What Does the Bulb Failure (Exterior Light Fault License Plate Bulb Brake Light Bulb) Warning Light Mean?

Posted on: May 24, 2018, by :

The only way to reset the light is to have the computer systems checked on your vehicle to see why the EVIC is displaying perform service. This could be anything from the EVIC problem to a simple service reset. You…

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In order to help the driver maintain their vehicle, manufacturers have been using computers and sensors to monitor just about everything in a car. Modern cars are sophisticated enough now to detect when any exterior lights have stopped working. When a bulb goes out, the overall resistance in the circuit changes, which then affects the voltage for that circuit. The computer monitors the circuits for all of the exterior lights for any changes in voltage and then displays a warning light.

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What Does the Bulb Failure (Exterior Light Fault, License Plate Bulb, Brake Light Bulb) Warning Light Mean?

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In most cases, the car is still driveable. Now this doesnt mean you should ignore the light. The exterior lights are very important for warning surrounding drivers of your cars position and actions. Having non-functional lights can also make you responsible for damages in the event of a collision.

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The computer will switch on the bulb failure warning light when it detects any non-normal voltage in any of the bulb circuits. If you see the light come on, check all of the bulbs to find the one that is not working. Be thorough when checking the lights as modern cars have quite a few that can turn on the warning light. Some harder bulbs to find include license plate bulbs, turn signals on the side mirrors, the yellow parking lights at the front of the vehicle, and the tail lights at the back that come on with the headlights.

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Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance…

When you find the bad bulb, replace it and the warning light should turn off. It is possible for false positives to occur in which case the entire circuit would need to be inspected for any damage.

The bulb failure light turns on when any exterior light on your car isnt working. Its important to fix this so others can see your cars position.

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What Does the Bulb Failure (Exterior Light Fault, License Plate Bulb, Brake Light Bulb) Warning Light Mean?

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