A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

CRAZY CIRCUIT BOARD STUFF!!!!

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Old Oct 8, 2005 | 09:06 PM
  #1  
kalivornian's Avatar
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Default CRAZY CIRCUIT BOARD STUFF!!!!

ok sorry if this is the wrong place to post this so if it is feel free to move it or whatever.

so im curious. my '97 A4 didn't come with the 'cool flip key'. its got a remote lock but doesnt have a key attached. my buddy gave me a 'cool flip key' from like a 2000 A4 and i took it to the dealer to get it set up for my car. However they said they run on different frequency's. However the guys in the tech shop said i could probably take them apart and move the pieces from one key to the other and make it work. well moving the entire green circuit board wont work but what if i were to cut one of the transitor things off and sodder-spell? it to the other. I'm not sure what piece controls the frequence but there are two black squares that are the exact same size and have the same number of silver wires coming out on either side.
this picture is rather blurry but it might help you see what im talking about:
<img src="http://home.comcast.net/~kalivornian/DSC00255.JPG">&lt;/img src&gt;
So do you guys think this would work? Or should i just make do with the old style'd key and sell the flip key on ebay for a $100 or so?
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Old Oct 8, 2005 | 09:15 PM
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halik's Avatar
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Default hahaha unless the ICs have the same markings

you will end up with two non working key fobs. Even if you were able to change the frequencies somehow (changing the crystals i presume), chances are they use a completly different protocol to talk to the locking unit, so it def. won't work
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Old Oct 8, 2005 | 09:19 PM
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well crap
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Old Oct 8, 2005 | 09:30 PM
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the 4d0-837-231-T-01c will work with your car and is compatible with the flip key.
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Old Oct 9, 2005 | 02:00 AM
  #5  
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Default have you tried programming it ? for your car... there is a writeup on how to do it.

probably a better chance of that. then doing all this soldering and ****.
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Old Oct 9, 2005 | 04:47 AM
  #6  
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damn i have the 4D0.837.231E guessing that one wont?
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Old Oct 9, 2005 | 08:54 AM
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the E may supercede to the T.
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Old Oct 9, 2005 | 12:15 PM
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Default Re: well crap

I have pretty much the same problem, and also thought of hacking a non switchblade pcb to fit into the switchblade keyfob. But I dont think it will work as 2 much of the PCB needs to go.

As for doing what ur thinking - let me know if it works -
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