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Unfortunately I no longer have the boards :( Anyhow, sounds like you are familiar with inspection method. I was just surprised factory sprayed on...
Thanks for the repair attempt history. Indeed 3rd world parts from Japan in local currency aren't going to be much lower than US and probably...
No business for me. Just curiosity :) Others are welcomed to pursue. I guess tons of these getting thrown away.
I also used MG Chem 419D from Amazon but didn't clean the board. Also attached pic of the MS board and its conformal appears to be sprayed on....
Actuator Repair Was curious why no one repairs these failed units (Simpler ABS units usually have mail in order repair services and issue seems...
Sorry I wasn't very clear. The sharp corners I tested were top corners of larger and taller surface mounted capacitors : 1206. On Tesla MS, a pair...
Very cool. Thanks for the insightful reply :) Condensation / moisture issues has attacked MS at multiple places... even the cabin heater. I guess...
@mudder Great Li battery engineering. I have background in Tesla Model S (MS) battery pack HW design issues/repairs and basic understand of its...
Follow up with a graph of working actuator behavior after replacement. Car in IG-ON mode (press power button 2x without foot on brake) Followed...
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...
