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Why it's hard to change LED bulbs for Toyota cars.

Time: 2019-03-06

    Most vehicles will be programmed to meet certain conditions in order for the DRL system to actually turn on. Once the conditions are met, your vehicles system will immediately supply a reduced current to dim the factory high beam bulb.  This applies to most Toyota’s with DRL’s and high beams on the same circuit. 

    After extensive research and testing of various model Toyota’s with DRL systems, we have determined that Toyota runs a pulsing system where the voltage supplied is roughly 10V-12V but pulses on and off very fast which causes an LED lamp, that is sensitive to power, to light up and shut off quickly.  This only works with older model lamps like incandescent or halogen as it will never allow the burning filament, of a factory bulb, to light up to full intensity or shut off completely.  The pulsing signal keeps the bulb in a dim state.  We now have a solution for you to allow you to run aftermarket LED headlights!

    Our decoder features a built-in capacitor. A capacitor will hold a small amount of charge that will allow the current supplied to the headlight bulb to be steady thus preventing the pulsing voltage from having any effect on the diodes of the LED lamp. Since LEDs are very sensitive to power, a pulsing voltage will also cause the diodes to flicker at the same rate that it’s pulsing.  A capacitor will also simulate a much larger amperage which will also take care of a lamp out indicator that is either triggered by the vehicles circuit, or in some cases, a CANBUS system.

    If you ever have any questions, contact us. Our friendly and knowledgeable representatives will be glad to assist you on resolving flickering issues on your Toyota and remember.