2005, e320, CDI, 135k

Won’t crank and start sometimes. Usually cranks and starts on a second try, or a third, so far. Sometimes helps if I turn all the way off then try again. Got a little buzz yesterday for a half second, next time she started.
All the systems turn on. Thinking of spraying electronic cleaner into key hole then maybe lubricant? It’s the lubricant I’m not sure about. Haven’t tried moving the steering wheel yet. Later today though.