get this, '19 jeep

YY1 said
My '15 Renegade doesn't do the horn/light thing that I know of.

However, when the humidity dropped around the first of October, the tire pressures all dropped the next morning, from 35 to 29.

Just last week we got a cold spell (30's in the morning) and they dropped again, from 34 to 29/30) all in the same day.

Next time I will try it without a gauge.

Was the ignition on?

My '13 Ram Express has done that tire alarm scene every fall at the first sign of 30sumthin degrees. We can blame it on Boyle's Law, temp goes down pressure goes down. Sun hits the tires pressure goes back up but alarm doesn't reset. My alarm likes 39psi to reset.