Hello, I am trying to figure out why my 2013 Audi Q5 s-line is throwing a fit by throwing a check engine light, the abs, BRAKE, and hill decent lights that are coming on all at the same time.

I have changed the brakes and have changed the brake sensor that the check engine light has told us to change. I drove my car all day yesterday and it didn’t throw the lights but once I started it up and backed down my drive way it threw a fit again. And when I back up or stop suddenly at a slow speed the brakes kind of like jutter. Somewhere is said i need to check the brake fluid and I’m going to do that but other than that I don’t know what else it could be.

Can someone help please?

 

My wife had a similar issue in my Q5 while trying to pick me up.
on the highway, all of a sugen the windows lowered and all the warning lights flashed.
Dealer doesnt k ow what happened