ChaosOrion

OK,

So after a seemingly benighn problem of the VSC/ABS/BRAKE lights coming on and the buzzer last week, My Power Brakes have now taken a dump completely.

Is there any friggin way of telling if the power brake booster or some other electronic device told the booster to go out?

The brakes worked absoltely fine until it went out without notice (no probs while driving on freeway)

Is the brake booster powered by a hydraulic motor or by standard vacume from the engine?

At 65 MPH coming off the freeway they went out, so I really had to hammer the brake pedal down even to stop...had my wife been driving, I would be at the hospital looking at a broken nose due to the airbag when she would have hit the car in front. I almost did.

Thank you for any help or responses

DaveGS4

iTrader: (2)

Don't mess around with your brakes, IMO take it to the dealer asap. If it were mine, I'd have it towed there.

rominl

iTrader: (4)

yeah, brakes is something i won't really mess with unless i absolutely know tons about it. i say dealer time. it's too much about safety to give up imho

ChaosOrion

I took it to the Dealer....

I am told the entire Master Cylinder Unit, including the ABS unit, Motor, Power Booster, etc must be replaced....$1800 in parts alone....

They said the Cylinder itself holds presure, but that "somewhere" in that system the presure is being reduced....

Why in the world would Toyota design something where all of those items would need to be replaced in a single unit?

Cant I replace one part of it?

kola

iTrader: (1)

sound like similar situation with mine......i went to 2 different mechanic (1 is the dealer) and both told me my hydraulic brake booster assembly need to replace. talk about bad luck...you know how rare this stuffs failed. there goes my mod for bodykit