Can I use my Audi's passive entry system with a dead key fob?

I'm locked out of my Audi and my key fob's battery is dead. Can I still use the passive entry system to unlock my car?

Yes, you can still use the passive entry system even if your key fob's battery is dead. Follow these steps: 1) locate the physical key on your key fob and use it to unlock the driver's side door, 2) once inside, press and hold the unlock button on the key fob for about 5 seconds, 3) this will trigger the key fob's emergency battery and allow you to start your car.