Thank you. It was the oil level sensor that gave me trouble. The insulation degraded and the wire rusted through and disconnected. See my earlier thread:

http://www.peachparts.com/shopforum/showthread.php?t=246379

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2004 E500 4Matic 138,000 miles

This DIY is in the Wiki HERE.

Thanks!

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Bill Wood - Retired Webmaster
My Personal Website
1998 Mercedes E430
2010 Toyota Sequoia
My Photo Albums

Great Wiki! I just rebuilt my harness because I didn't have all of this great info here like a part number! It took me about a few hours since I brought my old harness into work, salvaged the connectors and resoldered the connections. I had a bad oil sensor, so I had a new spare one that the previous owner gave me with the car, and its bad! I will have to order a new one.

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1991 Mercedes Benz w201 190e 2.3 5sp.
1993 Mercedes Benz w124 300te 3.2 M104

For Sale:
2000 Mercedes Benz w210 e320 Wagon
$10,500---Sold!

Thank you; I'm glad you found it useful! I hope you saved some money over the dealer's $130 tag by making your own harness.

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2004 E500 4Matic 138,000 miles

When I rewired my 94 e320 "B" Harness I only had to do the sensor wires because the battery cable itself was ok. Was the insulation good or bad on your battery cable?

PS Although the e320 L6 may not have the power of a V8, there's much more room to work and when not changing the battery cable, all the connections are on the engine's driver side.

It never occurred to me to repair the harness rather than replace it. I could not have repaired the wires while the harness was on the car because of lack of space. Judging from my photos the battery cable was OK, although you cannot see it from end-to-end.

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2004 E500 4Matic 138,000 miles

The starter and alternator wires are bulletproof. It's only the 4 smaller wires that have a problem and they are very easy to rewire.