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Re: Key programming on older Mercury
Posted to Snap-on Handheld Users Group on 7/23/2019 1 Reply

Using the scanner, If I recall, you have to put in the original key and time it out, then switch the keys fairly quickly and time out the new key. If that does not work, you have a wrong or bad replacement key. Also, there should be a way to allow the system t... Login to read more.

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