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Old 03-27-2013, 05:57 PM   #1
Beensent
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Programming key fob

hello I have a 2000 328i and my only key died on me and only works in the doors and ignition.... my bro in law found me a smart key and I use it as a key chain. I was wondering if it's possible to program the new key to work the doors and trunk only?

left key is my current key and the right is my key chain
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Old 03-27-2013, 06:01 PM   #2
Teddy7
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I know this doesn't pertain to your exact question, but you could always replace the battery in your key for a few dollars. The battery is really cheap (a few dollars) and the DIY isn't that hard. I did it to mine and the key unlocks from so much further than before.
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Old 03-27-2013, 06:05 PM   #3
Beensent
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Yeah I want to try to replace the battery but I saw in a few threads that after u install a new battery u have to reprogram the key... And with this new keychain it would be nice to have a extra key fob for the doors... I only have one key right now...
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Old 03-27-2013, 06:08 PM   #4
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The reprogramming for the original key is easy. I forgot the exact procedure but I'll look it up again. Give me a minute.
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Old 03-27-2013, 06:10 PM   #5
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Taken from bimmerforums: Here is how to reprogram your diamond shaped key.

1) Insert key into the ignition and turn it to the first position, where the drivers info center turns on and a few dummy lights, turn it back off within 5 seconds.
2) PULL THE KEY OUT OF THE IGNITION. (this step is mentioned no-where except the E46 re-programming instructions)
3) Press and hold the unlock button, then push the BMW roundel (lock button) 3 times, pausing for about 2 seconds in between each press. Release the unlock button. The doorlocks should now cycle between lock and unlock. Now your key is programmed to your car.
4) (may not be necessary but I did it and caused no problems) Re-insert the key into the ignition, turn forward to position 1 and back off within 5 seconds to End programming.

Do all of this within 30 seconds.

In order to re-program multiple keys, simply grab your 2nd key after step 3, and do the same thing. It should make the locks cycle again between lock and unlock. I do believe that you have to re-insert key #1 into the ignition and turn it to position 1 then back off again to end programming, I don't believe you do it with your 2nd key.
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Old 03-27-2013, 06:20 PM   #6
Beensent
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Cool thanks imma buy a new battery and work on it and reprogram if it don't work
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Old 03-27-2013, 06:22 PM   #7
Teddy7
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Quote:
Originally Posted by Beensent View Post
Cool thanks imma buy a new battery and work on it and reprogram if it don't work
Sounds good, maybe even try the steps above on your dead key to see if it'll work again. You never know, it might work.
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Old 03-27-2013, 08:06 PM   #8
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Originally Posted by Beensent View Post
Cool thanks imma buy a new battery and work on it and reprogram if it don't work
WARNING, if you are not CAREFUL cutting the only key you have open, you can cut off components and/or damage the EWS circuitry and then your ONLY key will not even start the car!!!

Go to www.bmwgm5.com and see if you can find the Wall of Shame, you will see!

If you have a decent dealer parts department, you can get a new keyfob key for $160. Usually if you order early am on any day buy Fri or Sat, they will usually have the key the next day by 12 pm.
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Old 03-27-2013, 09:28 PM   #9
Teddy7
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Quote:
Originally Posted by jfoj
WARNING, if you are not CAREFUL cutting the only key you have open, you can cut off components and/or damage the EWS circuitry and then your ONLY key will not even start the car!!!

Go to www.bmwgm5.com and see if you can find the Wall of Shame, you will see!

If you have a decent dealer parts department, you can get a new keyfob key for $160. Usually if you order early am on any day buy Fri or Sat, they will usually have the key the next day by 12 pm.
I respect your opinion greatly, since you contribute a lot to this forum, but it honestly is such an easy DIY and you would really have to man-handle the electronics to damage the key. Plus $160, without trying, or $3 and potential to have the problem solved? Just use a really sharp razor (this takes soooo long) or use a really sharp, thin, serrated kitchen knife like I did (It cuts through in a fraction of the time) and you can just use the razor when you get closer to the end of the plastic holding the key together. FYI the knife that I used was from my family's restaurant, so it was thinner and sharper than your average kitchen knife.
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Old 03-27-2013, 09:33 PM   #10
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Originally Posted by Beensent View Post
.... my bro in law found me a smart key and I use it as a key chain. I was wondering if it's possible to program the new key to work the doors and trunk only?
You can not use the smart key your bro-in-law found with the E46 3-series. It won't work.
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Old 03-27-2013, 10:28 PM   #11
jfoj
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Originally Posted by Teddy7 View Post
I respect your opinion greatly, since you contribute a lot to this forum, but it honestly is such an easy DIY and you would really have to man-handle the electronics to damage the key. Plus $160, without trying, or $3 and potential to have the problem solved? Just use a really sharp razor (this takes soooo long) or use a really sharp, thin, serrated kitchen knife like I did (It cuts through in a fraction of the time) and you can just use the razor when you get closer to the end of the plastic holding the key together. FYI the knife that I used was from my family's restaurant, so it was thinner and sharper than your average kitchen knife.
You would be surprised as to what people can do to a key. Just check out Scotts Wall Of Shame and all the damaged keys he had run across and this is only a fraction of the problem keys that have been damaged.

Yes people should try this, but I saw the OP was on post #4, so I have no idea how much research he had done or how many other forums he has been on and read about the key and EWS circuitry, so I just wanted to warn him to be CAREFUL.

Yes, if someone is careful they will not have issues, but not many are as careful as they should be, then they have no keyfob and no key to start their car. If the person can get into the car by other means, a working EWS is far more important than a working keyfob to most if they only have a single key.
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Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

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Old 03-27-2013, 10:37 PM   #12
Teddy7
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Quote:
Originally Posted by jfoj
You would be surprised as to what people can do to a key. Just check out Scotts Wall Of Shame and all the damaged keys he had run across and this is only a fraction of the problem keys that have been damaged.

Yes people should try this, but I saw the OP was on post #4, so I have no idea how much research he had done or how many other forums he has been on and read about the key and EWS circuitry, so I just wanted to warn him to be CAREFUL.

Yes, if someone is careful they will not have issues, but not many are as careful as they should be, then they have no keyfob and no key to start their car. If the person can get into the car by other means, a working EWS is far more important than a working keyfob to most if they only have a single key.
Agreed, nothing more to add.
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