I believe that if rain is 'heavy' enough - all mini convertible alarms will go off - and it needs a factory fix. I'm not rushing back to the dealer to let them strip car down to investigate - I'd rather wait for the recall notice that I'm sure will eventually be released.
As for pressing alarm button twice, yes you can , and yes it will sort the problem out, BUT
what's the point of fitting an alarm facility that you can't use - I expect the car is not as secure when the interior motion detector is disabled, also, in the UK, I'm not always sure if it's going to rain whenever I lock the car ! Perhaps I need to move to LA or some other place without rain storms!
