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Discussion Starter #1
I recently bought a second 2012 hatchback and like the first, this one only came with a single key. This is a bad thing because while you can get aftermarket key fob blanks, you need two of them to program them yourself. With my first Focus, I bit the bullet and had them cut and program a key that I bought off of eBay and it was over a hundred bucks for this service. The dealer I used also screwed up the key cut such that near the tip the cut goes all the way through the key so it looks like the forked tongue of a snake and it is rather sharp at the tip. It is still functional but it's not something that is real nice to have in your pocket.

Going through this a second time I thought I would seek out another alternative. Again I purchased some key fobs off of ebay to the tune of $10 each. This time I went to another dealer to have them cut but not programmed This dealer charged $10 each and the cuts came out perfect. I was also able to watch the neat little computer controlled milling machine do the work. It is so automated that I still can't figure out how the other dealer managed to screw it up the last time.

You only need a single key to program the new keys for the door locking/unlocking features on the fobs so that part was pretty easy. After doing that, the last thing to accomplish is programming the new fobs to work in the ignition. I found a key programming device used by locksmiths that you can find on Amazon or eBay. It is called a CK100 key programmer and it plugs into your OBD2 connector. The device is make/model independent and it works on a whole host of vehicles and model years. The listings usually have a list of vehicles to check against the vehicle(s) you are interested in. This tool was just over $100 so right about the same price the dealer charged me to program a single key the last time. It is pretty easy to use. You just plug it into the OBD2 port and follow the on-screen instructions and it worked flawlessly. So, I am planning on making some flip style key fobs to replace the screwed up ones on my other Focus and then I may just sell the programmer. Until then, if anyone is in the Central PA area and is stuck with a single key fob, let me know and I can help you out.
 

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Interesting. I've read you can also program it through either Focccus or Forscan.
 

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Discussion Starter #3 (Edited)
Interesting. I've read you can also program it through either Focccus or Forscan.
I've used Forscan to program keys for my other daughter's MK1. Unfortunately it can't handle the MK3 generation keys. Not sure about MK2.

For the MK1 keys, that was a nice option to have as the modified scanner that you need to do this is only about $20. Going this route, you can also verify that the new keys are valid for programming prior to doing so. This is important because you have to delete ALL of the keys prior to adding them all back, including any original keys and you have to add back at least two. So, if you only had one good key and the new ones aren't valid you would risk bricking your car in the process. So, if you go this route to program your MK1 keys, make sure to do the key verification. The procedure is quite a bit more involved than using the CK100 so make sure to download the guides on the Forscan forum prior to attempting it.

UPDATE: According to the key programming guide for Forscan, it works for PATS security keys up to a model year of about 2011 although some people in the thread reported being able to program newer F150 keys so YMMV.
 

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Discussion Starter #4
New flip keys

Got a couple of flip keys cut and programmed today. These are very nice keys and a big step up from the stabby OEM keys. Found the blanks for $18 each then had them cut at my dealer for $10 each. Next I programmed the wireless transmitters for the doors/trunk/panic button function and used the key programmer to add them to the car such that they would start it. Everything works perfectly. To get something comparable from the dealer would be $200 if not more.

FocusFlipKey1.jpg

FocusFlipKey2.jpg
 

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Nice!
I did a different one last year and it wouldn't work sometimes. So I quit using it.
Will have to check back at some point to see if they are still working well. Got a link to the ones you have?
 

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Discussion Starter #6 (Edited)
For compatibility, you need to make sure the key transmitter is at the correct frequency, the immobilizer chip is the correct one and lastly that the key blade is the right type based on your OEM key. This is a 315Mhz transmitter, 80-bit chip (4D63) and the laser style blade (HU101). Here is a link Nice touch with these keys is that they came with the Ford emblems making them look stock. They took about 2 weeks to arrive.
 

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For compatibility, you need to make sure the key transmitter is at the correct frequency, the immobilizer chip is the correct one and lastly that the key blade is the right type based on your OEM key. This is a 315Mhz transmitter, 80-bit chip (4K63) and the laser style blade (HU101). Here is a link. Nice touch with these keys is that they came with the Ford emblems making them look stock.
Gotcha. Yeah the one I had worked at first. But then randomly wouldn't open the doors sometimes. Would always start the car though. It was weird.
 

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Gotcha. Yeah the one I had worked at first. But then randomly wouldn't open the doors sometimes. Would always start the car though. It was weird.
So far, so good for me. Only been using it a couple days but the transmitter works at least as good as my OEM key if not better because I may need a new battery in my original key.
 

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So far, so good for me. Only been using it a couple days but the transmitter works at least as good as my OEM key if not better because I may need a new battery in my original key.
Good to know. The one I had was like the VW ones. This one looks better.
 
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