Parking Brake System: Adjustment

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT PARKING BRAKE PEDAL TRAVEL
1. Fully depress the parking brake pedal to engage the parking brake.
2. Depress the pedal again to disengage the parking brake
3. Slowly depress the parking brake pedal using the specified force, and count the number of clicks.
  Parking brake pedal travel:
  
  7 to 9 clicks at 300 N (31 kgf, 67.5 lbf)
  
  If the parking brake travel is not as specified, adjust the parking brake shoe clearance and parking brake travel.
  
  Fig 1: Inspecting Parking Brake Pedal Travel
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
ADJUST PARKING BRAKE SHOE CLEARANCE AND PARKING BRAKE PEDAL TRAVEL
1. Remove the No. 1 instrument panel under cover sub-assembly (See REMOVAL )
2. Completely release the parking brake pedal.
3. Loosen the lock nut and No. 1 wire adjusting nut to completely release the parking brake cable
4. Remove the rear wheel.
5. Temporarily install the hub nuts.
6. Remove the shoe adjusting hole plug
  
  Fig 2: Identifying Lock Nut And No. 1 Wire Adjusting Nut
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Using a screwdriver, turn the shoe adjuster and expand the shoe until the disc locks
8. Turn and contract the shoe adjuster until the disc can rotate smoothly
  Standard:
  
  Return 7 notches.
  
  Fig 3: Turning Shoe Adjuster
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. Check that there is no brake drag against the shoe
10. Install the shoe adjusting hole plug
11. Turn the adjusting nut until the parking brake pedal travel is corrected to be within the specified range
  Parking brake pedal travel:
  
  7 to 9 notches at 300 N (31 kgf, 67.5 lbf)
12. Using a wrench or an equivalent tool, hold the adjusting nut and tighten the lock nut
  Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf)
13. Operate the parking brake pedal 3 to 4 times, and check the parking brake pedal travel
14. Check that there is no brake drag against the shoe.
15. Remove the hub nuts
16. Install the rear wheel
  Torque: 103 N*m (1050 kgf*cm, 76 ft.*lbf)
17. Install the No. 1 instrument panel under cover sub-assembly (See INSTALLATION )
INSPECT BRAKE WARNING LIGHT
1. When operating the parking brake pedal, check that the brake warning light illuminates
Standard:

The brake warning light always illuminates at the first click.