S4 JJL

Is the siren sound a positive indication of a coming Turbo failure?

CatOne

Everyone's car has a little siren sound (you can hear it with the windows rolled up most clearly) when the oil is cold. It's absolutely noticeable. It becomes less audible as the car warms up, but it's still there.

On cars where the turbos are getting unhappy, the siren sound gets markedly louder. Unless you notice a change, there's probably nothing wrong. Don't be paranoid because you hear a faint siren sound -- that's what turbos do.

-B

GRocky

if you roll down the window and still hear a moaning spool-up, you're looking at a few new K03s. Otherwise, classify it as "normal."

CatOne

hehe that would be fun

-B

S4 JJL

Thanks, so far it's a faint sound. Hope it stays that way!

George @ BostonAudi

The 2001 is silent unless the windows are down.

Faint is definitely okay though, when one has the "real" siren sound, they know it. Its unmistakable.

Jim De Arras

And well under the engine noise.