I can’t help bypass or defeat a vehicle steering lock.
Use the correct key fob or mechanical key and try the steering wheel gently left and right while turning the ignition.
Replace the key fob battery if the vehicle uses push-button start.
Check the vehicle battery voltage and charge or replace it if low.
Try a spare key or fob if available.
Inspect the steering wheel for binding or the front wheels for pressure against a curb.
Consult the owner’s manual for the exact Lexus IS start and unlock procedure.
Contact a Lexus dealer or qualified automotive locksmith for diagnosis and repair.
If the steering lock is stuck, have the steering lock assembly, ignition switch, or related module professionally serviced.