2001 Mercedes-Benz S430 Q&A

2001 Mercedes-Benz S430 Question: Why will my key not work? I've changed the battery,but it wont open the doors.

Changed the battery in the key but still wont open anything. Any help would be greatly appreciated -
Answer 1
TRY ANOTHER KEY IF AVAILIBLE TO START WITH.COULD BE IGNITION SWITCH ASSM HAS GONE BAD -
Comment 1
Thanks. I will get that checked. -
Answer 2
You'll need to sync the key with your system. In short it needs programing. We can do that here with our Mercedes scan tool, same as the Mercedes dealer. -