My ride height is a inchlower on the left side than the right. The high ride switch light comes on but makes no change when switched. IDEAS?

 

Welcome to Club Lexus.

What year and how many miles on car? The air suspension height has adjustment bolts. This hasn't been as thoroughly covered in this section but the 430 section has applicable info for the air suspension that will translate over for yours.

https://www.clublexus.com/forums/3285291-post29.html

 

i have a feeling your air suspension has given up and is leaking (very typical at this age). most folks convert over to traditional shock/spring setup, instead of paying $1000+ for a replacement air shock.

 

pretty much all LS400s have ~1/4-3/4" lean to the driver's side (LHD cars). pretty well documented. If yours is leaning more than that or displaying erratic tire wear/driving characteristics then you should be concerned, but otherwise that's just how they are.