Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Lexus LS: Problems & Solutions



  • chendchend Posts: 13
    On further exploration I found "Strut rod". Is this the same as "strut bar". Could you also tell me what other parts [ such as bushings etc. ] need to be changed at 80K at the same time I change the strut bars. Right now only the right side makes the THUD and not the LEFT side. Should I chnage BOTH or only the RIGHT.
    THANKS for your help. :)
  • bildowbildow Posts: 100
    It's always best to do both because when you start taking apart the front end you will probably find the other side is about ready to go also. Look in the yellow pages under auto repair and see if some one has a ad saying toyota and lexus repair this could save you money.
  • gwendolyngwendolyn Posts: 46
    I have the same problem after I replaced the strut bars or torsion bars....what else could cause this problem is the exact same one you're having....

    Also...another problem....

    I noticed a vibration around 60 mph, only when I press the accelerator....if I let off the accelerator, the vibration goes away....does anyone have an idea on this on...I replaced the transmission mount, but I have not replaced the motor mounts....


  • chendchend Posts: 13
    I found a site [ look under V8 forums - suspension and handling tech ] I believe the
    solution is to replace the Strut Bar Cushion. I have not
    replaced mine yet. If you do, please post your results.

    Thanks :)
  • bildowbildow Posts: 100
    has any with an old lexus found that the lifters make noises such as a tappet type noise. The dealer wants 1100.00 dollars to adjust the valves I also have been told that a small noise is ok it doesn't hurt the engine to have noisy lifters I was also told that the lifters are solid lifters and when synthetic oil is used it makes them a little bit louder. I only notice one that is a bit louder than the rest and does anyone know if this is going to hurt the motor some lexus repair people said 7 yrs ago just run the car and not to worry so far after 100,000 miles the noise seems to be at the same level and the car runs fine. Does anyone know having loose lifters will it do damage to the motor it has 150,000 miles and seems ok I use 5-30 mobil one synthetic oil and drive long haul daily 100-200 miles any comments from some one who knows the lexus motor . I've been told its bullet proof and not to worry just drive it like h---. :confuse:
  • deadairdeadair Posts: 10
    I have an air conditioning problem with my 1995 LS. I had the a/c compressor changed last year and everything worked fine. But coming into summer, the air is not getting cold. I observe the compressor working and I added some 134. Now I notice that the clutch shuts on and off. The temp setting is set to max cold. It seemed to be cold as I was adding the 134, but no more. There is a slight cold, which would indicate that it’s not a leak. I read on some posts about the servos heat the air, even if the air is operating. Any troubleshooting tips before I take it to Lexus?
  • bildowbildow Posts: 100
    You can check your sight glass on the air conditioning out side of your radiator, when facing the engine look down to the left in a little cubby hole you will see a round glass that faces the front of the lexus have the air on and see if you see bubbles in the glass if so you need a charge if not then your system is full make sure you have the temp way down and the system blowing in the cabin before checking the site glass.Also almost any air conditioning shop can check it for you also in the winter always run the air once a week you can have the heat on just hit the a/c button for about 15 minutes the 134 freon need to be run through the system weekly it's not as friendly as the R12 we use to use. ;)
  • wwestwwest Posts: 10,706
    Lexus has a dual mode pressure switch in the high pressure line side. If the pressure is TOO low that is an indication of the almost total lack of refrigerant and the controller will not run the compressor at all.

    The fact that the compressor cycles on and off is an indication that there is MORE than enough refrigerant to provide cooling at the (possibly too low) level the system is trying to provide it.

    The compressor cycles off once there is "TOO" much, enough, liquid refrigerant in the reservoir on the high pressure side.

    In the 92 models you can check the operation and/or position of the mixing vane servomotor by watch the push/pull cable position the hot water flow valve at the top center of the firewall inside the engine compartment.

    The how water valve should move from fully closed to fully open when you change the temperature setting from max cooling to max heating.

    Your 95 may operate the same way.
  • wwestwwest Posts: 10,706
    Unless the refrigerant contains a dye as some do you cannot tell the difference between an empty sight glass and one with liquid.

    The thing to do is watch the sight glass as the compressor comes on line. You should see the transition from empty to bubbles, bubbling flow, and then to a solid liquid flow.

    Once the compressor cycles off and as the stored refrigerant is exhausted via use the sight glass will transition in reverse, solid liquid to bubbling flow and then empty, and the compressor will, should, quickly restart.
  • mquickmquick Posts: 1
    I purchased a brand new 2005 LS 430 about 2 months ago (March 2006). I took it back to the dealer and left it there for them to check out the wind noise that occurs when the car exceeds 40 miles an hour. It is very loud at 60-70 miles per hour. The dealer had the car for 2 and a half weeks and said the District manager even road tested it and said it was normal.

    It is extremely loud. I am going to take it back again to see what the next level of review is. This is not a quiet car.
  • rgswrgsw Posts: 333
    When you go back to the dealer, I suggest you ask to drive another 2005 LS or a 2006 LS (which is the same) and see if they sound the way yours does. If they are quieter, then you have something to compare with. Good Luck.
  • famwaldfamwald Posts: 114
    I like the suggestion of driving one of the demos on the dealer's lot, to compare. You're sure you are hearing wind noise and not road noise? Some road surfaces cause a terrible roar.
  • wwestwwest Posts: 10,706
    And the "wrong" type of tire can contribute greatly to the level of road noise you get. In my experience the LS series deserves nothing less than the Bridgestone Turanza "summer only" tires.

    Quiet and comfortable.
  • sailsail Posts: 17
    Why "summer only" ? I have these tires on my LS430 and MB300E best tires I have ever installed in my 76 years. Work fine in NJ, would use no other a lot to say from a former Michelin guy.
  • nvbankernvbanker Posts: 7,285
    There is no way you should be hearing any significant wind noise. I've had my LS up to 133mph, and the wind noise was not significant. Road noise, OTOH, can indeed be a problem. Especially if you have the 18 inch tires, and the road surface is bad.

    I agree with the above suggestions, about driving another one, and comparing. If you are truly hearing wind noise, something is wrong indeed.
  • nvbankernvbanker Posts: 7,285
    My LS does have one new issue - when the steering wheel retracts when the key is removed, it will squeal, sometimes rather loudly. This is a new development, and the hotter it is, the louder it is. Anybody have any experience with this? Is it easy for the dealer to fix? It's going in Wednesday for service, and to address this issue.
  • garyh1garyh1 Posts: 386
    My '05 LS has been problem-free (except for needing reprogramming of the computer to stop the occasional hesitation in acceleration).

    But now my wife has noticed that every time I release the brake pedal, there is a bit of a clunk as the pedal returns to the top of its range. I hadn't actually noticed it before, but now that she has pointed it out to me, I have to say it is definitely there. No matter how softly or gradually I release the pedal, the sound is still there.

    Has anyone else noticed this? Can it be remedied by something as simple as a strategically placed rubber pad?
  • rgswrgsw Posts: 333
    I believe I had that on my 2002 and they just lubricated it and did not have to replace anything.
  • nvbankernvbanker Posts: 7,285
    thank you. Glad to hear there is a remedy. You know, these cars are SO good, any little thing becomes a huge issue to us....
  • rl53rl53 Posts: 6

    Took delivery of a 06 LS430 about a month ago with less than 900 miles on it currently. Lately, I have noticed that during cold start in the morning, i can feel a subtle shaking coming from the engine. It only happens during cold start.
    I have never experienced such shaking from a V-8 lexus before, be it a 1993 LS400 or a 2003 LS430. The shaking is very small but still noticealbe. Dealer said it's normal but I just want to see if anyone out there has similar experience. Thanks.
  • rgswrgsw Posts: 333
    Don't know how cold is "cold start". We have few "cold" days in NM. I've owned four LS430 in the past five or six years and have never experienced "shaking" when starting. I can hardly tell if the engine is running without looking at the tach, even from first starting.
  • nvbankernvbanker Posts: 7,285
    Took my car into the dealer for service. The squealing remedy seemed to be replacing the universal joint knuckle in the telescoping device. Covered repair, of course. Total silencio now...
  • nvbankernvbanker Posts: 7,285
    On occasion during warm up, I feel a very slight shudder for a few minutes, but it goes away. Hardly notice it, honestly. It seems to work out when the computer goes into open loop. I would keep driving. It'll either get better as the engine breaks in, or worse and the dealer can tear down your power module.... Hope it doesn't come to that.
  • rl53rl53 Posts: 6
    You described exactly what I wanted to say originally...thanks.

    I will just wait and see what happens as it gets broken in.

    But the car does become silky smooth once it's warmed up.

    A nicely engineered piece.

    Thanks all for your input.

  • pjekoopjekoo Posts: 14
    Hi Gary. I too notice the brake pedal noise on my 05' LS430. I drive with the stereo off, and the AC blower on low. The most noisy part of the car is the brake pedal clunk. If you do take it in, let me know if this is normal or if there is a fix. I also noticed the hesitation on acceleration. How does the reprogramming work? does it affect gas millage?
  • garyh1garyh1 Posts: 386
    Hi Gary. I too notice the brake pedal noise on my 05' LS430. I drive with the stereo off, and the AC blower on low. The most noisy part of the car is the brake pedal clunk. If you do take it in, let me know if this is normal or if there is a fix. I also noticed the hesitation on acceleration. How does the reprogramming work? does it affect gas millage?

    I don't know when I'll bother to deal with the pedal noise myself, but if I learn anything, I'll certainly post about it.

    The re-programming of the computer was wonderful - it totally removed the hesitation problem, and actually improved my gas mileage to boot! If anyone has this problem at all, I can't strongly enough recommend having this done ASAP. Just refer your dealer to Technical Service Bulletin TC006-04.
  • clyde3clyde3 Posts: 1
    I have a 2004 LS430 with 18,000 miles on it. Driver's seat cooling seems to stop working after driving about 30 minutes. I removed seat filter-makes no difference. Worked great last summer and earlier this spring. Any comments or suggestions before I take car to dealer where they'll test it for 5 minutes and most likely tell me it's working OK.
  • nvbankernvbanker Posts: 7,285
    No they won't, but I understand the sarcasm.... :blush:
    Those Peltier units (or their equivalent from
    Denso) only last a couple of years with heavy usage. I've had both of mine replaced once and may have to do so again. Take it in, they'll put in a new one no problem. ;)
  • jfodgersjfodgers Posts: 1
    My tach on my '97 LS400 quit working. Every once in a while it will spike up under heavy acceleration. Any ideas? I'm a long way from a dealer.
  • nvbankernvbanker Posts: 7,285
    Do ya use it often?
Sign In or Register to comment.