new LS 460 shakes
#31
Lexus Fanatic
That's interesting... I had the TSIB that I8ABMR referenced above done (among many, many, many other things), and the first thing the TSIB calls for is a road force check to ensure road force variation on the tires is within 10 lbs before beginning the orgy of disassembly, so ownership of it is assumed (and presumably required).
#32
While the roof reinforcement that is part of the TSIB should help, its main role (as I understand it) is to reduce the drone noise that the TSIB describes (which I never had). It may help a bit on the vibration front, but in the end, I think the drive shaft is the culprit (i.e., it is the one thing that rotates). Ditto for the replacement of the rear suspension stops - the third item on that TSIB - it likely helped marginally, but did not resolve the body vibration.
I would suggest - as a starting point, so that you don't have to incur the expense of the TSIB - that your dealer look at your drive shaft more closely (plus u-joint, couplings, etc.) and also tackling any other TSIB steps that are external to the car (suspension stops) prior to taking the whole interior apart. The drive shaft angle on my car was way, way off. This is a manufacturing/assembly problem that my dealership had to submit a detailed report to Lexus about. Every bit in the TSIB helped, but it was ultimately this, which went beyond the TSIB, that was the biggest issue (with body vibration; steering vibration was a separate problem).
Last edited by caha14; 05-25-12 at 07:43 PM.
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