2012 Chevrolet Sonic LTZ: Bulb Check
February 28, 2012
The three-second rule is alive and well in the automobile industry, where all of you car's warning lights must perform a "bulb check" each time you fire up your machine.
If, as they should, the lights briefly come on then go out, you've learned two things. First, the bulb hasn't burnt out and the warning circuit is working; And second, as we all know, lights that go out after the bulb check period indicate the lack of a problem with that system. Or you haven't yet put your seatbelt on, or you forgot to release the parking brake, or your high beams are on, or the cruise control is armed, or whatever.
That's the easy part, but who is going to notice lights that don't come on? To do that you must first know which ones you're supposed to have. You know, the RTFM part.
In the case of our 2012 Chevrolet Sonic, the three apparent dark circles in the upper right corner are not the sign of a problem. There are no lights there, is all. They're blanks, room for future expansion or a mere styling cue to make eveything look even.
Dan Edmunds, Director of Vehicle Testing @ 3,494 miles