I installed a battery in a 2007 Audi A4 Convertible on Monday, towards the end of the night. The customer came back in yesterday saying that her key fob didn't work now...
So my boss come out to me, ranting and raving... Blah blah blah.
Since it is plausible that the ECM lost the fob programming during the battery install I figured, sure... Let's have a look.
I didn't even make it out the door of the shop. I pressed the lock and unlock buttons on the fob and watched the lights on the car blink. Turned and looked at my boss and said, Huh... imagine that!
Then handed him back the keys and walked away.