Am starting to get a bit irritated by the Tesla alarm (or, rather, the rock music on top!) so I wonder if there's something to this suggestion. Our M3 seems ridiculously sensitive and we're going to have to start apologising to neighbours (and work colleagues) soon.
I was lying in bed about half an hour ago (c.11pm) when the alarm (and music) went off. (Our bedroom window is the closest to the car.) Terrifyingly loud - if I'd been wearing underpants, I'd have needed to replace them. I remembered something I read on this forum and frantically called up the app and hit a button to tell the car to calm down (sadly, in my panic, I hit the frunk release control, so had to go out and shut the bloody thing). Gave me an opportunity to check the dashcam footage. Nothing. I suspect no more than perhaps a moth trapped in the cabin. Have switched off the sentry mode in an attempt to stop waking the neighbours.
Sadly, that's the fourth embarrassing alarm situation in the four weeks we've had the thing. Once on holiday (alarm and music); once triggered by remotely switching on the climate (just alarm), as per the OP, and once a few days back when the good lady doctor was seeing patients (alarm and music). No apparent reason for any of them.
Now lying in bed, wondering if it's going to happen again. I'm feeling a bit tense and cheesed-off, to be honest with you...!