Originally Posted by Jiblet

The sensors are pretty rugged, I haven't heard of anyone actually breaking one.
Of course, they can fail or "go bad" (and the batteries do eventually die; 5-9 yrs they say).

A low-pressure warning gives you the chime and solid light. A bad sensor causes the warning light to flash on and off.

Assuming the warning is activated because one or more tires had a pressure drop, once you air up a bit you still have to drive around until the signals all refresh. Sometimes that can mean a lot of driving. I've read 20 miles; I've read 100 miles....