Just a couple of other thoughts:

First, have you pulled and cleared all the codes? There could be a code that points to the problem. Intermittent neutral safety switch failures have been known to occur.

Second, ruling out the starter itself being bad, some of the starters on these cars have shims on them. Whether or not the car has shims is dependent on the individual car. Some have none; some have one or two. I don't know if incorrect shimming would cause the solenoid to stick, but it might be something to research.

UPDATE: Also, although the fuses may look good, looks are deceiving. Pull out fuse #8 and check it carefully. If you don't have a replacement fuse, clean up the ends with some fine sandpaper and reinsert.

__________________
1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles

If you replace fuse #8 and it's still not working right, I would pull the instrument cluster and jumper terminals 30 and 87 of the K38 relay. This is the relay that disables the ignition if the anti-theft device under the passenger floorboard is unplugged. This link will show you where the K38 is and how to jumper it. http://www.peachparts.com/shopforum/...1993-w124.html

Don't worry about unplugging the anti-theft module; just go for the silver ice cube relay (K38) and bypass the starter kill circuitry. The instrument cluster will come out if you can hook a 90 degree pick behind each side and pull it straight out towards you. You might have to extend the telescoping steering wheel to get it out. Mercedes makes a special hook tool for pulling the instrument cluster out (pic), but you can improvise.

Good luck and let us know how it goes.

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__________________
1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles

Fuse position 8 says its for the tail lights.
Is that the correct one?

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Check fuse 5 as well. Need Help...on vacation, car won't start

__________________
1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles

****FIXED*****


It turned out the MAIN wire for the starter was BURNT OUT

I had to buy a 6gau copper wire from home depot and run it for the starter and the starter has been fine since

Hey, dude. Jump starting a car is actually not so easy, maybe you're doing something wrong ? I had a similar issue, and the jump starting has actually saved me. I have replaced the battery and the problem was solved. I recommend you to check out this site otopartshop.com, you can find a very detailed guide on how to jump start a car. Maybe it's going to help you. It worked for me, so, I hope that it's going to be useful for you too.