Question about 1990 Lexus LS 400

1 Answer

1990 LS 400 Brakes

My brakes have failed. I replaced the master cylinder and all brake lines. I am now being told that I need to replace the ABS, the "brains" to the braking system. Where can I find the part? and how much is it? and is this in fact the problem. The brake pedal goes all the way to the floor and I have little braking ability.

Thanks for any help you may provide

Posted by on

  • 3 more comments 
  • eellbb Jan 11, 2009

    Yes the brake system has been bleed on several occassion

  • eellbb Jan 11, 2009

    Lexus says the ABS has failed but they say the cost to replace the part is $2200. Are used parts available.

  • eellbb Jan 12, 2009

    Lexus has told meI the ABS needs replacement. I have sense learned that each wheel has an ABS and the cost of each is about $200. I am going to find out if you have to replace all four or whether each are independent of each other and you can possibly replace the particular wheel that is bad.

    If anyone knows about the ABS let me know


  • Roberta Smith
    Roberta Smith May 11, 2010

    you have air somewhere in that system i'm reasonable sure of that or you have a component that has failed

  • Roberta Smith
    Roberta Smith May 11, 2010

    did you bleed the air out of the brake system when you replaced the brake lines ?



1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 24 Answers

You need to bleed them.

Posted on Jan 11, 2009

  • Ramon Velasquez
    Ramon Velasquez Jan 11, 2009

    You need to go to a Auto part store to purchase this part, if you don't that tpye of money to pay for it, maybe you can check a junk yard. I am not sure how mach it cost, but if buy new it will cost alot, part & repair. It's best to buy it, and have someone you know that can do the job for you, because the shop will charge all for the labor, and that is like $55.00 per-hour. I hope I have help you. Be smart in what you do, and who you see for this job OK.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Has abs and was told needed power brake booster replaced. cant find the part cuz they say non-abs..what are some things I can troubleshoot to check for problem

1990 Oldsmobile Toronado Specs

depending on your exact can be optional, a dealer may have to order the part. i tried several sites and ive found nothing. seems like a specialty part aka (dealership only part)

Sep 29, 2015 | 1990 Oldsmobile Toronado

1 Answer

How to bleed abs brakes when air is in master cylinder

Abs brakes have to be bled in the order the manual states, you will need a power bleeder then follow instructions in the manual. it is the abs cylinder that is hard to get the air out of, imposable if the instructions are not followed .

May 26, 2014 | 1997 Chevrolet K1500

1 Answer

Rebuilt brake master cylinder brake go to floor

there is still air in the system. To bleed the brakes bleed out the m/cyl first by loosing off the lines at the cylinder v/ This primes the master cylinder first. Then starting at the longest line first bleed out the air finishing at the shortest line

Mar 08, 2014 | Mercury Sable Cars & Trucks

1 Answer

1998 Dodge Caravan New brakes. Front Axel removed to get to power steering pump to remove it. Got van back brakes felt strange had to hit them hard car pulled infront of me. ABS light came on. brakes...

Bad brake master cylinder could cause this, It will start leaking internally and not build up pressure. Will happen just do to age, will need to replace it and bleed brake system.

Jun 12, 2017 | 1998 Dodge Caravan

1 Answer

Does the 1990 Lexus LS400 master cylinder come with traction control?

traction control is a separate system. If traction control or ABS is a problem they are taken out of the loop and the normal brakes still work. The master is for the brake system/ The ABS module and valve body and wheel sensors are your traction/antiskip system.

Jul 24, 2010 | 1990 Lexus LS 400

1 Answer

95 Lexus ls400, replaced the master cylinder and

check the vacum lines going to the brake booster. if everything is connected properly you may need a new booster.

Oct 01, 2009 | 1995 Lexus LS 400

3 Answers

Just replaced master cylinder on 1990 aerostar and bled the brakes, still the pedal goes to floor and i have no brakes

Did you bench bleed the master cyl. before installing it? then when you installed the new master, did you bleed all 4 points? If yes, then check all for points for leaking caliper/s and leaking wheel cylinder/s. If the van has ABS, check the valve body for a bleeder screw and see if air bleeds out of it. If you've checked everything twice and did everything right then your new master cyl. may be defective.

Apr 29, 2009 | 1986 Ford F 250

1 Answer

Is a computer needed to bleed brake system?

bleed the brakes the easy way is to have two peoples one to pump the brake pedal and the other one is to open the bleeder use the driver side front wheel it close to the master cylinder and you could get a brake bleeder and do it by yourself.

Feb 16, 2009 | 1990 Lincoln Mark VII

1 Answer

I have a 1990 Lexus LS 400 and the brakes have failed. I replaced the master cylinder, the brake lines and now being told the ABS "brains" of the braking system needs replacement. Has anyone had this...

If the pedal is spongy you may still have air in the lines. If there are no brakes at all you may need to adjust the push rod for the master cyl. If the ABS has a fault it will set a code and the rest of the brake sys. will work normally

Jan 11, 2009 | 1990 Lexus LS 400

1 Answer

Brake Problems

May be only a check valve. Be sure your man knows ABS stuff. It CAN get tricky....accordianman

Jul 28, 2008 | 1999 Plymouth Grand Voyager

Not finding what you are looking for?
1990 Lexus LS 400 Logo

Related Topics:

179 people viewed this question

Ask a Question

Usually answered in minutes!

Top Lexus Experts


Level 3 Expert

77499 Answers


Level 3 Expert

917 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Are you a Lexus Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides