I've had this fault on and off for over a year. It started when my wipers would come on after I'd lock my central locking.

This would then drain my battery and set off my car alarm.

It would stop doing this after a week or so. Fast forward a year and its doing the same again. This time my headlights would come on also.

What I do notice though is a very high pitch noise when I activate my central locking. This would normally disapear after a few seconds, but it remains all the time.

i assume something is drawing power from the battery but with my wipers and lights coming on as well, is there another issue?

2006 1.6 VTS