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Vibration at idle while in gear

Old 02-21-15, 06:54 PM
  #31  
vadpink
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Just wanted to give an update to tall.. I decided to bring my car into Lexus to find out what the actual problem was. After a day of inspecting my car, i finally got the call from the Lexus Services department. It ended it being my brake actuator. Finally got my car back, no vibrations of any sort and drives like knew! Thank gd I bought had an extended warranty for this car. Otherwise it would have costed my an arm and a leg!!
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Old 02-22-15, 12:34 AM
  #32  
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Originally Posted by vadpink View Post
7milesout, exactly my issue.. So i guess this is normal for the LS460? I dont remember having anything like this on my '04 LS430 :/. gosh I hate my OCD!
I have this same thing happening. Thanks for the update on your recent post
FWIW, I've been in a mid 2000's Camry that had the same thing going on
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Old 08-31-15, 11:02 AM
  #33  
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To add to this thread, I noticed three things this morning upon starting my car:

1and 2. The Malfunction Indicator Lamp lit, along with the slip indicator. I read somewhere that when the MIL lights, VSC is turned off , and thus the slip indicator lights.
3. With the A/C off, in Drive, and not moving, the idle RPM shows as just under 500 rpm, there is a slight vibration felt in the steering wheel and driver's seat, and there is a low sound that corresponds with slight vibration. I'm not sure where the sound is coming from. Turning on A/C results in the idle increasing to around 700 rpm, and there's no vibration or associated sound

None of these three things has happened before with this car I purchased a little over 3 months ago. I brought it to my local Lexus dealer, and I'll report on the status. I find it difficult to believe the vibration is normal, as the car has never done that before. I've used the car numerous times with no A/C.
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Old 08-31-15, 03:12 PM
  #34  
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Originally Posted by Gbp View Post
To add to this thread, I noticed three things this morning upon starting my car:

1and 2. The Malfunction Indicator Lamp lit, along with the slip indicator. I read somewhere that when the MIL lights, VSC is turned off , and thus the slip indicator lights.
3. With the A/C off, in Drive, and not moving, the idle RPM shows as just under 500 rpm, there is a slight vibration felt in the steering wheel and driver's seat, and there is a low sound that corresponds with slight vibration. I'm not sure where the sound is coming from. Turning on A/C results in the idle increasing to around 700 rpm, and there's no vibration or associated sound

None of these three things has happened before with this car I purchased a little over 3 months ago. I brought it to my local Lexus dealer, and I'll report on the status. I find it difficult to believe the vibration is normal, as the car has never done that before. I've used the car numerous times with no A/C.
The dealer tells me the problems are related to the camshaft circuit being open, and the fix is to reprogram the ECU. The below TSIB L-SB-0142-11 seems to describe the MIL situation with my car:

http://www.revbase.com/BBBMotor/TSb/...dPdf?id=172396

I'm told that should fix the low idle issue, too. I hope that's correct.

Last edited by Gbp; 09-01-15 at 03:17 AM.
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Old 09-01-15, 05:02 AM
  #35  
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I forgot to mention that when I brought the car to the dealer upon turning off thr engine and the service advisor turning it back on, the MIL and slip indicator no longer stayed lit. There's some sort of data logging function, however, so tne error code was viewable. Indeed the ECC was recalibrated per TSIB L-SB-0152-11.

Neither the MIL nor the slip indicator has come on, beyond the momentary display when the car is started. The idle while stopped and in drive with A/C off seems to be at 500 rpm, but no lower. The vibration is still present, but greatly reduced. The harmonic(?) sound hasn't recurred.
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Old 12-28-15, 07:06 AM
  #36  
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Sorry to resurrect these threads, but here is another one that kind of mirrors what I'm "feeling."

I could just be OCD as the vibration is almost imperceptible, but again, it only happens when the RPM drops to 500 and that in itself is rare. No noise, just a slight vibration.

Other than that, it's dead silent at idle in both scenarios.

Another thread mentioned my car has to learn something (a battery change thread that I won't bump)?

Again, kind of leaning towards taking my car to the dealership, but if this is normal, I'll just wait and see. The other solution is to just keep my AC on, even in heat mode (I turned it off), as any load seemingly prevents idle speed from dropping below that 700ish mark.
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Old 12-28-15, 02:05 PM
  #37  
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So I talked to Lexus service tech about my idle and slight vibration and he said it was normal.

Ok.

He said our cars are drive-by-wire and the, and I quote, "learning" computer controls the throttle body. He said it takes a bit learn, whatever it is learning lol, and should lesson the more I drive.

Well today, it didn't happen at all, no RPM drop, even with heaters off, so eh, who knows.

So in summary, there's nothing they can do about it or there's nothing they are willing to do about it based on my brief conversation.

I'll continue to monitor and see how it goes.

Again, it's almost imperceptible, but I do notice it. It really doesn't bother me, but hey, it's brand new.
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Old 01-01-16, 05:29 AM
  #38  
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Well, the low idle speed (and associated slightly perceptible vibration) is completely gone. It's now idling slightly above 600 or so RPMs under all stopped conditions after the car reaches nominal operating temperatures (while in drive), slightly higher while warming up.

I took delivery at 68 miles and it's now clocked in at 250 miles or so. All minor trips of mixed driving, some freeway. Never took the car over 3000 RPMs during that time I think. Still trying to break it in (yeah I haven't driven much as I got the last two weeks off).

So I guess I taught that computer a thing or two lol.

In any case, it's rather interesting how that works. I guess I can look forward to this every time that computer resets, assuming it's not flashed into some permanent memory bank somewhere.
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Old 01-02-16, 09:59 AM
  #39  
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I thought about chiming in a few times. I totally agree with everything you have experienced and done. Nearly all new cars are ran by computer and react similar to your experience. I have even had this happen to my LS. my idles has been anywhere between 1100 and 400. Those are the extremes while 600-800 is the typical. I have gotten the slight vibration before and done a reset. NOTE, if you ever try to reset, disconnect the negative and this is the important step, do something to put a load on the system. Pushing the brake to turn on the brake light. This will take away any charge that capacitors in the system my have. Wait a minute. And reconnect. When you start you car it may act strange or even die. This is typical as it is learning the air fuel mixtures. It starts with factory default program and quickly learns. It will get close right away and slowly develop the best fuel air mixture algorithm. Again this is typical for any car in the last 20 years. What happened to you is nothing I would call out of the originally or of major concern. Your issues might have been started by a dirty sensor and your car was trying to compensate Dirty 02, fuel, or air sensor. I think things like this happen to cars quite often. I think it's just the LS owner is more in tune with their car than the average driver.
I am not a mechanic or expert. Just stating what I beleive or experienced.

Last edited by Unsober1; 01-02-16 at 10:04 AM. Reason: Add disclaimer that I am not an expert
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Old 05-23-18, 07:24 AM
  #40  
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Default Plzzz help ☹️

Guys plzz help ; i have a small cyclic vibration which comes and every half a second ; i can fell it in my driver seat
i changed every thing:
injectors
plugs
coils
oxygen sensors
engine mount
MAF
Throttle
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