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Old 01-13-2003, 01:09 PM
Dave Bunker's Avatar
Join Date: Aug 2002
Location: Elk Grove, CA. 95758
Posts: 90
bulb indicator stays on??

I can't get my bulb indicator light off. I recently changed the front halogens. Could there be a problem with a mis-match set of lamps? Got them at Kragen Auto parts. Checked all bulbs, all are ok, except a lower door light. I don't think that is on the same circuit however.
Dave Bunker
1987 420SEL, 180k strong Blu & Grey
2004 Road King Custom
Sacramento, CA
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Old 01-13-2003, 01:18 PM
Potomac German Auto
Join Date: Mar 2002
Location: Frederick, MD
Posts: 407
Even if the light that illuminates your trunk when open can cause that light to stay on. Check all your bulbs carefully. Tag lights to.
1997 C230
2002 ML320
2000 BMW 528I (WIFEY'S CAR)

"Excuses are crutches for the unfounded."
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Old 01-13-2003, 02:20 PM
yal's Avatar
yal yal is offline
Join Date: Oct 1999
Location: New York, Long Island
Posts: 2,705
I had the same thing happen when I changed one front bulb. The problem was that the connector to the bulb was not set in properly. I wiggled it around while the bulb was on (not recommended by the way) and the indicator went out. Then it came on again after sitting over night. I got fed up and bent the bulb prongs slightly so that they would make a tighter fit with the connector and I have had no problems since.

Hope this helps.
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Old 01-13-2003, 06:30 PM
Posts: n/a
Make sure all the light in the same circuit (EG: Righ/left parking light) (right left parking light) etc are of the same wattage.
The ''burnt light'' indicator is activated by a difference in watts between right and left. A bad contact on one light is enough to trigger the system.
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Old 01-13-2003, 08:21 PM
Registered User
Join Date: Jun 2001
Location: Omaha, NE
Posts: 962
Exactly WHEN does the bulb-out light come on? The logic of the circuit is that the light first comes on when you first energize the circuit with the bad bulb. That really helps narrow down the problem. For example, if the light comes on only after you step on the brake, you know the problem is in the brake light circuit.
'93 400E
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Old 01-13-2003, 10:36 PM
Registered User
Join Date: Apr 2002
Posts: 139
the wattage for each bulb is stamped close to it or in your manual.
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Old 01-14-2003, 08:28 PM
Registered User
Join Date: Oct 2001
Location: around Charlotte NC
Posts: 573
see other string


There is another active sting on this as well. I just found a license plate bulb out and that fixed my indicator. Other hints have included trunk lights as well.

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Old 01-14-2003, 08:38 PM
Registered User
Join Date: Apr 2001
Location: Joliet Illinois
Posts: 309
Bulb out indicator

The front headlights must be matched. The bulb out indicator senses an imbalance in the left and right circuits. Even if the same brand replacement bulb is used, there can be a current imbalace. I believe changing both headlights will solve the problem.
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