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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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Old 10-04-2013, 08:45 AM
farrin57 farrin57 is offline
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Location: Lithonia
Join Date: Oct 2011
Posts: 10
Mein Auto: 530i
key fob

My key fob stopped working. I open the fob and found that the battery contacts broke off. I can still start the car but can not open or lock the doors with the remote. Is there any way to replace this part or will i need to purchase new keys from BMW. Would like the least expensive way to handle this as possible.
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Old 10-04-2013, 09:34 AM
edjack edjack is offline
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Location: San Jose, CA
Join Date: May 2007
Posts: 8,843
Mein Auto: '97 540i 6 speed
Why not just solder the contacts back on?

Since you have the key opened up, it would be a good idea to replace the battery; they do eventually fail.

Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.

Last edited by edjack; 10-04-2013 at 09:35 AM.
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Old 10-04-2013, 10:27 AM
farrin57 farrin57 is offline
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Location: Lithonia
Join Date: Oct 2011
Posts: 10
Mein Auto: 530i
thanks tried but not working
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Old 10-05-2013, 12:34 AM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
Join Date: Mar 2008
Posts: 20,321
Mein Auto: 02 BMW 525i M54 auto 130K
Typing /key f3 in the VERY best of E39 Links should net you lots of good ideas ...

- 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)

Certainly there will be TONS of pictures from Saint Q and others ...
Each repair should invariably add to our knowledge base by the process of inexorable incrementalism.
Your job, in return, is to read the suggested threads, where the best people will always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
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