Horn Button ASSY: Replacement

See PRECAUTION )
DISCONNECT BATTERY NEGATIVE TERMINAL (See PRECAUTION )
REMOVE STEERING WHEEL COVER LOWER NO.2
1. Using a screw driver, remove the steering wheel cover lower No.2.
REMOVE STEERING WHEEL COVER LOWER NO.3
1. Using a screw driver, remove the steering wheel cover lower No.3.
REMOVE HORN BUTTON ASSY
1. Place the front wheels facing straight ahead.
2. Using a torx® socket wrench (T30), loosen the 2 torx® screws until the groove along the screw circumference catches on the screw case.
  
  Fig 1: Identifying Screw Case Of Horn Button
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Pull out the horn button assy from the steering wheel assy and support the horn button assy one-handed as shown in Fig 2.
  NOTE: When removing the horn button assy, take care not to pull the airbag wire harness.
4. Using a screwdriver, disconnect the airbag connectors.
5. Disconnect the horn connector.
6. Remove the horn button assy.
  
  Fig 2: Pulling Out Horn Button Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL HORN BUTTON ASSY
1. Support the horn button assy one-handed as shown in Fig 3.
2. Connect the airbag connectors.
3. Connect the horn connector.
4. Install the horn button after confirming that the circumference groove of the torx screws is caught on the screw case.
5. Using a torx® socket wrench (T 30), install the 2 screws.
  Torque: 8.8 N.m (90 kgf.cm, 78 in.lbf)
  
  Fig 3: Installing Horn Button Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT HORN BUTTON ASSY
1. Do a visual check which includes the following item with the horn button assy (with airbag) installed in the vehicle. Check cuts, minute cracks or marked discoloration on the horn button assy top surface and in the grooved portion.
INSPECT SRS WARNING LIGHT (SEE DIAGNOSIS SYSTEM )

Fig 4: Inspecting Horn Button Assy
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002