Does anybody else's headlights flash once when the car is switched off? I first noticed this a few months back, i parked the car up on the drive, locked it and the headlights flashed once about a minute after. One of my headlight bulbs blew the other day and they flashed just after I had replaced it. I am using Osram Nightbreaker bulbs but I can't see these causing the issue as they're direct replacements. I've had the car checked out by Audi and they couldn't find/replicate the fault. I think my battery is on its way out because it struggles to start sometimes could this be related? Anyone know what could be causing the lights to flash?