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Any issue coding a used smart key for a 16-18 MKX?

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Either by a dealer of by yourself? My Lexus and BMW keys had to be new according to the dealers, however I have seen a locksmith encode the Lexus key so there is that. I have never heard of any similar issue with the MKX except you need two smart keys in your possession to encode a 3rd.

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I must be doing something wrong because I cant get the keys to code on my own. 

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Are the keys your attempting to program OEM? I read that others have had problems with Chinese clones.

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I never had problem with chinese clones, a locksmith can program it easily without any issue.

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On 11/30/2021 at 9:19 AM, Don G said:

I must be doing something wrong because I cant get the keys to code on my own. 

It's not that easy to code the keys on your own, you need the software to do it and it's not readily available. So, it's always important to contact a locksmith or dealership for new smart card key.

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On 2/17/2023 at 1:20 PM, JohnLingard said:

It's not that easy to code the keys on your own, you need the software to do it and it's not readily available. So, it's always important to contact a locksmith or dealership for new smart card key.

You only need a locksmith and software if you only have one key. If you have both registered keys available, the process described in the video will program a third key.

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