It's supposed to be sunny today and up to 35F, so I will spend some time at lunch checking all the connections, trying to run some voltage tests, etc.

Brian, hope you are on the right lead, I don't want to replace the starter next.

The only thing I don't understand is the difference in cranking times.

I will try to explain by example:
1st attempt - glow +10 seconds.....cranks for 5 seconds and will not continue to crank
2nd attempt - glow + 10 seconds.....cranks for 20 seconds and will not continue to crank.

It does not go from a fast crank to a slow crank to no crank. It just stops cranking. Not gradually as if it is losing battery power. Just goes from cranking to nothing.

More later. Thanks for the help so far!

Clay

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2002 E320 Sedan 93K Designo Mocha Black Metallic!
1995 E320 Wagon 205K Black Wagon
1982 240D 183K SloPoke

I believe each of these cars are the final production year for that model.