I think it'll be obvious once I buy a replacement relay. But, how do I remove the existing relay? Does it pull straight out of the base? And then the wired connector pulls out of the relay itself? The relay itself felt loose. But I was afraid to try too much without knowing whether that was the proper way to remove it.

This will be a HUGE improvement to my 2000 C280. Right now I can adjust the seats before I get in the car. They quit working once I shut the door. but they work again as soon as I crank the car, but only for a few minutes. Then they don't work any more until the car has been turned off for a while. Makes it very tough for my wife and me to swap the car out. She's 4'10" (i.e., short!).

Thanks!
-Harry