Joe:
Just learned thru MBUSA that there are no outstanding recalls on my '91 300E (work was performed).
Go here
http://www.alldata.com/recalls/ and lookup your year 300E to check for safety recalls, then call 1-800-367-6372 (MBUSA) and tell operator you want to speak to someone regarding recall information.
Have your VIN # handy and they'll look it up for you.
Good luck....
~Paul