Spare key - No key detected
Hello all. I’ve searched for the “no key detected” error but none of the answers match my particular situation. I bought a 2013 Focus used and it came with two keys, one with a built in fob with buttons and one that is just a regular key. The key with buttons works fine, always has. But recently I lost it and tried to use the spare, but the spare would not work and the car only said “no key detected”. Eventually I found my main key but I would like to know why the spare doesn’t work…? If this car requires some kind of electronic key then why did it come with a non-electronic one…? Pls help 🙏