How to replace the actuator assembly on a Toyota Prius?
Remove the cabin heat auxiliary water pump from it’s mount, but do not disconnect the hoses. Remove the actuator mounting bolts. Disconnect all the brake lines from the actuator assembly. Remove the actuator assembly. Install the new actuator assembly in the reverse order. Reinstall and bleed the inverter. Bleed your brakes with Techstream.
What kind of problem is Toyota Prius brake accuator?
There 75.00 75.00 is noise coming from the passenger side when applying the brakes. 0.00 COM005 RP TECHNICIAN NOTES: C1256 ACCUMULATOR LOW PRESSURE. 0.00 0.00 C1391 ABNORMAL LEAK OF PRESSURE. THE ABS BRAKE ACTUATOR HAS FAILED.
What makes a Toyota Prius make a noise?
TSB-0032-16 STATES THAT THIS IS A COMMON ISSUE CAUSED BY AN INTERNAL BRAKE FLUID LEAK IN THE BRAKE ACTUATOR. THE FRONT BRAKE PADS LOOK ALMOST NEW, AND THE ROTORS ARE IN GOOD SHAPE. THE REAR SHOES AND DRUMS ARE IN GOOD SHAPE AS WELL. THE NOISE THE CUSTOMER IS HEARING IS THE ABS ENGAGING.
What is the trouble code on a Toyota Prius?
C1256 Low-Pressure Accumulator Trouble Code The trouble code for your Prius sets when the pressure inside the brake unit can no longer be maintained. The trouble code C1256 is set, and there is a long buzzer from your car warning you that brake failure has happened.
What happens when your brake actuator goes bad?
The most common scenario we hear from our customers experiencing brake actuator failure is that some or all of the dash warning lights will appear, but no noticeable symptoms occur right away. If the warnings are ignored, a long persistent buzzer sound may come and go.
What is the diagnostic code for brake actuator failure?
The most common diagnostic code for brake actuator failure is C1256 . When C1256 code is logged the car will enter a fail-safe mode which will disable antilock brakes, electronic braking force distribution and regenerative braking.
How does a brake actuator and accumulator work?
The brake actuator/accumulator assembly consists of a high pressure motor, a pressure tank and valves that open and close to direct brake fluid to the wheels as needed. As time progresses small leaks in the system will cause the pressure in the tank to drop which results in the motor having to run more often to maintain the pressure.