I lost my keys to my E class convertible. Had to get lifted to garage to get a new key. Key arrived and didn’t work - never had any problems with my original keys. Sent for another key which also didn’t work - was blackmailed into putting car on diagnostic machine twice at £186 a pop. No faults found with car. After referring car to Germany removed ignition and changed wiring so the new keys would work - 7 weeks later!!!!! Changed the car to fit their keys. Found original key which would not work now. Paid £1250 for a new key. They kept second key which belongs to my car which is a security risk. Their high and mighty attitude is appalling and their highly trained technicians useless. They just like charging a fortune and drinking coffee constantly