I'd start out by checking for fault codes. For those who have a fault for ESL or crucial not regarded, attempt a 2nd key. if it continue to doesn't perform, the lock or ignition can be at fault. - Nick at Pelican Areas BillAccording to these figures from RepairPal, an S63 AMG is a minimum of 2 times as high-priced to take care of as being a C350. N