OK. So I have a 07 Passat with about 150k, very well maintained and mostly trouble free.
Just yesterday, I was idling with the a/c on and the car just stopped, like it stalled, never happened before. So I go to start it and it won't turn over, makes the weak battery noise. So I assume the battery suddenly failed.
I take the battery to Advanced Auto and it checks out fine. So I put the battery back in and the car works perfectly, but the a/c doesn't work at all. The light comes on (Climatic) but the compressor does not kick in.
The fuses are OK.
So, is there a relay I can check before I bring it in? What else can I check?
Also any theories on what the hell happened would be welcomed. I think I have an internal battery problem.