Driving a 2002 A4 quattro. When the car has not been driven for a day or two, it will issue 3 or 4 beeps (more like chirps maybe) from the right rear.No maintenance messages. And it only does it when its been sitting for a day or more. Car is garaged. battery is new (just a month old). Any thoughts?

 

not sure which side the fuel pump is on the b6 but it could be that just priming the engine for a start up. it should be fine unless u notice that ur car loses power during higher rpms

 

While doing some research I saw a note suggesting that this type of beeping might be caused by a weak alarm siren battery. That was in a UK post; does anyone know if there is a separate alarm siren battery in the US?

 

Yes the alarm uses a seperate power source so that when the car isn't on your battery isn't drained.

 

Here's an update for anyone else with this issue. It definitely is the alarm siren beeping, which is apparently a warning that the dedicated alarm battery is low on power. It is a hassle to replace the battery (the whole unit is one piece).

I realized that the car hadn't been locked (e.g., alarm on) in 3 or 4 months, so I decided to see ifmaybe the alarm battery only charges when the car is locked. After leaving the car locked for a week, we haven't had the 3 beeps since. I can't be positive that this was the fix, but I'm thinking that was it.

 

That's a good info to know. So I won't be panic if I hear the beep sound next time 'cuz I am also having a B6.