THe good news is that I ordered a OBDII wire (to USB) with appropriate software... it's been a long time in the waiting... but I finally did. But until it arrives, I will have ALex (my local mechanic) get a me a reading of the codes.
Thanks for stating the obvious (sometimes I just need a SLIGHT nudge)!

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2006 E350 w/ 155k miles (Daily Driver)

Previous:
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)