HID Lighting causing Bulb Light on Dash
#2
RE: HID Lighting causing Bulb Light on Dash
Hi,
I assume that the HID's are working when the bulb fail;ure warning lights.
I assume that the wattage of these bulbs is not the original rating.
The bulb warning device senses current as a voltage across a resistor. Change the bulb wattage and the wrong voltage is seen hence the warning device activates since it expects to see a voltage within a given range.
It suspect it may be possible to change the setting somewhere (i.e. in the lighting ECU) but I do not currently know how to do this. Worth seeing if MB Star diagnostics can do it. I guess not since MB won't want this rating changed except for special vehicles.
However increasing the rating of the bulbs is not a good idea because you run the risk of burning the wiring out. It has been designed to carry a certain current. Overloading the wiring can lead to fire.
Stuart
I assume that the HID's are working when the bulb fail;ure warning lights.
I assume that the wattage of these bulbs is not the original rating.
The bulb warning device senses current as a voltage across a resistor. Change the bulb wattage and the wrong voltage is seen hence the warning device activates since it expects to see a voltage within a given range.
It suspect it may be possible to change the setting somewhere (i.e. in the lighting ECU) but I do not currently know how to do this. Worth seeing if MB Star diagnostics can do it. I guess not since MB won't want this rating changed except for special vehicles.
However increasing the rating of the bulbs is not a good idea because you run the risk of burning the wiring out. It has been designed to carry a certain current. Overloading the wiring can lead to fire.
Stuart
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pmlucas
Mercedes SL Class
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01-08-2008 12:12 AM