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A group of tell-tales showing lights for "brake fluid", "stop lamp" and "check engine" Graphical tell-talesA tell-tale, sometimes called an idiot light [1] or warning light, is an indicator of malfunction or operation of a system, indicated by a binary (on/off) illuminated light, symbol or text legend.
A check engine light or malfunction indicator lamp (MIL), is a tell-tale that a computerized engine-management system uses to indicate a malfunction or problem with the vehicle ranging from minor (such as a loose gas cap) to serious (worn spark plugs, engine problems or a faulty oil valve, etc.).
Later they developed some of the first transistorized warning lights (Visi-Flash trademark) using standard 6-volt lantern batteries, which either blinked in timed intervals or had a steady light. Gerry Dietz reestablished the company in Hong Kong and as of 1956, they moved their production outside of the United States, first to Hong Kong until ...
Early road vehicles used fuelled lamps before the availability of electric lighting. The first Ford Model T used carbide lamps for headlights and oil lamps for tail lights. It did not have all-electric lighting as a standard feature until several years after its introduction.
The result is an electronic signal for remote indication. Thus, a warning light on the instrument panel illuminates, indicating the presence of metal chips. [1] Chip detectors may be positioned in the application with a self-closing valve/adapter through either a bayonet or threaded interface.
Warning light may refer to: Aircraft warning lights, a device used on radio masts and towers and other tall structures to prevent collisions; Idiot light, an indicator of malfunction of a system within a motor vehicle, especially if used to replace a gauge Check engine light, to indicate malfunction of a computerized engine management system
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Excessive oil pressure may indicate a blocked filter, blocked oil gallery or the wrong grade of oil. Low oil pressure indicates worn bearings or a broken oil pump. Some vehicle engines have an oil pressure switch that switches a warning light on at low oil pressure. Some vehicles have an oil pressure gauge in the dashboard or instrument cluster.