Fellas, I appreciate your help, I really do. However on the earlier e53s the relay for the SCA is not in the trunk. I have seen pics of the glove box fuse assembly, and it has 3 relays on the top. There is also a power distribution board behind this fuse box, which also holds another 4 relays. I'll be pulling apart the dash today to get to these 7 relays.
Why they didn't install a cable operated handle in the hatch is anyone's guess, but it's got to be one of the dumber automotive design choices.
