i would try resetting the computer and see if the lights stay off. if they do you will be able to get through inspection after a few days of driving around.

 

I assume that would be done by disconnecting the battery?

Just make sure there are no security systems or audio security systems that would be locked if that was done. Check the owners manual before doing it.

 

you can clear the codes by disconnecting the battery or using a code reader, either your own or ask the auto parts guy to clear them after he checks them for you.

 

Been going thru hell trying to find the source of this very prolm with my 04. It started with the battery light coming on/ off occasionally ..but then more and more until it stayed on but with that, ALL my dash lights wud come on for a second then go out..well most of them wud go out.
I was poking around at the wires around behind my driver side head light and grabbed the horn, and it disintegrated in my hand!
I removed it and when I left my brutha's house, my battery light is still on but all my nutty dash lights coming on and going off have stopped!
Now considering the amount of corrosion in that area, I am now going to be looking for a bad horn relay and/ or a corroded connection UNDER the fuse box..which is a real PITA! My multi-meter shows the battery and alternator are good.. I'm lukn for a used horn at the wreckers now.
Lemme know how it goes.
Cheers

UPDATE: I drove it yesterday Jan 23rd /19 and "THEY"RE BACK!! I'm gonna look into the EB2 connector at the fuse box under the hood. It's GOTTA be a bad connection ..somewhere..for me at least.

 

my vsc light came on when the cel had a code for a bad o2 sensor. i guess they just light that one up for the heck of it, or to get you to the dealer...

 

The system turns off VSC because it partly relies on engine control to function correctly. Toyota is not the only company that does this. Almost every company does this when a CEL comes on for anything more serious than a loose gas cap

 

i had the exact same issue with my toyota highlander 2021. 7 warning lights came on (details below) immediately after car wash. This is the second time it happened to my car. First time i took it to toyota service center, and they blamed the battery. I replaced it battery at toyota service center, and the next morning i had the same issue after car wash. Does that mean that toyota cars can not stand the automatic car wash, or even heavy rain(???). Should i stop driving this expensive piece of shit in heavy rain.
7 warning lights are; brake system, advanced ultrasonic detecting and ranging, pre collision system, anti lock brake system, parking brake system, drive start control system, and blind spot monitor.