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#1
10-31-2006, 10:52 AM
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*edit - What triggers "LAMP DEFECTIVE" message?
I'm trying to pinpoint which bulb is setting off the LAMP DEFECTIVE message in my 97 E420. The message comes on at light knob position 1. This means city/parking lights, front sidemarkers, and rear tail lights? That makes it easy b/c i can examine only 3 sets of bulbs.
But I wanted to be sure that the warning message does not come on for those lights that are not activated yet; eg. if the 3rd brake light was defective, would that still trigger the msg to go off at position 1 and brake pedal not engaged?
__________________
Current cars: 2001 MB E55 AMG 2003 Honda S2000 2000 Honda CRV Gone but not forgotten: 2004 BMW 325i 5sp sport 1999 BMW 540i sport 1997 MB E420 1995 BMW M3 coupe Last edited by ProV1; 11-01-2006 at 05:43 PM. 
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#2
10-31-2006, 11:50 AM
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What bulb does the manual call out?
__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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#3
10-31-2006, 11:51 AM
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2825 5W bulbs
__________________
Current cars: 2001 MB E55 AMG 2003 Honda S2000 2000 Honda CRV Gone but not forgotten: 2004 BMW 325i 5sp sport 1999 BMW 540i sport 1997 MB E420 1995 BMW M3 coupe
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#4
10-31-2006, 12:27 PM
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on the W210 chassis there is a bulletin on installing a headlight repair kit to reduce the voltages...P-SI-MBNA-82/109, August 1998
The kit comes with needed parts & all new bulbs (except xenon).
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#5
10-31-2006, 12:29 PM
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The voltage should be standard for 12v DC. It is not high.
You should check the bulb sockets which might loose and caused arcing with the bulbs. When it happened the voltage can be very high due to electric arcing and will blow your fuse soon. Repair or replace loose sockets.
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#6
10-31-2006, 11:41 PM
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thanks guys.. maybe it's not the bulbs.
curious though, why do i NOT get the error msg when I turn the lights on while the key is not inserted?? what is different when the key is in vs. key out?
__________________
Current cars: 2001 MB E55 AMG 2003 Honda S2000 2000 Honda CRV Gone but not forgotten: 2004 BMW 325i 5sp sport 1999 BMW 540i sport 1997 MB E420 1995 BMW M3 coupe
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#7
11-01-2006, 08:46 AM
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"why do i NOT get the error msg when I turn the lights on while the key is not inserted?? what is different when the key is in vs. key out?"
When you turn the lights on, it is just feeding the power to the lights. When the key is insert, it is feeding to the ECM as well to show message.
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#8
11-01-2006, 08:54 AM
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Quote:
you might have a point here. on the driver's side sidemarker socket, the light won't come on if i insert the bulb all the way in. rather, i'd have to slightly pull it out and play with it a bit for the light to come on. interestingly the passenger side light also won't come on if the driver's side is off. this is suggesting that the socket might be going downhill. does anyone know the oem part # for the sidemarker sockets, and price? thx!
__________________
Current cars: 2001 MB E55 AMG 2003 Honda S2000 2000 Honda CRV Gone but not forgotten: 2004 BMW 325i 5sp sport 1999 BMW 540i sport 1997 MB E420 1995 BMW M3 coupe
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#9
11-01-2006, 05:44 PM
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edit- what triggers the LAMP DEFECTIVE message?
I'm trying to pinpoint which bulb is setting off the LAMP DEFECTIVE message in my 97 E420. The message comes on at light knob position 1. This means city/parking lights, front sidemarkers, and rear tail lights? That makes it easy b/c i can examine only 3 sets of bulbs.
But I wanted to be sure that the warning message does not come on for those lights that are not activated yet; eg. if the 3rd brake light was defective, would that still trigger the msg to go off at position 1 and brake pedal not engaged?
__________________
Current cars: 2001 MB E55 AMG 2003 Honda S2000 2000 Honda CRV Gone but not forgotten: 2004 BMW 325i 5sp sport 1999 BMW 540i sport 1997 MB E420 1995 BMW M3 coupe
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#10
11-01-2006, 11:23 PM
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The 3rd brake lamp on 96-98 w210's never seems to activate the bulb check
message. I replaced 2 today that were burned out, yet there was no message in the cluster. I think the factory forgot to tell the lamp monitor to watch the HMSL. If you have bunk connections with high resistance, that will trigger a warning message as well. Even if the lights are on and working ok. DR.D
__________________
Dr.Diesel - Shop Foreman Master Guild Mercedes-Benz Technician. Think the dealer is expensive? Do you know how much it costs to train a dealer tech? Or buy the required MB special tools to have on hand? 
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#11
11-02-2006, 09:04 AM
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thanks. i still think it's my driver's side sidemarker socket, b/c i can see lots of green gunk & corrosion on the metal surfaces that contacts the bulb. I tried to squeeze a mini sandpaper in there to clean it out but i can't get rid of all of it.
is there a better way to clean the socket?
__________________
Current cars: 2001 MB E55 AMG 2003 Honda S2000 2000 Honda CRV Gone but not forgotten: 2004 BMW 325i 5sp sport 1999 BMW 540i sport 1997 MB E420 1995 BMW M3 coupe
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#12
11-02-2006, 11:52 AM
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I have used small "needle" files before. And also put some silicone/dielectric grease in there when you are done to help prevent corrosion. However, I think you need to consider what M.B.DOC said since normally he is correct. Although I am not sure if the headlight issue he mentions relates to your issue.
Mike
__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine) 1988 F150 144,000 miles (leaks all the colors of the rainbow) Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra
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#13
11-02-2006, 02:29 PM
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fyi MB makes a kit with the pins to replace the sidemarker pins when they get corroded. I've used them on many 220's it probabaly applies to your situation as well. 000-540-09-66
__________________
 1980 500SE/AMG Euro 1981 500SEL Euro 1982 380SEL 1983 300TD 1983 500SEC/AMG Euro 1984 500SEC 1984 300TD Euro 1986 190E 2.3-16 1986 190E 2.3 1987 300D 1997 C36 AMG 2003 C320T 4matic past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350
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