Does anyone else here have an n63 v8 car that maybe one time per month gives you a drivetrain malfunction message like 10 seconds after starting your engine but ONLY right after startup. then i just stop the engine and start again and it goes away. It never says that when I'm driving, doing high speed pulls, doing city driving? It is only right after startup like once every 2 weeks. The engine idles so smoothly i can barely even feel any vibration at all. It drives very smoothly and silently and makes no sounds that are out of the ordinary. There is NO check engine light on. What could this be? I've been hesitating to take it to a dealership because I've heard from other people they just rob you by saying "ohhh we aren't exactly sure what it is but let's just change all the injectors, spark plugs, coils, and some sensors for 6000 dollars and see if it goes away" and most of the time it does not go away. This engine has been very well maintained its entire life, I've been doing oil changes and coolant changes every 3000 miles and pretty much always keep the rpm below 3000 at all times unless im doing high speed pulls. Scotty kilmer on youtube says if you get error messages but don't hear or feel anything abnormal you can just keep driving it usually.