Nick Everill

I have a 2009 A3 2.0t and it runs amazing, no mechanical issues whatsoever.

I live in Phoenix and for some reason whenever it is really hot outside, I lose all electronics inside(cluster, radio, dome lights, a/c controls etc.).

Everything works at start then after 5 min or so, it all goes out. If I get on the freeway right after start, the issue is non existent.

Is there some sort of electronic breaker/regulator or something that kicks off at high temps? It seems like if I get air under the hood right away, I have no problem.

Thanks in advance