Engine

check transmission fluid level

This is why I warn people about those "cheap" used BMW's.

If it's a push start ignition that's the problem there is an open recall on them on 750li but when you call customer service they bullshit you and ask what's your Vin and then say sorry you can bring it in to a dealer ship I have problems with valve seals with only 70000 miles they told me 9000 to fix to fix there should be a recall all BMWs have this issue

Gear Box ;)