Had TSB for Dash done this wk and also 40k maintenance and now Park Assist doesnt work.
Is there a button, switch, fuse, etc to fix this or did Lexus break while doing TSB.
Everything else now perfect "Rattles, squeaks, etc.
Its weekend and no techs at Dealership.

 

There is a button beside your fuel door and trunk release button (also rear shade if you have that option also). Make sure the green light is lit, pushing the button turns the system on and off.

 

been there, done that, read manual.
No green light just faint beep.
I meant other than normal operation.

Thanks

 

Sounds like something was not connected back correctly when they took your dash apart for the TSIB. I'd take it back to the dealer, hop in your free loaner, and let them worry about it.