My wife's octavia 1.9tdi 54 plate.

She's had trouble starting it, and so had the battery replaced today.

When the new battery was fitted, there is now a buzzer going off constantly in the boot. Sounds like the CD changer.

It happens when the key is both in and out, cd's in, and removed. The changer still works ok.

Has anybody come across this problem before? It's doing my bloody head in!!

Sorted now.

Realised it was the trailer indicator buzzer. Went back to where the battery had been fitted, Pulled the in line fuses and the buzzer stopped.Replaced them and the buzzer seems to have been reset. I haven't yet tried the trailer on it, but that was it.

Thanks for the suggestions anyway.