Description In order for us to program a key we need your EIS (Electronic Ignition Switch) it’s pictured next the key in the photo above. Send us your EIS and any working keys that you have. If you don’t have any working keys that is ok. Just send the EIS.  We cut the emergency metal key if you provide the original metal key. If you don’t have any metal emergency keys you can send in your driver door lock cylinder. We can cut a key using the bitting from the lock cylinder ($80) If your vehicle is equipped with “Keyless Go” add the Keyless Go option. Keyless GO functionality works for vehicle model years 2009-2014. Purchase the service, then send your EIS,  working key (if you have a working key), along with a print out of your order number. Or just write your order number on the package if you cannot print it out. Mercedes Benz Specialist Key Programming Dept 14125 Flomar Dr Whittier, CA 90605 Once we receive your EIS and key (if you have a key to send) we will program a spare key and cut the emergency metal key (if you provided us with the original) and ship it out the same day we receive your package. If you have any questions, call us at (818) 510-3375