Traction Control System
WARNING: This page is about a different car, the 2004 Lexus GS 430, 2004 Lexus GS 300, 2003 Lexus GS 430, and 2003 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Do not let brake fluid remain on painted surfaces. Wash it off immediately. With reservoir cap removed, when depressing brake pedal, brake fluid will spray.
- Disconnect 2 hydraulic brake booster harness connectors. Connect Actuator Tester (09990-00150) to hydraulic brake booster side wire harness via Sub-Wire Harness (09990-00480). See Fig 1.
- Connect Red cable of tester to battery positive terminal and Black cable to negative terminal. Turn ignition switch to off position. Depress brake pedal more than 40 times. Turn ignition to ON. Ensure pump stops after 30-40 seconds. If pump does not stop, repeat step.
- Depress brake pedal more than 20 times with ignition on, and bleed right and left front calipers. Hold and depress brake pedal. Bleed right and left rear wheel caliper.
- Turn selector switch of actuator tester to FRONT RH position. Push and hold in MAIN push switch. Depress brake pedal and hold to bleed right front brake caliper. Repeat until there are no air bubbles in fluid.
- Turn selector switch of actuator tester to FRONT LH position. Push and hold in MAIN push switch. Depress brake pedal and hold to bleed left front brake caliper. Repeat until there are no air bubbles in fluid.
- Push and hold in SUB LH and SUB RH switches. Bleed right and left rear brake caliper. Repeat until there are no air bubbles in fluid.
- Disconnect actuator connector and sub-wire harness from actuator. Connect 2 hydraulic brake booster harness connectors. Clear DTC. See CLEARING DTCS in appropriate ABS article.
NOTE:
DO NOT keep MAIN switch pushed in for more than 10 seconds. When operating continuously, release for more than 20 seconds before pushing again.