Hi there. We have a L405, we moved into our new house in September. And have just finished building our new interested garage. We parked the car in there for the first time a couple of weeks ago and the alarm goes off most days at random . There is no pattern , it goes off whether it’s locked or not. I’ve locked and unlocked it. Started the car. And it still goes off. It does stop once you drive out of the garage. If parked on the drive or in other locations we have no problems. When we looked to see why the car alarm last went off it says attempted start. Is there some frequency that’s communicating with the car to make it think it’s being started ? I know we don’t have remote start set up on cars in the uk. It must be something in our house , but I don’t know what. Land Rover have been zero help as have other garages. Any ideas ?