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Key(/fob) coding didn't work!

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Old 08-02-2005 | 01:51 PM
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RX8SpdDmn's Avatar
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From: Florence, KY
Key(/fob) coding didn't work!

I got a switchblade key from a Mazda MPV (which does NOT have a trunk release). I had a key cut for my RX-8. I popped the little pin out of the key shaft that holds it into the rotating part of the switchblade and I pulled out that key. I scribed the shape of that key onto my newly cut key and then cut it out and shaped it with a Dremel. I reinserted my new key and put the pin back in and the fit is perfect.

I followed the directions I found here: https://www.rx8club.com/series-i-do-yourself-forum-73/diy-code-your-own-key-remote-43873/

Neither my new key, nor the key fob worked after either process. Any ideas as to why??
Old 08-02-2005 | 03:08 PM
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From: Bay Area, CA
maybe because you;re using a minivan key for your sports car?? lol

What exactly didn't work? YOu have 2 keys and your new one right?
Old 08-02-2005 | 10:41 PM
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Originally Posted by cleoent
maybe because you;re using a minivan key for your sports car?? lol

What exactly didn't work? YOu have 2 keys and your new one right?
I figured that since my car had 4-doors, I was close enough! :p

Well, the key didn't start the car (the security light flashed at me when I tried), and the fob didn't unlock/lock the doors.

I have 2 original keys, plus the valet (although I wasn't using it). Is there a modification to the process that I'm missing?
Old 08-02-2005 | 10:47 PM
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MPV models do not have an anti-theft ignition system & the key does not contain a transponder. The MPV key is not compatible with the Miata or RX8. Sorry the MPV fob won't work on an RX-8.

Gomez.
Old 08-02-2005 | 10:54 PM
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Part numbers as follows......


FE04-67-5RY, Transmitter for the RX-8.


LF22-67-5RY, Transmitter for the MPV (W/Pwr Sliding Doors)


LF20-67-5RY, Transmitter for the MPV (W/O Pwr Sliding Doors)
Old 08-03-2005 | 09:12 AM
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damn it.

thanks for the info.
Old 08-03-2005 | 09:46 AM
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dont ya think you could have looked into that before you bought the parts? lol
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