Lexus Troubleshooting Questions? Ask a Lexus Expert
Welcome, I'm Chris (aka Moose). I'm here to help 365 days a year, but not every hour of the day. I try to prevent delays as much as possible. Please understand I am not there and can only advise based on what you tell me. Let's get started.
Can you go into more detail, not sure what hard lock left and right means?
An electronic steering gear will not move when manually turning the input. Did you use a scan tool to check the systems codes and electronics?
Best I can tell from the diagrams, yes if electrical power is lost while driving the steering wheel will not turn. Losing electrical power while driving without prior noticed issues telling the driver to pull over are very rare.
I will opt out so another can help, best of luck