So, I live in brisbane and we've had all this rain. Anyways, that's just something I thought I might add. So to the point, I was driving down the road about 3 minutes after I unlocked the car, and the door open light comes on then goes off, about 5 seconds later it comes on and goes off again. then flashes a few times, and now it's constantly on. So Now I cant lock the car because the thing thinks its door is open, when everything is closed. It's not the boot because the interior light come on when it did it. Pretty sure its the passenger door, as when I'm driving open any other of the 3 doors, the car beeps at me except with that 1 door... So I need your wisdom! What is it, how can I fix it and how much is it going to cost ?? Thanks guys!