Of course just 2 days before Christmas and my 2000 ML320 is dead in the garage. Good battery, cranks strong, but no fuel. Before I get to replace parts, I need to trace the electrics. The relays are good (swapped w/ horn) but there is no juice to the pump fuse. There is good power elsewhere in the fuse box.
Would any of you good souls have an electrical diagram or steer me to one online? I really don't want to spend $175 for a shop manual if I can find just the electric schematic.
Thanks

Another thought that came from a neighbor who mechanics some. He wondered if I'd hit the garage wall when I last drove in and activated the emergency fuel shut off. No....but could there be corrosion on the terminals? Where is it located? Is there a CB somewhere that could be shutting down the power for the fuel pump?

I found & downloaded the schematic and noticed that on every page that had the fuel pump, wires went to the AAM which apparently is also the brain of the security system. That got me thinking, so I went out to the garage and locked the car, unlocked it and it started right up. It runs fine again, as though nothing had happened. Something - somehow, activated the fuel shut down relay & that's one I'll never figure out.

As it turns out, the thing fooled me. I was out of town and went to leave on a Sunday only the car wouldn't start. No 12v power to the main fuse box. Mon. AM called the local MB dealer and they said have it towed in. Just on a lark I tried to start it before calling for a tow, and it started. Long story short (and $400 shy) I drove it in and they replaced the crank position sensor. So far so good.