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Thread: 2003 T4R , brake master cylinder, ABS unit kaputt

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10-17-2023, 05:45 AM

AuSeeker

Senior Member

Join Date: Nov 2016

Location: South Carolina

Posts: 4,702

Real Name: Skip

AuSeeker

Senior Member

Join Date: Nov 2016

Location: South Carolina

Posts: 4,702

Real Name: Skip

If the ABS/booster motor is running constantly it's usually either the accumulator and or ABS/booster pump is bad and not building up pressure.

Many people just replace the entire master cylinder/booster assembly just to make sure everything is working, instead of throwing different parts at it until they get it working.

Accumulator part number is 47950-30010 ....link...

2001-2005 Toyota Motor & Pump 47950-30010 | Toyota Parts

Pump and accumulator assembly part number is 47070-30060 ....link...

2003-2009 Toyota 4Runner Power Brake Booster 47070-30060 | Toyota Parts

Complete master cylinder/booster assembly part number is 47050-60010 ...link...

1998-2003 Toyota Actuator Assembly 47050-60010 | Toyota Parts

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