I just bought a 1999 c230 , and the guy said sometimes it starts and other times it don’t, Wehrmacht I stick the key fob in the slot it won’t turn , I hand to do it a few times and then it worked , but now it won’t turn on again, I put new batteries in both key fobs and charge up the car battery, and still no luck , anybody ever have this problem,? Please help!! And one more thing the fob don’t even unlock/lock the doors.