I am planning to inspect a 2012 Mercedes S550 for possible purchase.
How do I interrogate the electronic system of the car to get information about things that currently may not be working, or about problems the car may has had in the past? I have seen the computer dash of these cars and it is really complicated, so I am hoping someone with expertise can recommend the right procedure to investigate the electronics from the dash interface.
Note: I am not asking about using service computers. I am asking about information that can be determined solely by using the standard button interfaces from the driver's seat.