Brake booster replace/techstream process

+ In for the learning (and probable fate)

 

@ChapmanF knows the ins and outs, hopefully will contribute.

 

For starters, people sometimes get the names mixed up ... which of these did you buy?

 

I don't think there is anything else you need to do after following the long-form bleed procedure in Techstream.

If I've forgotten anything and there is any other initialization to be done, you will near-certainly get a diagnostic code that will tell you to do it, and that won't be a problem, as you'll have Techstream right there.

 

If it wants you to that it will give you the code that says it wants to do that. And there you will be, with Techstream, looking at the code saying it wants to do that, so you will say ok, go ahead, and it will.

 

Our brake booster assembly is leaking so we need to replace it. We have a question on the techstream. Is there a way to do this on our own without having to have Toyota program it? How do I get techstream? Is it really just a cable I buy on Ebay that has the software with it or do I need a username & password? Does it matter if we buy a new assembly or is it better to get one from a used Prius at a junkyard.

 

First, my experience with brake boosters is on a 2012 Prius v, not a 2007. But some information may be better than no feedback.

Techstream software is a hacked version the cable seller gives you a link to access. It is not legal, must run on a windows pc, most often windows 7, generally requires a cryptic registry edit, the instructions are poor and the resulting application has a learning curve of its own. They give you a generic password and tell you to keep it offline. However many report it works.

Personally I let a dealer or equipped mechanic do things like bleeding or calibration procedure if needed.

New is far better than used. Most original boosters will fail. So you could be buying a guaranteed used part that takes two days to install just to have it fail. Or it could fail two months from now. Another issue in my experience is there are at least two different part numbers per year based on things like tire size or model. So the identification of your part number is the starting point followed by the identification of the used part based on its donor car vin.

In a used part scenario, I would put the responsibility on an independent mechanic who sources the parts, installs, bleeds, calibrates and tests with at least a 90 day warranty. Make sure he has done this before. If you have a local parts source with a good return policy like LKQ, your choice may differ.

 

Thank you for the response. We aren't able to pay $2700 to have it fixed at Toyota and we can't find any other shops around here that do that. The car has 185000 miles on it so we aren't wanting to put that much money into it.

 

Search google for hybrid mechanic.