SHUT UP! we say. Brooklyn resident complained about noise to 311 more often than other borough. From New York 1:

Brooklyn residents have more complaints about car alarms than residents of any other borough.

According to the New York Post, the mayor’s office reported that
the most complaints to the 311 line about car alarms came from
Brooklyn.

Oddly enough Brooklyn only has half as many cars as Queens, but
more cars are apparently stolen in Brooklyn than in any other borough.

The Post reports that 568 car alarm calls to 311 came from Brooklyn
last year out of the 1,865 total complaints about car alarms.

The City Council is doing its part to stop the noise pollution.
Last year it banned motion sensor-activated car alarms that don’t
automatically shut off after 3 minutes.