A few weeks ago I bought an IS250 and I already have a problem with it. When I am driving (forward and in reverse) and I turn the wheel all the way to the left or right, the car starts to shake until I begin to straighten the wheel out again. Any ideas what this could be? I was thinking power steering pump but I'm not sure. There aren't any noises, just the shaking.

Thanks.

Welcome to CL also if the car is brand new just take it back to the dealer...

Sorry, I should've mentioned this in the beginning. Its a 2006 so its new to me, not a brand new car. I can't get it to the dealer until next week, so I just thought I would ask here to see if I can get any info ahead of time.

^^^ awww that makes a difference. Do you know if the call has done all of the recalls ? there was a Steering pin recall i think. you can log onto lexus and sign up and it should tell you.

Just an FYI, it can't be the power steering pump. The car doesn't have one.

There is a steering related recall though you ought check if was done at lexus.com as mentioned.

I had the power steering die on my '06 IS250 one morning. Just pulled out of the garage and just lost power steering.

It's not an uncommon issue - hope your car is under warranty still - the dealer will take care of it.

no matter what there is a recall on the steering rack and pinion. even if your car is out of warranty i'm pretty sure they will cover it.

I checked lexus.com and the steering rack and pinion was already taken care of... any other ideas? The shaking is also noticeable when moving at very slow speeds ie inching to a stop light etc.

I took the car in today and they told me that the "jumping" when turning the wheel all the way in forward and reverse could just be normal b/c its an awd car. Does this sound reasonable? Would changing the differential fluid make it any better?

The couldn't duplicate the jumping when turning or the shaking/bouncing when inching towards stop lights/in bumper to bumper traffic. They had no suggestions for the bouncing felt at very very slow speeds... I'm stumped.

That's called "binding" and you usually see it on cars with 4WD, not AWD. If your car is binding you may have an issue, however I would assume that it would do it all the time so the dealer would've noticed it. It's not lowered or have big wheels and tires on it, right? Otherwise, the tires could be rubbing something when you cut the steering to one side.

like BlackJackM said, binding is usually apparent on 4wd vehicles in the low setting. I had a 4x4 gmc sierra not too long ago and I would experience the same exact thing you mentioned in low speed turns while 4 wheel drive low was engaged.

Nope.. it's not lowered and still has the factory tires... I had heard of a audi a6 awd that had a similar problem and it was b/c of the differential... is this possible or is this considered binding?