I have a 1994 C280 with 90K miles. I was stuck in a long traffic jam on the highway on the weekend and watched at my coolant temp went up to 115 degrees before the fans kicked in. The fans cooled the car back down to about 105 before shutting off. I've done my searching and from what I've read, this indicates there is a problem with the low-speed fan, which should have come on by itself at around 105 degrees. I would like to check the fuses on the relay that control fan operation, but I just don't know where the relay is. I've checked my Haynes manual, but as it doesn't include the C280 version, I've had no luck.

I know that the answer is going to be right infront of my face, and I'll feel like a big idiot when I find it, but could someone tell me where to find the relay so I can check the fuse?

Just to assist in the diagnosis, I understand that having low refrigerant pressure in the a/c system can sometimes cause the fan to not engage. I don't have any refrigerant at all, as my compressor leaks and I have to replace it later this month.

Thanks!

Jonathan