Replied by vivi on Feb 20, 2014
Thanks for visiting CarKeyDeals.com website. as for the two functions, here is the answer:
1). "Read and write NEC KEY via Infrared" is only for making old Mercedes. Benz key, not for making new Mercedes Benz key.
2) "Fast erase NEC CHIP via socket" is only workable to the NEC chip that can renew, and both the old version AK500 and AK500+ Pro can’t support renewing NEC chip via socket,
it needs to remove key, and put the NEC chip into the chip holder.
Any problem, please feel free to contact us.
Best regards and have a nice day.