Changed the battery in the key but still wont open anything. Any help would be greatly appreciated
Mercedes-Benz Q&AAsk Your Question
2001 Mercedes-Benz S430 Question: Why will my key not work? I've changed the battery,but it wont open the doors.
Answer #1Greg's Orange Auto (14915 Answers) , Orange, CA - (714) 361-9386globalhelper August 28, 2013, 09:08Master
TRY ANOTHER KEY IF AVAILIBLE TO START WITH.COULD BE IGNITION SWITCH ASSM HAS GONE BAD
Replyduke.ell456, August 28, 2013, 11:36Rookie
Thanks. I will get that checked.
Answer #2Prestige Auto Works (199 Answers) , Sacramento, CA - (916) 550-9579Prestige Auto Works August 28, 2013, 12:55Journeyman
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.