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F10 / F11 (2011 - Current)
The new chapter in the highly successful story of the BMW 5 Series Sedan (F10) and wagon (F11)

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  #1  
Old 12-15-2011, 08:37 PM
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Stealth.Pilot Stealth.Pilot is offline
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Taking apart the key

Does anyone know how to fully disassemble an F10 or F01 key?

I am researching a mod, and I need to fully disassemble the key, not just open battery cover.
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  #2  
Old 12-15-2011, 10:27 PM
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grizzles grizzles is offline
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What's the mod?
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  #3  
Old 12-15-2011, 11:02 PM
Metallic-Force Metallic-Force is offline
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from what I can tell is that you would probably need to cut it with an exacto knife to be able to get into the hardware. It's hard pressed with some sort of glue, there are no screws. I guess that's smart to keep the weight down.
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  #4  
Old 12-16-2011, 03:55 AM
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Stealth.Pilot Stealth.Pilot is offline
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Quote:
Originally Posted by grizzles View Post
What's the mod?
Trying to build a credit card key. Will move the RFID chip to a Lexus credit card key replacing the Lexus RFID chip.
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  #5  
Old 12-16-2011, 04:01 AM
Metallic-Force Metallic-Force is offline
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Quote:
Originally Posted by Stealth.Pilot View Post
Trying to build a credit card key. Will move the RFID chip to a Lexus credit card key replacing the Lexus RFID chip.
Oooo... I think mazda has those credit card keys as well.

I have a 3D printer, you've given me a plethora of ideas.

That makes total sense. Since you have the convenience package... you literally do not need any of the buttons on the key fob... thus eliminating 99.99% of the size.

Genius sir... genius.
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  #6  
Old 12-16-2011, 09:27 AM
schraderade schraderade is offline
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I can't help you but I like this idea. A lot.
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  #7  
Old 12-16-2011, 02:20 PM
YodaSyrup YodaSyrup is offline
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"Trying to build a credit card key."

Really? You don't like the ginormous key fob BMW gives you?
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  #8  
Old 12-17-2011, 05:01 AM
Rafa Rafa is offline
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How do you open the fob to get access to the battery? This is a sorry question, I know, but I do not want to damage the fob when trying to figure out how to open the thing.
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  #9  
Old 12-17-2011, 07:40 AM
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Stealth.Pilot Stealth.Pilot is offline
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Originally Posted by Rafa View Post
How do you open the fob to get access to the battery? This is a sorry question, I know, but I do not want to damage the fob when trying to figure out how to open the thing.
Take off the back cover like this, and battery is underneath.

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  #10  
Old 12-17-2011, 08:00 AM
Tuyen13 Tuyen13 is offline
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I'm not 100% positive but the key fob covers could have been ultrasonically welded (similar to thermal welding). If that's the case, splitting the covers means you can never put them back again. Good luck on converting to a credit card size key. Keep us posted, please.
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  #11  
Old 12-17-2011, 11:14 AM
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quackbury quackbury is offline
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Quote:
Originally Posted by Metallic-Force View Post
That makes total sense. Since you have the convenience package... you literally do not need any of the buttons on the key fob....
Yes and no. I occasionally use the button that opens the trunk remotely (my 2011 does not have the "wave your foot under the bumper" feature), and the button that allows me to lock the car remotely. (When I have those "oh crap, did I lock the car?" moments.)

Also if you want to lock the car and disable the interior motion sensor (e.g. leaving your dog in the car while you run into 7-11), you can push the lock button a second time. I am not aware of any way to do this with comfort access.

Finally, the "Panic Alarm" button could come in handy, even if it's just to keep the local teenage riff-raff from drooling on the car. Hopefully neither my wife nor I will ever need to use if for its intended purpose.

I do like the idea of the credit card key, but you will lose some functionality if you go that route.
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  #12  
Old 12-18-2011, 07:35 PM
gsmith999 gsmith999 is offline
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I like this idea a lot.... So does the comfort access portion of the key fob not require a battery? I never thought about it, but I guess it makes sense that it wouldn't. Just a passive circuit of some kind. Good luck with this mod, and keep us updated...
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  #13  
Old 12-18-2011, 08:22 PM
Metallic-Force Metallic-Force is offline
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I'm not much knowledgeable about they key tech, but I think they use a rolling key type security, meaning in order to copy it, you'd have to copy the algorithm rather than a simple key code... So if that's true, doesn't it mean it does need power?
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  #14  
Old 12-19-2011, 09:09 AM
jgscott987 jgscott987 is offline
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My guess is that where the car simply 'senses' the key being near by or in the cabin doesn't require a battery- just the RFID chip. The transmitting functions, however (unlocking from a distance, etc) do require the battery.

I thought this sounded like a neat mod, but the fact is that I still like to use the remote functions on the fob, even though i have comfort access. Courtesy lights and remote trunk are too valuable to give up.
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  #15  
Old 12-19-2011, 10:04 AM
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Quote:
Originally Posted by jgscott987 View Post
My guess is that where the car simply 'senses' the key being near by or in the cabin doesn't require a battery- just the RFID chip. The transmitting functions, however (unlocking from a distance, etc) do require the battery.

I thought this sounded like a neat mod, but the fact is that I still like to use the remote functions on the fob, even though i have comfort access. Courtesy lights and remote trunk are too valuable to give up.
Of course you can still open the vehicle and turn on the lights with the iPhone app...
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  #16  
Old 12-19-2011, 04:55 PM
X5SMW4.8 X5SMW4.8 is offline
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Quote:
Originally Posted by jgscott987 View Post
I thought this sounded like a neat mod, but the fact is that I still like to use the remote functions on the fob, even though i have comfort access. Courtesy lights and remote trunk are too valuable to give up.
I have a 2008 X5 and originally you could only close the trunk from the button the hatch, but when it gets coded in a little, it will be able to be operated from the button on the dash and the fob to open and close the trunk.

Do the new 5 series have the ability to close the trunk from the fob/dash button or do you still have to press the button on the trunk?
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