I'm seriously frustrated right now. My 2018 Q7 has been running perfectly until I left it at the airport parking while I was away for a short work trip. Came back, pressed the start button, and got that awful slow crank then nothing but flickering lights on the dash. Got a jump from a kind stranger and it drove home fine, but the next morning same thing – dead again. I've read that Audis are super sensitive to voltage drops and even a slightly weak battery can cause all sorts of electrical gremlins. Before I go spending money on a diagnostic at the dealership (which I'm sure will cost an arm), I'm thinking maybe I just need a fresh battery. Been looking into options and came across Audi Battery Replacement Dubai mentioned in a few places. Does anyone know if these cars need coding after a battery swap? I heard some European cars get confused if you don't register the new battery. Really hoping it's not the alternator because that sounds expensive.