'98 Lexus ES300 ABS problem??
Has anyone experienced an open circuit in ABS pump actuator? Our '98 ES300 has only 50K miles and we wonder if it is wise to incur this costly repair.
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This is a realtively small fractional HP 12 volt electric motor very much like your windshield wiper drive motor. Since it is being used to produce a very high level of POWER, pressurizing brake fluid to ~3000 PSI, it is highly subject to overheating. Therefore newer systems that rely on this motor for more than ABS functionality (BA/VSC/TC/etc.) will typcially have time limits controlling how long it will be allowed to operate continuously.
ABS adds a tremendous safety factor, especially on a low traction surface.
This problem started when turning and stopping (like into a parking space).
Since replacing the left front axle and cv boot the ocurrences seem more frequent.