Brake Pedal Height & Free Play
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Lexus SC 430, 2002 Lexus RX 300, 2002 Lexus LX 470, 2002 Lexus LS 430, and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
- Measure pedal height from floor board to face of pedal pad. See BRAKE PEDAL HEIGHT & FREE PLAY SPECIFICATIONS . If pedal height is incorrect, go to next step.
- On ES 300, IS 300, LS 430 and RX 300, remove undercover panel, lower pad and air duct.
- On GS 300 and GS 430, remove left side under cover, end pad, safety pad and heater to register duct.
- On SC 430, remove instrument lower finish panel.
- On LX 470, remove the scuff plate, cowl side trim, lower No. 1 panel, left lower panel, and No. 2 heater to register duct. See Fig 1. Remove the steering wheel pad, steering wheel lower No. 2 and No. 3 covers, steering wheel, combination switch, column upper and lower covers, steering column assembly and thrust stopper. See appropriate STEERING COLUMNS article in STEERING.
- On all models, disconnect stop light switch harness connector. Loosen stoplight switch lock nut, and remove stoplight switch.
- Loosen brake pedal-to-power brake unit push rod lock nut.
- Adjust pedal height by turning brake pedal push rod.
- Tighten push rod lock nut to specification. See TORQUE SPECIFICATIONS .
- Install stop light switch and connect brake light switch harness connector.
- Push in brake pedal .2-.59" (5-15 mm) and turn stop light switch to lock the nut in position where brake light goes off.
- After installation, push in brake pedal .2-.59" (5-15 mm) and check that brake light illuminates.
- Stop engine. Depress brake pedal several times until power brake unit is depleted. Push brake pedal by hand until a second point of resistance is felt, then measure the difference. Ensure pedal free play is as specified. See BRAKE PEDAL HEIGHT & FREE PLAY SPECIFICATIONS .
- If incorrect, check stop light switch clearance. See STOP LIGHT SWITCH CLEARANCE . If clearance is OK, trouble shoot brake system.
- Install steering and instrument panel components as necessary.
BRAKE PEDAL HEIGHT & FREE PLAY SPECIFICATIONS
| Application | In. (mm) | |
|---|---|---|
| Brake Pedal Height | ||
| ES 300 | 5.673-6.067 (144.1-154.1) | |
| IS 300 & SC 430 | 6.063-6.457 (154-164) | |
| GS 300 & GS 430 | 5.906-6.299 (150-160) | |
| LS 430 | 6.654-7.047 (169-179) | |
| LX 470 | 7.232-7.626 (183.7-193.7) | |
| RX 300 | 7.598-7.992 (193.0-203.0) | |
| Brake Pedal Free Play | ||
| ES 300, IS 300, RX 300 & LX 470 | 0.04-0.24 (1-6) | |
| GS 300, GS 430, LS 430 & SC 430 | .008-.079 (.2-2) | |
STOP LIGHT SWITCH CLEARANCE
| Application | In. (mm) |
|---|---|
| ES 300 | .02-.098 (.5-2.5) |
| IS 300 | .059-.098 (1.5-2.5) |
| GS 300 & GS 430 | .02-.1 (.2-2) |
| LX 470 | .075 (1.9) |
| SC 430 | .02-.094 (.5-2.4) |