Lexus Visibility Defroster/defogger System Windshield Controls/wiring

I have a steering column that squeaks when I turn my '01 Lexus RX-300.

All of this stuff is starting to make. My husband was driving a 2001 lexus gs
430 and lost control somehow there still not sure how crashed into a tree and the car exploded a couple times i was just wondering if anyone has had any trouble with

1999 Lexus RX300.....Passenger seat belt light keep blinking when somebody seat on the front.Thank you for your help.

93 gs300,  out of the blue,, car died, towed home, started ran fine, 5 min. later dies. got to run again, 7 min dies. noticed with key on all the injectors are clicking irratically, then while trouble shooting,, everything, comes to a stop, when