Notices
LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Fault Code 43 TRAC light Flashing! AGH!

Thread Tools
 
Search this Thread
 
Old Aug 31, 2007 | 08:53 AM
  #1  
ewenpg's Avatar
ewenpg
Thread Starter
Driver
 
Joined: Feb 2007
Posts: 129
Likes: 0
From: CA
Default Fault Code 43 TRAC light Flashing! AGH!

After trying a few things to try and stop the flashing TRAC light with no success I took it to a mechanic who used to be a Lexus technician and he said it had an error code 43. After attempting to clear the code a few times it never seemed to work. The error code definition is the "ABS system controller" but everything still works fine. The mechanic said that it is possibly confused by the fact I put on bigger rims and wheels (they are significantly bigger then stock) and that is confusing the ABS. I am not 100% convinced as I had the wheels on for several weeks and nothing happened. Has anyone had this problem and/or know what to do?
Reply
Old Nov 22, 2007 | 07:46 PM
  #2  
LILEVO's Avatar
LILEVO
Advanced
20 Year Member
Photogenic
Liked
Top Answer: 1
iTrader: (1)
 
Joined: Sep 2005
Posts: 716
Likes: 334
From: CA
Default

I'm getting this error as well. The trac light is on solid and this code pops up. ABS code 54 also pops up, but the ABS light is not illuminated.

The trac light will only come on if I drive the car. Idling, it will never come on. Also, sometimes the trac light will never come on while driving.

Any idea why this would pop up out of the blue?
Reply
Old Nov 22, 2007 | 08:45 PM
  #3  
PureDrifter's Avatar
PureDrifter
BahHumBug
CL Folding 100,000
20 Year Member
Photogenic
Liked
iTrader: (10)
 
Joined: Aug 2004
Posts: 23,920
Likes: 114
From: California
Default

one or more of the wheel speed/abs sensors is dead.
Reply
Old Nov 22, 2007 | 10:22 PM
  #4  
LILEVO's Avatar
LILEVO
Advanced
20 Year Member
Photogenic
Liked
Top Answer: 1
iTrader: (1)
 
Joined: Sep 2005
Posts: 716
Likes: 334
From: CA
Default

Is there a way to test each one and find out which one it is?
Reply
Old Jan 25, 2008 | 11:09 AM
  #5  
Lexushead's Avatar
Lexushead
Driver
 
Joined: Jun 2003
Posts: 131
Likes: 0
From: Minnesota
Default

Did you ever find out what the problem was?
I'm slipping and sliding here. My "TRAC" in the center of the gage comes on and off and the wheels traction is working but when the wheels stop sliding "TRAC" comes on and stays on untill I stop and turn off the car. I thought it was the throtle body but it is clean. I haven't check the code yet but I'm afraid that ecm might not store the code since it goes away when I turn off the car. Also, it's been really cold here; too dang cold.
Reply
Old Jan 25, 2008 | 04:55 PM
  #6  
LILEVO's Avatar
LILEVO
Advanced
20 Year Member
Photogenic
Liked
Top Answer: 1
iTrader: (1)
 
Joined: Sep 2005
Posts: 716
Likes: 334
From: CA
Default

Yep same here. If I make the traction control work, it will work. After this, sometimes the light will not come on the remainder of the trip. Most of the time the light pops on and trac is disabled.

It's pretty annoying because obviously traction control works. It just decides to go into protection mode for some reason.

It's very random and I can't pin it down to one thing or the other.
Reply
Old Jan 26, 2008 | 09:08 PM
  #7  
ewenpg's Avatar
ewenpg
Thread Starter
Driver
 
Joined: Feb 2007
Posts: 129
Likes: 0
From: CA
Default

Usually this kind of problem is due to the sensors in the brakes being faulty. They are open to so much abuse due to their position. However, I have no idea how to test them. If anyone know it would be mighty handy???
Reply
Old Jan 29, 2008 | 12:09 PM
  #8  
LILEVO's Avatar
LILEVO
Advanced
20 Year Member
Photogenic
Liked
Top Answer: 1
iTrader: (1)
 
Joined: Sep 2005
Posts: 716
Likes: 334
From: CA
Default

Ok. If the temperature is over 40 degrees my TRAC light will never come on and Trac control works perfectly all day lonng. As soon as it dips below 35-40 degrees, the light will come on.

Not sure how this helps me narrow anything down, but who knows.
Reply
ClubLexus Stories

Celebrating Lexus & Toyota from Around the Globe

story-0

2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

 Michael S. Palmer
story-1

Top 10 Most Confusing Things Lexus Has Ever Done!

 Joe Kucinski
story-2

2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

 Michael S. Palmer
story-3

10 Lexus Bargains That are Cheaper Than a New Toyota RAV4

 Joe Kucinski
story-4

8 Weirdest Things Lexus Has Ever Built

 Verdad Gallardo
story-5

10 Lexus Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-6

8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!

 Michael S. Palmer
story-7

10 Best Lexus Models No One Remembers

 Joe Kucinski
story-8

TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing

 Michael S. Palmer
story-9

Top 10 Lexus & Toyotas to Drive Before You Die!

 Joe Kucinski
Old Dec 26, 2008 | 03:28 PM
  #9  
Lexushead's Avatar
Lexushead
Driver
 
Joined: Jun 2003
Posts: 131
Likes: 0
From: Minnesota
Default

I'm back to this thread again. Still have the same problem "TRAC" stays on all the time now.....................
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Michael
LS - 1st and 2nd Gen (1990-2000)
2
Dec 15, 2013 08:13 AM
durps
SC - 1st Gen (1992-2000)
22
Jun 18, 2013 10:06 PM
FusionMan79
LS - 1st and 2nd Gen (1990-2000)
3
Jun 23, 2002 05:27 PM




All times are GMT -7. The time now is 04:56 PM.

story-0
2026 Lexus IS 350 F Sport Review: The Last of Its Kind Still Rocks

Slideshow: the 2026 IS 350 isn't all that new, and that's why we love it!

By Michael S. Palmer | 2026-06-04 14:35:23


VIEW MORE
story-1
Top 10 Most Confusing Things Lexus Has Ever Done!

Slideshow: 10 most confusing things Lexus has ever done.

By Joe Kucinski | 2026-06-04 09:40:55


VIEW MORE
story-2
2026 Lexus ES Review: Lexus Re-Embraces Founding Principles

Slideshow: Our First-Drive Review of the 2026 Lexus ES!

By Michael S. Palmer | 2026-05-29 20:30:16


VIEW MORE
story-3
10 Lexus Bargains That are Cheaper Than a New Toyota RAV4

Slideshow: 10 Lexus bargain that are cheaper than a new Toyota.

By Joe Kucinski | 2026-05-20 10:28:20


VIEW MORE
story-4
8 Weirdest Things Lexus Has Ever Built

Slideshow: From hoverboards to luxury yachts, these are the strangest projects Lexus has ever attached its badge to.

By Verdad Gallardo | 2026-05-16 11:34:36


VIEW MORE
story-5
10 Lexus Designs That Have Aged Like Fine Wine

Slideshow: Some luxury cars chase trends, but these Lexus models look better now than they did when they first rolled into showrooms.

By Verdad Gallardo | 2026-05-06 17:58:29


VIEW MORE
story-6
8 Tips for Improving Your Hybrid or Plug-in Hybrid's Efficiency!

Slideshow: How to Get the Best Fuel Economy with a Hybrid and Plug-In Hybrid!

By Michael S. Palmer | 2026-05-05 20:54:44


VIEW MORE
story-7
10 Best Lexus Models No One Remembers

Slideshow: 10 best Lexus models no one remembers.

By Joe Kucinski | 2026-05-05 17:33:28


VIEW MORE
story-8
TRD Off-Road Premium: Best 2026 4Runner, Except This One Thing

Slideshow: diving into 4Runner TRD Off-Road Premium's pricing, performance, fuel economy, features, and amenities!

By Michael S. Palmer | 2026-04-23 13:09:18


VIEW MORE
story-9
Top 10 Lexus & Toyotas to Drive Before You Die!

Slideshow: the 10 Lexus and Toyota vehicles you need to drive before you die.

By Joe Kucinski | 2026-04-23 10:34:24


VIEW MORE