Car Will Not Start problems of the 1999 Mercedes Benz 300

The contact owns a 1999 Mercedes Benz 300. The contact stated that he attempted to start the vehicle but the engine would not start. The contact exited the vehicle and tried to lock the doors but noticed that the key was not working. The contact used the spare key and drove the vehicle to the dealer where they stated that the main key needed to be replaced. The key was replaced. The manufacturer was notified of the failure. The failure mileage was 74,000.