Yesterday I noticed my sunroof, windows, & seats stopped working,however the seats work when the doors are open. The fuses all seem good and I moved them around to make sure they were making good contact. Has anyone ever had this happen ? Is it a relay? Where can I find this relay or fuse? This happened once before I put the hazard switch on and everything worked again.The hazards are working,but not having the same curing result. Thanks for any help!The car is a 1991 300E 4-Matic.