What is the reason for interior lights and sunroof not working in Mercedes E320 CDI?

I know that the interior lights could be messed up due to a recent replacement/fixing of the telescoping antenna. Or if this is a (post-1996) W210, this won't make sense to you. The sunroof would most commonly be just switches, clean them some way or another. Unless the sunroof slowly died by getting slower and slower until it stopped working, then it really needs to be greased, seriously using only MB grease.