I have an IS250 2009 with 91962 miles/148000KMs. I live in Canada, so it gets pretty cold in winter, and since the temperature has dropped, I have been having this weird squealing noise while turning slowly either right or left. I read online it could be either power steering pump (but the lexus has an electronic PS so there is no pump) or Hub. On some websites I read it could also be due to Tie-Rods, or the brake heat plate.

Any one else experience this?

 

One guess would be the sheet-metal dust shield behind the front brakes. It can get bent, or even get a pebble caught in there in a way that rubs when making a sharp turn.

 

Could be the power steering pump. What tires are you on? When I had my Michelin PSSs on when the temperatures were around freezing, they would squeal when turning in one spot on concrete

 

No, it couldn't. The 2IS has electric power steering, not hydraulic.

 

I'm having the same trouble right now. I get some squealing noise when turning left or right in the driveway. Pulled the wheel off checked bushings, ball joints, everything looks good. The noise is on the driver side. I get a slight poping noise too. Once the car is on the road a few minutes the noise stops. The sway links have no play. The only thing I see is the LCA bushing on the subframe is moving slightly horizontally. Since the noise sounds like strething rubber. It' the best I can describe it. The car handles well no slop, no vibrations.

The bushing circled in red is what I see shifting horizontal slightly.

 

mb, thanks for the correction