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  #1  
Old 11-13-2001, 02:51 AM
David C Klasse's Avatar
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High Beam Flashers = Broken

High beams work then pushed forward past the detent for constant on. But they don't work when pulled back for "flashing."

I assume (statistically) that the the combination "knob" (whatever you call it, with blinkers, wipers, etc) is faulty, commonly.

But I figured it's possible that I have a fuse that's burnt (and not visually; we're talking HAIRLINE). I haven't checked or changed them...

Is it possible for the highbeams to not flash (only constant on) because of a bad fuse?
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2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #2  
Old 11-13-2001, 08:43 AM
LarryBible
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I've never had trouble with the headlight circuit, but I expect that there is a relay that is energized by the stalk switch. I can't imagine that all the headlight current goes through that switch.

If you have a wiring diagram, you can verify this.

Good luck,
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  #3  
Old 11-13-2001, 08:50 PM
David C Klasse's Avatar
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Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
Hey Larry, thanks for the start...

Now, how do I determine if it's the combination stalk or the ext. lamp relay?

THX
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #4  
Old 11-13-2001, 09:50 PM
MIKE FREEMAN
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Highbeams

David the most common failure we see in the combi switch is the optical horn feature.
The same fuse is used on high or flash.
MF
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  #5  
Old 11-13-2001, 09:54 PM
David C Klasse's Avatar
CheFrac is Back!
 
Join Date: Jan 2001
Location: Mission Hills in the City of San Diego
Posts: 2,352
Wow there Nelly!
Thanks a bunch for the tip Mike. But I don't understand. Could you please reiterate your previous post?
Thanks again.

What is the optical horn feature in the combination switch!?
__________________
2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
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  #6  
Old 11-14-2001, 12:28 PM
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Join Date: Jun 2000
Location: Saugus, CA USA
Posts: 1,989
The optical horn feature is when the car sees a freind of yours it gives them a friendly toot
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