Will all check engine lights go out after 40 or so ignition resets if the code is no longer being thrown ?
and where is the OBD II connector on theses late models, under the Drivers Dash?

Will the Auto Zone OBD II Scanner work to reset the CEL.

I changed the glow plugs on my 97E300D and when I was check the Ohm via the Relay harness I forgot to plug it back in before attempting to start it. This through a CEL. Ive driven about 500 miles and it is still on not sure how many ignition resets, though I will try the 40 number tonight.

Any advise is greatly appreciated.