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#1
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Xenon install - Bulb Inoperative Warning
Just installed aftermarket Xenon lights on a 99 E320 (W210). Lights are fine but am getting the 'Bulb Inoperative' warning message in the instrument cluster. Looked through thread and found the dealer can make adjustment in computer for xenon bulbs. 3 different dealers and no go because that functionality was not put in until 2000 and mine is a 99. Installed a 12volt 1 watt bulb on either side of the original headlight connectors hoping to trick the computer and that did not work either. Anyone have other ideas on how to resolve this issue?
Thanks Benjamin Jarrett |
#2
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To break you the bad news:
The "Bulb out" light will most likely stay on because the Xenon light use 35 watts , while your old lights used 55 watts. The car thinks that a bulb is out because the Xenon lights use LESS power than the old lights.
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1987 mercedes 300E 1995 e320 conversion(hated the 300e grill) HID/Xenon (D2S) Keyless Entry Monochromatic Paint (Custom Blue) Smoked Tails Flat Badged (front) Debadged (rear) custom "carbon fiber" console 18 inch HP EVO rims Sold! Now I drive a Monte Carlo SS http://memimage.cardomain.net/member.../352975_67.jpg http://memimage.cardomain.net/member.../748335_24.jpg |
#3
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i assume that the system is wired so that the original wire for the light is used to power the xenon?
if so, you need to add a resistor in parallel with the current system, to lower the resistance to the 'right' level. Power = Volts x Amps old power = 55 = 12 x amps => 55/12 = 4.58 amps new power = 35 watts = 12 x amps => 35/12 = 2.92 amps so you need to loose 4.58 - 2.92 amps = 1.66 amps 1.66 x 12 = (roughly) 20 watts 12/1.66 = resistance = 7 ohms so - you need a 7 ohm, 20 watt resistor (BIG!!!!) - or a 20 watt bulb across the power to bulb to ground connection. IF the power to bulb is used just to power the 'black box' and the main power is taken from the battery, then you need to stick a bulb in between there and ground - try a 20 watt to start withj (im not sure quite how smart the syetm is)... hth guy
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C140 420 CL W114 280CE pimpmobile W114 250/8 Hillclimber with M110 and bike carbs - got any hot cams? |
#4
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wattage
well if that is the case then by going to a 100/80 bulb (jc whitney, ebay etc
![]() just a 2 cent thought
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Thanks Much! Craig 1972 350sl Red/Blk 117k 1988 420sel charcoal/Blk 140k 1987 420sel gold/tan 128k See My Cars at:http://mysite.verizon.net/res0aytj/index.html Pound it to fit then Paint it to match! There is only First Place and Varying degrees of last! Old age and deceit will overcome Youth and Enthusiasm every time! Putting the square peg in the round hole is not hard... IF you do it fast enough! Old enough to know better but stupid enough to do it anyway! |
#5
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Hop over to Club202.com and check the threads there. This issue has been solved by the young enthusiasts with more free time than us old folks.
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