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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 03-21-2014, 07:25 AM
croowley croowley is offline
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Broken key. (Pic)

Hi. My key slowly started to fail and ofc i thought it was the battery so i changed it, but it still doesnt work.

I think i may have broken the circuit board when i opened the key. I found 2 spots that seems suspicious.

What do you guys think?

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Old 03-21-2014, 08:35 AM
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eohagan eohagan is offline
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bmwgm5.com may be your friend
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Old 03-21-2014, 04:56 PM
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champaign777 champaign777 is offline
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try this

http://forums.bimmerforums.com/forum...move-key-issue
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Old 03-22-2014, 04:18 AM
croowley croowley is offline
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Thanks! Very helpful.
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Old 03-26-2014, 01:24 PM
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bluebee bluebee is offline
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Very many people have sliced off a surface-mount component, or broken a trace, while attempting to repair a key.

Details are here for how to diagnose and fix the problem:
- What can go wrong with a key and where to send it for repair (1) (2) (3) (4)

See also:
- How to replace the old-style BMW square key battery (1) (2) & how to replace the rubber key pads in the square keys (1) (2) & what the red LED indicates on the old square key (1) & what can go wrong with a key and where to send it for repair (1) (2) (3) (4) & what battery to use in the new style 2000+ BMW E39, E46, E53, E85, etc. diamond key (1) (2) (3) (4) (5) (6) (7) & youtube videos of diamond key repairs (1) (2) (3) & a square key to diamond key retrofit and transponder swap (1) (2) (3) (4) & diamond key to square key retrofit questions (1) & how to recharge your key out of your BMW and how long that key will last in the drawer before it needs that off-the-car recharging (1) & the details on swapping the BMW diamond key transponder (1) & the proper diamond key initializing or programming sequence (1) (2) (3) (4) (5) (6) & what to do if your only key is locked inside your bimmer (1) & a description of the various types of BMW Remote, Illuminated, Spare/Wallet, & Valet/Service keys (1) (2) & a list of diamond key EWS, FZV, & DWA functions (1) (2) & all about the 10-key limit to programming your own keys at home (1) & a description of the ignition key ISN (individual serial number) ten-second rule (1) & what to do if you lost your only diamond key (1) or what to do if your BMW key was stolen (1)
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Please read the suggested threads and add value, either by pictures or by descriptions, so the next person stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need

Last edited by bluebee; 03-26-2014 at 01:30 PM.
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