2006 Mercedes Benz C200 Car could not start

If the starter is bad, it needs replaced. You need to first disconnect the negative battery terminal from the battery. Once you have done that, mark the wires on the starter so you can remember where they belong on the new starter. After that, remove the wires and there are two bolts that hold the starter in place. Remove the bolts and remove the starter. Reverse the sequence to replace the new starter.