Datatek
Well-Known Member
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- 44,883
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- Near Poitiers SW France
Not heard of a key #4 but no reason why not. As you say the extra functions are only present on keys #1 & #2.I think up to 4 work but I think only 1 and 2 work with the memory seats. My seats are manual so not an issue. The key number is transmitted as part of the code sent to the BECM.