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  #1  
Old 11-28-2012, 06:00 PM
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Remote key2 coded key1 lost prog. key1 reprog key2 lost prog. Any explanation?

Both Remote keys were programed. When coding new preferences through scanner while key2 was in ignition, key1 that was away with my wife was found not operational later. I reprogrammed my wife key1, it became operational again. Second day when trying to remotely open the door with my key2 it is found that it lost programing. Reprogramming it and it is working again. Any explanation? it is weird. Don't even know if my wife key still ok or not
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  #2  
Old 11-28-2012, 06:44 PM
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Try post 5 here.
http://www.xoutpost.com/bmw-sav-foru...lp-please.html
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  #3  
Old 11-28-2012, 07:15 PM
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nothing there related to my case. My case is : when I use method 1 I can program key2 but looks as this is disabling key 1. when I reprogram key 1, key2 is found disabled as if one only key can be working at a time . Either key1 or key2. Before coding preferences.both keys were working as remote keys. It looks like it is something related to the coding process. Mechanic asked me about the second key, but then said, never mind ,both keys will work alike
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Old 11-28-2012, 07:47 PM
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You MUST program BOTH keys during the same session. Any remote key not programmed during the same session, will no longer be able to lock/unlock & arm/disarm the car's alarm. It will still be able to START the car...but the FZV/DWA (keyless entry/anti-theft alarm system) will be disabled for the key not present. This is one deterrent for "remote" access when a key is lost or stolen...if you reprogram your remaining remote key(s)...the lost/stolen key will no longer have "remote" capability...and if you can also "bar" the lost/stolen key from starting the car if you go to your BMW dealer (or have the aftermarket software/hardware like INPA etc.)

The remote keys contain 3 features:
  1. EWS (immobilizing "drive-a-way protection)
  2. FZV (remote/keyless entry)
  3. DWA (anti-theft alarm siren system
If you need to reinitialize your keys...you will only be reprogramming FZV & DWA. EWS can only be programmed using dedicated BMW DIS equipment (or the aftermarket stuff) You MUST follow the reinitializing instructions to the T. Do not fudge, skip, ignore, combine any of the steps below. The 2nd key should NOT be inserted into the ignition...but start it on STEP 3 where you start pushing/holding the buttons:
TIPS:
  • KL R = ignition position 1
  • You can remove the 1st key from the ignition in STEP 3 after you've turned the ignition back OFF
  • Start the 2nd, 3rd, 4th remote key on STEP 3...DO NOT insert them into the ignition...to do so will cause the 1st key to LOSE its programming.


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Last edited by Qsilver7; 11-28-2012 at 07:59 PM.
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Old 11-29-2012, 05:00 AM
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Oh thank you Qsilver7, that was a documented and satisfactory reply and clear any confusion. Still one point regarding step 7. Which key to use to complete initialization, key1 or key2? many thanks
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Old 11-29-2012, 11:12 AM
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Quote:
Originally Posted by goldenbird View Post
...Still one point regarding step 7. Which key to use to complete initialization, key1 or key2? many thanks
Step 7 just stops the initializing process a few seconds sooner...in fact, in spite of what I previously wrote about not skipping any steps...step 7 is kind of the exception to that rule. Thirty seconds after reinitializing your last remote key...if no other key is processed...the programming session automatically ends.

So, it doesn't matter which key you insert for Step 7...due to the same reason that if you insert any of the keys into the ignition (after initial insertion of the first key)...any key inserted prior...will no longer have remote capability.

Hope that explanation makes sense.
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  #7  
Old 11-29-2012, 02:57 PM
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Totally clear.Thank you
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Old 11-29-2012, 10:44 PM
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Qsilver7, that's awesome info!
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