idiot light

Etymology
, suggesting that even a stupid person with no mechanical knowledge can recognize a problem when thus indicated.

Noun

 * 1)  Any warning light or indicator on the dashboard of a car, designed to alert the driver to problems, such as the parking brake being on or the oil being low.

Translations

 * Finnish: varoitusvalo
 * French:
 * German: Warnlämpchen, Signallämpchen
 * Italian:
 * Japanese:
 * Spanish: