I have the same problem with my 98 C230. The power seats don't work when you start the car. After you drive the car for about 2 or 3 miles, the seats start working. The problem started around 90K miles and has remained the same for the last 10K miles. I have checked the fuses and found no problems.
Any ideas? Where can I find a wiring diagram?
Thanks in advance,
-Tom
tlunzer@bayarea.net