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Light guides are commonly used to distributively light dashboard displays, [155] and premium vehicles are beginning to use distributive systems for lighting such items as door locks, window controls, and cup holders. [156] Distributive exterior lighting has also been explored, with high-intensity central light sources. [157]
Engine bay lighting; Fog light (also called foglamp) Spotlight; Headlight (also called headlamp) Headlight motor; Interior light and lamp, Center dome, Vanity-Sun visor and rear side, Floor and Door-front, back, Boot lamp or Trunk lamp; License plate lamp (also called number plate lamp or registration plate lamp) Side lighting
Also, keep in mind that ignition is based solely on the amount of natural light present and not on the height of the sun, so "unwanted ignition" may occur, for example in the presence of compact clouds associated with a significant drop in ambient light on the sensor (e.g., when there is a storm). To avoid this, twilight switches can be ...
The Twilight Sentinel system uses a photoelectric cell to measure ambient light levels. This cell is typically mounted on the dashboard of the vehicle. [7] The system is designed to activate the vehicle's exterior lights when the ambient light falls below a certain threshold, typically corresponding to twilight conditions.
Cars have controls for headlamps, fog lamps, turn signals, and other automotive lighting. Turn signals are activated by the driver to alert other drivers of their intent to turn or change lanes. [12] While the modern turn signal was patented in 1938, [13] electric turn-signal lights date back to 1907. [14]
Depending on the system, the vehicle is automatically unlocked when a button or sensor on the door handle or trunk release is pressed. Vehicles with a smart-key system have a mechanical backup, usually in the form of a spare key blade supplied with the vehicle. Some manufacturers hide the backup lock behind a cover for styling.
Inasmuch as "programming" fobs is a proprietary technical process, it is typically performed by the automobile manufacturer. In general, the procedure is to put the car computer in 'programming mode'. This usually entails engaging the power in the car several times while holding a button or lever. It may also include opening doors, or removing ...
Full-voltage vs. parking light headlamp on European-market Volkswagen, 2007. Depending on prevailing regulations and equipment, vehicles may implement the daytime-running light function by functionally turning on specific lamps, by operating low-beam headlamps or fog lamps at full or reduced intensity, by operating high-beam headlamps at reduced intensity, or by steady-burning operation of the ...