chicov8

i do have 2002 gs430 119xxx miles (production date 11/01) that have soft breake pedal and its going all way down (breaking used to better, but car still stop)
when i pump break 10-15 times (car was park at that time) i got warning lights vsc, vsc off, abs, break and noisy signal after i stop pumping break warning lights disapear after 2-3 seconds
break fluid reservoir is full
is that break booster going bad?

chicov8

when i pump the break its not getting harder
i do have recipt from previous owner that in 2008 (car had 100k miles at that time) he changed break fluid but im not sure if he bleed it or not and it was done at independant shop

GS4_Fiend

iTrader: (22)

First, try to flush out the brakes with new fluid. See if pedal becomes hard. If still does it, its time for new bmc.

chicov8

bmc? what that stands for

phamxOC

iTrader: (14)

from my experiences, you're abs unit is out. the part itself is expensive 600-700dollars and labor took about 45 minutes to install.

chicov8

if abs unit is out is it gona show a code on scaner?

GS4_Fiend

iTrader: (22)

It's common for 00 and below. His car is 02. That's why I suggested him do the cheap thing first.

You would need a special scanner to read ABS codes.

chicov8

2002 is on title but production date is 11/2001
i will go bleed system on tuesday and let technician take a look at the problem

GS4_Fiend

iTrader: (22)

From experience..bleeding the system once is not gotta do jack. Bleed it at least 3-5 times.

chicov8

how much brake fluid do i need to bleed it few times?
i also dont think its gona help because there is not air in the system (when i pump it its not geting any harder and its going all the way down)
and why do i have all the warning lights when i pump it 10-15 times?

99GS400KSW

While you're at it, grab a scanner and get the codes. If yours still stops to some degree, I think the unit is about done.

BMC is 1200 +/- brand new, 400-700 used depending on where you look. I picked up an unit for 200.

chicov8

bmc brake muster cylinder? or just brake booster?
where did you get it for $200?
and yes car does stop but need more distance to stop

kit cat

iTrader: (6)

out of curiosity, how do you bleed the brakes? specifically, how do you bleed the booster itself or did you find a way to open up the ABS ports on the booster by some other way?

chicov8

is the lexus quality over rated?
i had 2000 ls400 before and car had few problems
that gs430 i bought few months ago with 115k from a member of cl had problem with ball joints and left side upper control arm (all cost a lot of $ to change with upper control arm very expensive even from sewell)
problem with sunroof shade (that is noisy), moisture in left headlight, slight vibration when car is in gear (probably maf needs to be cleaned) and now that problem with brakes
before i had old (1997) nissan maxima wich was totaled with almost 170,000 miles (had it for few years and only one problem when i had to change rear calipers)
before that 1995 toyota avalon which i bought with 105,000 miles and after few years get bored with that car and sold with 180,000 with no single problem (just had to change battery)
i need a good reason not to sell lexus and not to go back to nissan or toyota
lexus with 119,000 miles shouldnt have so many problem or maybe im wrong

repugnante

Buy a Mercedes, Audi or BMW with 50k miles and witness their problems. Then report back about Lexus quality....