps
>>C<<1.Driver's air bag module (GROUP 52B - Driver’s Air Bag Module and Clock Spring )
2.Steering wheel nut
<<A>>>>C<<3.Steering wheel assembly
<<B>>4.Steering wheel remote control switch
<<B>>5.Cruise control switch
>>B<<·•Steering wheel remote control switch wiring harness
>>B<<·•Steering heater-ECU wiring harness <Vehicles with heated steering wheel>
<<C>>>>A<<6.Steering heater-ECU <Vehicles with heated steering wheel>
<<D>>>>A<<·•Heater element connector connection <Vehicles with heated steering wheel>
7.Steering wheel
 
 
REMOVAL SERVICE POINTS
 
 
<<A>> STEERING WHEEL ASSEMBLY REMOVAL
1. Position the steering wheel in a straight ahead position.
2.
cautionUse the special tool to remove the steering wheel since the steering column collision adsorbing mechanism may be damaged.
Use special tool steering wheel puller (MB990803) to remove the steering wheel.
 

 
 
<<B>> STEERING WHEEL REMOTE CONTROL SWITCH/CRUISE CONTROL SWITCH REMOVAL
cautionTo remove the steering wheel remote control switch or cruise control switch, remove the left or right side only. If fail to observe this, the steering lower cover will fall down, thus damaging it.

 
 
<<C>> STEERING HEATER-ECU REMOVAL
cautionRemove only the left side of steering wheel remote control switch. If fail to observe this, the steering lower cover will fall down, thus damaging it.
Loosen the tapping screws behind the steering wheel, and then slide the steering wheel lower cover away from the steering wheel to allow sufficient clearance to remove the ECU mounting screws.
 
 
<<D>> HEATER ELEMENT CONNECTOR CONNECTION REMOVAL
caution
  • To remove the steering heater-ECU, disconnect the heater element connector carefully to avoid damage to the heater element.
  • Do not remove the lower cover completely as the heater element is adhered to the lower cover by using an adhesive tape. Also be careful not to peel off the adhesive tape.
 
 
 
INSTALLATION SERVICE POINTS
 
 
>>A<< HEATER ELEMENT CONNECTOR CONNECTION INSTALLATION
cautionTo installing the steering heater-ECU, reconnect the heater element connector carefully to avoid damage to the heater element.
 
 
>>B<< STEERING HEATER-ECU WIRING HARNESS/STEERING WHEEL REMOTE CONTROL SWITCH WIRING HARNESS/CRUISE CONTROL SWITCH WIRING HARNESS INSTALLATION
Route the steering heater-ECU wiring harness, the steering wheel remote control switch and the cruise control switch wiring harness as shown.
 

 
 
>>C<< STEERING WHEEL ASSEMBLY/DRIVER'S AIR BAG MODULE INSTALLATION
1.
cautionWhen installing the steering wheel assembly and air bag module, do not trap the clock spring harness.
After centering the clock spring (Refer to 52B - Driver’s air bag module and clock spring ).
2. After checking that the clock spring center alignment is already performed, install the steering wheel assembly so that its boss part is aligned with the rib of the clock spring slowly.
3. Install the driver's airbag module.
4. After the installation, check that there is no abnormality when the steering wheel is fully turned to left and right.