Power Seats Failure
 

1999 C280, 95K miles.

The power seats in both passenger and driver are failing to move after car startup. I only regain control after 15-30 minutes of driving. I checked the battery voltage hours after driving and had 13.6V. I checked the voltage a day after driving, early morning, 12.4-13V was the range.

I also checked the fuse box in the front of the car, but I failed to find any problems. I am dumbfounded because the power seats will work after some time, since if it would have seized altogether, I could have checked the motors, and etc.

I havent idled the car for 30 minutes to see if that will make the seats work, but I assume it will since I have idled for 10-15 minutes and then after a couple of minutes of driving the power seats work again as opposed to the 15-30 minutes of driving.

Thanks for the help.

Seats
 

If you have the memory control seat could be the control unit

Welcome to the forum. You will find the search feature is a powerful tool on this site. I searched on "C280 seats" and found this thread which likely contains the information you are looking for.

http://www.peachparts.com/shopforum/tech-help/132934-98-c280-power-seat-problems.html

I am fairly certain of this since I had the same problem and many others have as you will see when you read the thread!

Good luck!

Mike