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Old 01-26-2002, 07:36 PM
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How to remove/refit horns from 1994 S500 ( W140 series chasis )?

My horns on my 1994 S500 ( W140 series chasis ) just sqeak when I attempt to blow them so I want to remove them for repair or replacement. I found where they are located, one on each side of the car behind or actually inside of the bumper assembly and behind the under bumper grill.

I can not find anyway to get to them. Do I have to remove the lower engine compartment cover or do I have to remove the bumper. There must be an easier way. This has really got me stumped.

Can anyone assist me?
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Old 01-28-2002, 07:04 PM
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Surely someone knows how to refit horns on a 94' or newer W140.
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Old 02-03-2002, 12:32 PM
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Well since no one here knew how to accomplish this I thought I would post what I discovered for other new people out there.

You do have to remove the plastic front bumper to get at the horns [this will also give you access to the light wipers and a dozen other items].

The good news is that the front bumper is held on with only four bolts, two of them are the hood bumpers directly to the side of the electric radiator fans, the other two are visable just behind the bumper access panels directly below the above two bolts [one of these access panels covers the front tow hook], the extreme left and right side of the bumper where it wraps around the side of the car rides on a plastic channel. Remove the four bolts, grasp the bumper and just gently pull forward, it comes right off. Refit is exactly opposite. BTW, this is a one person job.

I removed the two horns and applied 12 volts, both were dead. BTW, they are NOT the same P/N one is a 400mhz horn and the other is 500mhz horn.

Last edited by Jere; 02-03-2002 at 07:04 PM.
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Old 02-03-2002, 01:50 PM
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Join Date: Jun 2001
Location: Omaha, NE
Posts: 962
Congratulations on your success!

I wonder what would make BOTH horns go bad? Seems strange -- must be a quality control problem at the factory. . .
'93 400E
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