Isofix child seats trigger it too, grr.
Ran around with the base and seat in for a week when we were at DEFCON 2 awaiting for our little guy to be born, then finally get him chilled out to leave hospital for home, click into the car, bing bing.. often.
Didn’t wake him though! But pretty distracting- would be useful to have a “yeah there’s something there now quit nagging” toggle