Key Replacement Options - BMW M5 Forum and M6 Forums
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post #1 of 26 Old 5th April 2016, 10:12 PM Thread Starter
3mta3
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Key Replacement Options

Spent a long time M5 lurking, finally found one that made sense. Have seen lots of info here about key options as well as some conflicting info on the interwebs. Seller only had 1 key left...and that one appears to be dead or not charging. I did find the reprogram feature and tried it...key on engine off...position 2...pull key out within 5 secs, hold the button etc to program....didn't work! Since I need a spare key anyway should just get a new one from the dealer, or is there another option. They do sell blanks thru locksmiths and interwebs at places but it seems unclear as to how much programming is required and how much or little time would be needed with dealer. Also saw conflicting info on the batteries whether rechargeable or not. Can someone please confirm before I cut this fob open....I also saw a post on this board that the program new key feature works if the fuel filler door actuator is working as it should too. Needless to say I need some advice.

2002 E39 M5 Sterlinggrau Metallic; Full Carmel; MKIV
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post #2 of 26 Old 6th April 2016, 12:51 AM
gregcagle
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My understanding is that you have to go to the dealer. When I got another key I had to do the following:

1) show up with car title
2) Pay anywhere from $160-220 depending on the dealer
3) Wait a day (I read somewhere they have to overnight the key from SC or somewhere)
4) Go back to the dealer so they can do some programming (takes five minutes or so).

Hope this helps.
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post #3 of 26 Old 6th April 2016, 01:19 AM
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post #4 of 26 Old 6th April 2016, 03:32 AM
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Quote:
Originally Posted by gregcagle View Post
My understanding is that you have to go to the dealer. When I got another key I had to do the following:

1) show up with car title
2) Pay anywhere from $160-220 depending on the dealer
3) Wait a day (I read somewhere they have to overnight the key from SC or somewhere)
4) Go back to the dealer so they can do some programming (takes five minutes or so).

Hope this helps.
Confirmed - I did this last year. $175 needed title at the dealer and took only a day. I used reprogramming instructions from this site - don't have the link handy though. Just don't lose your new key a month later like I did .
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post #5 of 26 Old 6th April 2016, 04:21 AM
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Quote:
Originally Posted by 3mta3 View Post
Needless to say I need some advice.
Dealer can provide the master key with remote access, a valet key which only works the ignition and a plastic emergency key which is a master. A full set of keys are 4; 2 masters, 1 valet and one wallet emergency key.

When you order your new key(s), have the dealer deactivate any keys no longer in your possession.

Regards,
Jerry

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post #6 of 26 Old 6th April 2016, 05:00 AM
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As an alternative, you can buy uncut keys from eBay or elsewhere ($30/pair), have them cut at a local locksmith ($30), and use a device called an AK90+ ($60) to add the new key transponders to the existing EWS. It is absolutely more work and a bigger PITA than buying a new key from the dealer and it really doesn't make sense if you just need one key for one car, but it is an alternative to buying from a dealer.

If you need multiple keys for multiple cars, or you own several EWS I/II/III/IV cars, then an investment in an AK90+ can be worth it. I needed 2 keys for my E46 and may eventually need replacement keys for my E39 and my dad's E85 Z4, so the AK90+ investment seemed worth it.

I will say the keyless entry range on the ebay keys is WAAY better than any OE BMW key I've ever had. Aside from that, they look, feel, and function just like OE keys.

Good Luck!

- Darrell

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post #7 of 26 Old 7th April 2016, 07:02 PM
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Is it realistic to expect a locksmith to be able to cut the square blade keys? I know of a local autoparts store that claims to be able to reproduce immobilizer keys. All this time, I just assumed that they wouldn't be able to properly cut the blade keys...
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post #8 of 26 Old 7th April 2016, 07:41 PM
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Similar position here.
Current key is dying and spare given my PO isn't reinitializing via the steps given.

I took it apart and saw that it wasn't soldered properly. , cleaned it up, resoldered it , gonna wait a few minutes and retry to initialization process. if it fails ill get a new battery and go that route

Questions

"Procedure:
1. Close all doors and have all keys available.
2. Using key number 1, turn the ignition switch to KL R, then switch off within 5 seconds and remove the first key.
3. Within 30 seconds of turning the ignition switch to “off” Press and hold the arrow button.
4. While holding the arrow button, press and release (“tap”) the roundel button three times within 10 seconds.
5. Release both buttons. The GM will immediately lock and unlock the doors signalling a successful initialisation.
6. If additional keys need to be initialised repeat steps 3 - 5 within 30 seconds.
7. Switching the ignition to KL R completes the initialisation."

KL R is position 2 correct? right before turning the engine on

Last edited by masri87; 7th April 2016 at 09:33 PM.
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post #9 of 26 Old 7th April 2016, 09:18 PM
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Quote:
Originally Posted by Rontgen View Post

I will say the keyless entry range on the ebay keys is WAAY better than any OE BMW key I've ever had. Aside from that, they look, feel, and function just like OE keys.

Good Luck!
Is this a typo? The eBay keys have BETTER range? If so, that would make this process a no brainer. However, do you need to find a specialized locksmith to cut the square keys like mentioned above?

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post #10 of 26 Old 9th April 2016, 07:49 AM
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Nope, no typo. The eBay keys on my E46 work from a considerably greater distance than they do with my E39 (and my previous E46). I wouldn't have guessed that would be the case, but it seems to be the case with both of my eBay keys.

Getting the key cut is the hardest part, not because the cut is particularly difficult but rather because some locksmiths would rather sell you a key of their own (which typically means they order it for you from the BMW dealer). I haven't had an E39 key cut, but in theory at least it should be easier than the E46/E53 since the E39 is cut from the outside rather than the "laser" cut down the middle.


- Darrell

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