everything in my car turn on except it wont crank over on 2003 Mercedes-Benz S500 4MATIC

it wont turn on or crank over but everything works

Asked by for the 2003 Mercedes-Benz S500 4MATIC
It could a battery issue. do you here anything when you are trying to start the car? Ignition switches are common as well. The switch is actually a computer and you have to prove ownership to the dealer to purchase the part.