CornishDave

Yep the sensor is unplugged 

Yea the alarm turns off fine by the remotes , but something is triggering it , but can't work out what ? Wondered if the car has a water leak and something electrical is getting wet maybe ?

HI

I have just got a 2007 RX400h , we went away on holiday early August and left it parked on the drive for 10 day  , when we cam back in all the heavy rain we found all the windows open and the alarm going off with the Battery almost flat ? i had a new Battery fitted and the local Toyota people have turned off the auto window settings but the alarm is still going off & i think its to do with water/rain ? we have also disconnected the interior sensor by the mirror & i have also remove the alarm siren ( drivers rear quarter ), but its still going off and sounding the car horns !! 

my wife thinks if she press the lock button on the key 3 times this stops it going off ?

has any one come across this problem , is there away in the setting to turn off the car horns ? Grrr ..... Alarms