Asked by Sep 29, 2016 at 09:09 AM about the 2011 Ford Edge

Question type: General

One key works to start car but other key
says system failure why is this

4 Answers


First check of one key opens the door and not the other. this is happens when cars are recovered after theft and new ignition key and switch are reprogrammed. If bother keys work, then a possible bad chip in your key (locksmith could fix this). Please click on "Mark helpful" if you're happy with the respond. Good luck :-)

1 people found this helpful.

Bad chip on the key. Key will open doors even with bad chip, doors don't have a chip sensor like the ignition

1 people found this helpful.

That's correct, doors don't have RFID sensors but the objective is to compare the key teeth cut. This will help indicate if its original or made after market.

1 people found this helpful.

Apparently Chip was fried, cost 250 for new key!!

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