hey i have a 1998 gs300 about 130,xxx miles past couple weeks i notice my brake fluid was leaking i was not sure i took it to mechanic he checked everything like brake line and stuff and then finally he said i need to replace that whole unit and also my brake pedal almost touching the ground whole unit used with installation about $800 i was like wow i need your opinion guys tell me what to do thanks
Lexus Test Driver
yeah that master cylinder is not cheap by any means. I think retail at the lexus dealer is like $1500. See if you can goto a yard and find one. I've seen some on eBay a while back for like $400. Best of luck.. 
im going to be doing this next on my GS. i noticed after my last brake change, the pedal began to feel soft. there isnt any leaking, so i assume the seals are all gone.
sewell makes a brake master cylinder rebuild kit. however in your case, you said your fluid is leaking and the level in the resevoir is dropping, so you will need to replace the whole unit.
$800 sounds a bit high, but then if using original Lexus parts, then its on the money. a brake master cylinder i assume is around 400, and the remainer is labour and fluids. the mechanic will need to replace the brake master cylinder, BUT also need to do a brake bleed flush as it will introduce air into the system. thus, im guessing the amount of labout for just the brake master cylinder is around 1.5 to 2hrs.
sewell makes a brake master cylinder rebuild kit. however in your case, you said your fluid is leaking and the level in the resevoir is dropping, so you will need to replace the whole unit.
$800 sounds a bit high, but then if using original Lexus parts, then its on the money. a brake master cylinder i assume is around 400, and the remainer is labour and fluids. the mechanic will need to replace the brake master cylinder, BUT also need to do a brake bleed flush as it will introduce air into the system. thus, im guessing the amount of labout for just the brake master cylinder is around 1.5 to 2hrs.
GS4_Fiend
Lexus Test Driver
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Quote:
sewell makes a brake master cylinder rebuild kit. however in your case, you said your fluid is leaking and the level in the resevoir is dropping, so you will need to replace the whole unit.
$800 sounds a bit high, but then if using original Lexus parts, then its on the money. a brake master cylinder i assume is around 400, and the remainer is labour and fluids. the mechanic will need to replace the brake master cylinder, BUT also need to do a brake bleed flush as it will introduce air into the system. thus, im guessing the amount of labout for just the brake master cylinder is around 1.5 to 2hrs.
Mines kinda soft also. But I think we should try bleeding the brakes first before jumping into conclusion. Originally Posted by SorrGwa
im going to be doing this next on my GS. i noticed after my last brake change, the pedal began to feel soft. there isnt any leaking, so i assume the seals are all gone.sewell makes a brake master cylinder rebuild kit. however in your case, you said your fluid is leaking and the level in the resevoir is dropping, so you will need to replace the whole unit.
$800 sounds a bit high, but then if using original Lexus parts, then its on the money. a brake master cylinder i assume is around 400, and the remainer is labour and fluids. the mechanic will need to replace the brake master cylinder, BUT also need to do a brake bleed flush as it will introduce air into the system. thus, im guessing the amount of labout for just the brake master cylinder is around 1.5 to 2hrs.
OEM unit (brand new) is $1200 or so. You can source a used unit on ebay or a toyota junkyard. Did your mechanic tell you where it's leaking at? If the internal seals are gone, the rebuilding kit is a fix for it.
thanks for replay guys i called at local dealer ship its cost $1859 for a new one plus labor and my mechanic showed me its leaking some where at the bottom its leaking bad i know i am not spending $1859 i am gonna find one for cheap i saw one at ebay rite its about $575 plus shipping i am stilling looking
umm, when i did my last brake change, i changed the pads and the lines, so a brake bleed was manditory. i even thought that i still had air in the lines and bled it twice on top of the first time. once a few days after use, and again a month down the road.
either way, with 165,000 miles on the odometer, the seals are bound to be gone already.
either way, with 165,000 miles on the odometer, the seals are bound to be gone already.
Quote:
Originally Posted by GS4_Fiend
Mines kinda soft also. But I think we should try bleeding the brakes first before jumping into conclusion.