'96 LX 450, squeaks on turns

[winsettz]

To start,

Drove the lexus from California to Minnesota.

On cold days (and they are cold enough in the fall) when the car is started up, when the steering wheel is turned the steering wheel seems squeaks if turned in either direction. Car isn't moving. Seems to idle fine for a cold start.

Wondering if it something is up with the steering column, or something in power steering might be going. Any help would be appreciated.

Edit: Car was taken in for oil changes before the cold set in. Actually don't recall if they checked fluids. I'll do that later, but would appreciate any help or ideas on where to start.