Hi everyone. 1st time on. Have the 2005 convertible Mini Cooper which we leave covered at our caravan storage compound. Every week we travel down there to give it a run out. This time, took it for a run. Left it for about 20 mins, and the horn started of its own accord. Pressed the horn in, and it stopped. Once again, it went off after a bit, and continued to do so. Only stopping for a short while after I had pressed it in. Had to remove battery cable in the end, as couldn't risk it going off whilst I wasn't there.
Any answer to why it should do this.....