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X5 E53 (1999 - 2006)
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  #1  
Old 04-11-2017, 09:12 PM
vanbao vanbao is offline
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Location: Bothell WA
 
Join Date: Aug 2014
Posts: 10
Mein Auto: 2004 BMW X5
Two Working Keys but Only One will Work at any instance

I have two original BMW keys for my 2004 X5. What is so strange is I can only program the fob to work on any one of the two at any instance. In other word, if key 1 is programmed, the fob on key 2 will be deprogrammed and the fob functions stop working. If I program (initialize) key 2, then the fob functions on key 1 will stop working.

If I want to use key one again, I will have to reinitialize it. This is very strange. Why can't I have both keys initialized and working at the same time.

Thank you so much for your help,
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  #2  
Old 04-12-2017, 06:50 AM
QSilver7's Avatar
QSilver7 QSilver7 is offline
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Location: Northeast Indiana
 
Join Date: Aug 2008
Posts: 9,043
Mein Auto: 1997 740iL / 2006 X5 4.4
You have to program BOTH (or up to 4) remote keys during the SAME session. As you 've found out...any remote key NOT programmed during the same session will not have the ability to lock/unlock & arm/disarm the vehicle. The reason for this is that every initialization session...gives the keys a new rolling code table. So any remote not programmed during the same session will be IGNORED by the GM.

See the instructions below...you can see that it says that ALL remote keys must be done during the same session. See STEP 6:

TIPS:
  • KL R = ignition position 1
  • make sure ALL doors are CLOSED
  • make sure ALL doors are UNLOCKED
  • only insert the 1st key into the ignition, then remove it on STEP 3 before pressing the buttons
  • start programming the 2nd-4th remote on STEP 3...DO NOT INSERT the key into the ignition...start on STEP 3 where you start pressing the buttons

__________________
Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
(SOLD)
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)

http://imageshack.com/scaled/grid240/822/e38e532ndsigpic.jpg
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  #3  
Old 04-12-2017, 08:35 AM
vanbao vanbao is offline
Registered User
Location: Bothell WA
 
Join Date: Aug 2014
Posts: 10
Mein Auto: 2004 BMW X5
Quote:
Originally Posted by QSilver7 View Post
You have to program BOTH (or up to 4) remote keys during the SAME session. As you 've found out...any remote key NOT programmed during the same session will not have the ability to lock/unlock & arm/disarm the vehicle. The reason for this is that every initialization session...gives the keys a new rolling code table. So any remote not programmed during the same session will be IGNORED by the GM.

See the instructions below...you can see that it says that ALL remote keys must be done during the same session. See STEP 6:

TIPS:
  • KL R = ignition position 1
  • make sure ALL doors are CLOSED
  • make sure ALL doors are UNLOCKED
  • only insert the 1st key into the ignition, then remove it on STEP 3 before pressing the buttons
  • start programming the 2nd-4th remote on STEP 3...DO NOT INSERT the key into the ignition...start on STEP 3 where you start pressing the buttons

Thank you so much for the information. I guess I was not doing it right. I am very grateful for all the help on this board.
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  #4  
Old 04-12-2017, 08:45 AM
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QSilver7 QSilver7 is offline
Officially Welcomed to the 'Fest
Location: Northeast Indiana
 
Join Date: Aug 2008
Posts: 9,043
Mein Auto: 1997 740iL / 2006 X5 4.4
...thank you for giving enough details to "visualize" the process you were doing. If you had simply wrote that you had "followed the instructions"...then that would have left nothing for us to consider/ponder what you had done or did not do.
__________________
Q {BMW CCA Member #191509}
2006 E53 X5 4.4i (Sterling Gray) 12/05 mfg date <<~>> 97 740iL (Arctic Silver) 3/97 mfg date
(SOLD)
99 540iT (Orient Blue) <<~>> 95 525IT (Alpine White)
91 735iL (Schwarz Black) <<~>> 85 325e (Bronzit)

http://imageshack.com/scaled/grid240/822/e38e532ndsigpic.jpg
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