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yes replaced both due to 2 different clicking sounds from the actuator posted here. Can’t rule out the accumulator although likely the actuator....
Tricky points on brake master cylinder and accumulator/pump replacement Basic Background on the 2 parts Master cylinder assembly is also...
Update: Actuator + Accumulator/Pump came in, installed and bled. Car brakes perfect. Pump comes on a lot less frequent and much shorter...
Yes, probably means Apply, I just automatically thought it was Accumulator since its pressure source :) Definitely make sense :) Thanks
Here are basic understanding of the brake hydraulic circuits for gen3 Prius for future reference. Fed Toyota's operation theory/diagnostic...
Techstream recording on clicking noise that can be felt on all 4 brake lines at a stop with foot on brake. Accumulator is getting recharged...
Additional Clicking Sound (2 different ones) Both clicks are reproducible by ACC mode (just push power button once without stepping on brake)...
Update Its 1.5 month since first post, clicking sound more frequent now braking at a stop. And pump is cycling more frequently now (every...
Looking at the accumulator pressure recharge on the 2nd graph, looks to be ~3s. BTW, the Audi tranny pump (similar motor size as Prius accumulator...
Decided to record some data today (2011 Prius II, 151k miles). Here is accumulator pressure without touching brakes and pressing brakes 4x. Car...
Cool thx! I see ~$750-$800 at some Toyota dealers selling online parts and of course wait for their frequent 25% off + free ship :) So we'll see...
Opened up a common no name brand TPMS from China. This one didn't copy Pacific Industries perfectly but in the general shape. Internal components...
Thanks its been awhile but I recall the actuator is kind of a sealed unit. I'll run techstream later and see if any per brake line sensor to look...
BTW, the reason for making blank ID TPMS seems to be 2 reasons 1 Clone the ID for a set of winter wheels so easy swap without messing with ECU...
Thanks! Will bring a stethoscope to the test and see if can pin point click to any brake lines can get access to.
Good idea, I'll check this more carefully. Familiar with Prius running accumulator pump when first open the driver door in garage. I don't recall...
On Autel program Gen 3 Prius ECU I can confirm Autel TS508WF scanned all 4 of my Pacific Industries TPMS purchase a couple of years ago ($40/ea...
Pacific Industries sold by Denso on Amazon for $40+ each has preset IDs and marked on casing. So of course these can be programmed by techstream....
2011 150k Very faint clicks when at a stop from brake actuator. Had wife pull the car into drive way, gear in D, foot on brake, popped the hood...
This is just a guess but seems reasonable? Manufacturer (where based, doesn't matter where TPMS is manufactured. Mainly design + QC. Like Apple...
