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Bleeding brakes on Highlander hybrid

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01 Jan 2019 09:34 #25842 by Tutti57
Bleeding brakes on Highlander hybrid was created by Tutti57
So I made a boo boo last night with my wife's car and didn't check to see if there was a special procedure to bleed these brakes, and there is! Well I skipped an important step and now am stuck.

You are supposed to remove the abs relays so it doesn't pump air in the accumulator. Now I have air in the accumulator. The manual says to use a pressure bleeder, which I have at work, but I'm at home without it and trying to get the car ready for work tomorrow. I'm not sure a vacuum style would work in this case. There is a bleeder valve bon top of the accumulator. Parts stores are open today and I have the pump part of the tool, just not the adapter I need. I was trying to locate a cap that I could turn into an adapter but it's a dealer part.

Any ideas?

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01 Jan 2019 11:12 #25848 by Andy.MacFadyen
Replied by Andy.MacFadyen on topic Bleeding brakes on Highlander hybrid
A quick bodge the might work is to open the bleed nipple and push the pads back.

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01 Jan 2019 11:23 #25851 by Tyler
Replied by Tyler on topic Bleeding brakes on Highlander hybrid
I went digging in the Troubleshooter for more info, and I see what you mean about the ABS relays. :silly:

So, now that you know to remove them, can you not just perform the bleed procedure as normal? There's also options in the scanner for actuator and master cylinder removal. Maybe one of those is the ticket?

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01 Jan 2019 12:25 #25852 by Tutti57
Replied by Tutti57 on topic Bleeding brakes on Highlander hybrid
Yeah, now that I'm reading it again, I don't think I have air in the actuator since that reservoir never got low to allow air in the hose. I think I just have to follow the procedure as Tyler said, starting over. I may have to do the front and back.

I'll report back later. Thanks!

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01 Jan 2019 18:06 #25861 by Tutti57
Replied by Tutti57 on topic Bleeding brakes on Highlander hybrid
All is good. I'm not sure what was going on before. The bleeding procedure was the same except at the end you have to zero down the accumulator, a scan tool function.

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01 Jan 2019 20:51 #25865 by Tyler
Replied by Tyler on topic Bleeding brakes on Highlander hybrid
It's a goofy hydraulic system, that's what was going on! :silly: Well done.

What scanner did you use? Just for anyone searching later.

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09 Feb 2019 09:57 #26902 by Tutti57
Replied by Tutti57 on topic Bleeding brakes on Highlander hybrid
Sorry, I missed this one. I used a scanpad 071 by launch.

I've actually switched my flush/bleed style over to a vacuum set up. I have a fluid evacuation pump that you can manually pump or use shop air and I put a brake Bleeder attachment on the end to suck brake fluid and it works awesome.

I'm thinking that this all would have been avoided if I used that since pressing the brake pedal is what activates tge weird stuff on this car.



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09 Feb 2019 11:31 #26911 by Tyler
Replied by Tyler on topic Bleeding brakes on Highlander hybrid
No worries!

Tutti57 wrote: I've actually switched my flush/bleed style over to a vacuum set up. I have a fluid evacuation pump that you can manually pump or use shop air and I put a brake Bleeder attachment on the end to suck brake fluid and it works awesome.


This is exactly what I do. :cheer: Though, I usually find that I have to give each wheel one manual bleed each, just to get the last of the air out? Is this your experience, or do I just suck at it?

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