levelr123g

does anyone know how to defeat the bulb out feature on our cars? or does anyone really understand how it works. i think it works by measuring resistance on the circuit.

dtkw

Are you talking about the warning light bulb light? Some people just said pull the cluster out and pull the bulb out.

levelr123g

no im talking about when the bulb is out the instrument cluster tells you to check whatever bulb is burned out. wheteher it be headlight, tail light etc. does anyone know how to defeat it or trick it.

mmgrad

if you are getting this message because you switched over to low voltage bulbs (LEDs, Xenons, etc...), then a proper resitor would work. or, you can have the dealer switch to XENON PRESENT, if they are the source of your problems...

If you actually have a bulb out, then change it... hehehe

levelr123g

yes i know why it works, my question is how does it work. does anyone havean article on it. does it measure resistance, does it measure an open circuit??????????? does anyone know how to disable it?

Lynn

I believe it measures wattage consumed.

amdeutsch

Sorry Lynn. I doesn't measure W as W=VI in a DC system. As V is reduced by the systems turned on I increases for W to stay the same. Try it by having your lights on when starting your car.
We all have witnessed dimming lights with added on equipment drawing additional current (Voltage regulation tolerances come into play here). Therefore, it is most likely a setable current sensor (Xenon or regular) or just a current sensor (Rest of lights).

levelr123g

well i hooked up a 194 bulb to the regular healight wires and i get no bulb out message , so i guess it measures resistance in the circuit, not wattage.