Original NEC PRO57 for Mercedes Benz Support Online Update is the most powerful Benz key programmer in the world that support NEC. No need disassemble, support read EIS data via IR, support add smart keys. Much more functions are included only in NEC PRO57.
Hi, dear friend
Thanks for your inquiry. Following is our user's manual, you can check it, instruction will tell you how to perform the Keyless Go Key Programming:
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