Option codes
Every new Mercedes-Benz came with a Data card when it was delivered to its first owner. This is a small card that lists important information such as the options fitted, serial numbers, delivery dates, key codes to cut new keys etc. Usually a copy can be found in your service manual (log book) or owners manual.
If you do not have your datacard, you may be able to obtain it from through the EPC or alternatively this online database: http://mbfans.info/EN/mercedes/vin/decoder/WDB2200671A419444