Programing a spare key from a previously programed-coded key.

35

Asked by Mar 03, 2013 at 09:12 PM about the Ford Fiesta

Question type: General

Manual/Fiesta owners say I must have 2 keys to program a 3rd.  1 key insertion followed by another and then the key to be programed.  I only have 1 programed key...Why can't I insert it twice ...How would my ignition know the difference.  I'm confused!

8 Answers

65,975

My '08 Mercury Grand Marquis is like that too. When the car was new it was delivered with 2 keys. Each had a different code that the computer knows. If you use the same key twice the computer will know & not allow additional keys to be programmed. This is done to insure you really are the car's owner. I bought my Grand Marquis used last year with only 1 key. I now have a spare. I had it cut & it would open the car but would not let me start it. I had to have the dealer program my new spare key into the computer so it would start the car. HTH. -Jim

1 of 1 people found this helpful.
Best Answer
35

Great start/help! Where/how did u locate a micro-chipped key & how did u get it cut to proper specs? ( I have no key tag.) My Ford dealer where I bought the car sez they can program a key, but can't "cut" it. (?)

1 of 1 people found this helpful.
65,975

I actually bought my spare key at my local Ford dealer's parts counter. They had the key blank and cut it for me. Cost something like $25.00. The next time I went in for servicing I had the (dealer) service department program the key for me. If your dealer has the blank but can't cut the key for you buy the blank & have a locksmith cut it. I'd recommend going back to the Ford dealership to have the key programmed into your system. Thank you very much for the best answer vote too! Glad I could help. -Jim

2 of 2 people found this helpful.
35

Great! Obviously the $25 blank was micro chipped? I'll assume it was not equipped with a remote/keyhead transmitter? Don't really need that feature. Thanks again!

1 of 1 people found this helpful.
65,975

Yes, micro chipped. I have a separate key fob type remote. You're welcome, glad to help. -Jim

1 of 1 people found this helpful.
35

Once more pls. My key & fob snaplocked together. When separated fob must be within 1 inch of key to turn on ignition. Same with yours? More range? I suppose a fobless backup key is a safeguard, but fob must be ever present & operational. i.e. wife couldn't start key with fobless spare? Inconvenient @ best and if u lose fob u are still up a creek. Does your 2nd. key function with defective remote transmitter or dead fob battery? (+ with remote trunk access I'd need a crowbar if remote failed. Low Techie feeling I've been hung out to dry! Murphy's law...sooner or later the remote will fail & I'll be stuck....hopefully not in a blizzard. Thanks...LLO

1 of 1 people found this helpful.
65,975

Hmmmmmmm, that's a good question. My key & fob are both on my keychain together. I've never had them seperated. I did buy a second key fob from eBay and was able to program it into my car's system before I got the spare key. I'll have to try taking the fob off my keychain & give it a try. I'll let you know. Never even thought of that! -Jim

65,975

I took my key fob off my keychain & had no issues with the car. So my set up must be different. -Jim

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