Chosen Solution

1985 Mercedes 300-D Turbo sedan

How about telling us what is wrong with it? If it’s not opening I’d check the fuse box. The cover of he box probably has marking to tell you which one it is, I had a 1983 300D but don’t remember if it was manually operated or not or if was a tilting one. Here’s a video on repairing it and this guy is really, really good and even has the parts for sale at very reasonable prices. He has the manuals in PDF format and printed format and video: https://mercedessource.com/node/9484