I got the car back from MB Austin yesterday. I know this is a predominately DIY forum; however, I have to say that the dealership really did a great job in keeping me in the loop and in tracking down the problem.

They test drove the car extensively and finally got it to duplicate the odd thing it was doing. The computer showed a code for a faulty crankshaft position sensor as well as several communication failures with the central gateway. They replaced both of these parts and coded the central gateway unit. They then test drove the car for another 75 miles and the problem did not return. No codes returned either.

I have driven it about 50 miles yesterday and today and the issue hasn't recurred. Hopefully it's fixed. I would really like to get a few years more out of the car.

Thank you to everyone who responded with ideas. I appreciate this forum.

-Chris

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Christopher
'06 Mercedes E350 station wagon (silver/black)
'85 Mercedes 300D (black pearl/palomino)
'85 Mercedes 300SD (smoke silver/burgundy)
'79 Cadillac Sedan DeVille

'05 Toyota Camry (because always running is nice)

'85 Mercedes 300D sold back to orig. owner 8-1-06
'84 Volvo 264GL Diesel, owned 2000-2013