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#1
01-15-2016, 01:15 PM
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Ignition Key Battery Change
Thanks
__________________
Rats think bats are angels. 
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#2
01-15-2016, 01:28 PM
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If its not charging while the car is running I wouldn't risk breaking the key to open it - lot of sensitive electronics in there - get a new master from the dealer if its truly dead IMO
__________________
2018 Ram 2500 6.7L Cummins 68RFE 19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed 2013 X5 35D (CEO's) - Born on 5/17/2013 - 82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards
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#3
01-15-2016, 01:42 PM
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Right? Someone posted the wall of shame recently.
https://www.bmwgm5.com/bmwgm5/kf_repair.htm Proceed with caution. Some things aren't worth skimping coin on.
__________________
2000 E46 323Ci 5spd Sport 2001 E38 740iL Security 2002 E53 X5 3.0i 5Spd Sport 2003 E39 540i/6 MSport #501 Family Photo
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#4
01-15-2016, 02:59 PM
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If you have only one key and the battery is dead, I would suggest you to buy new key from dealer first then try replacing battery for the dead key.
Reason is that I've seen many people trying to replace dead battery ending up with broken key that doesn't start either.
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#5
01-15-2016, 07:52 PM
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I've done several for E39 and E53. It requires soldering skill. Take your time and be cautious.
I have other people sent me the dead key to fix.
__________________
 00 E39 DINAN S1 //M5 (82k miles) 06 E53 DINAN 4.8iS, born 2/18/2006 (126k miles) http://www.xoutpost.com/bmw-sav-foru...s-my-dslr.html 90 Straman Z32 TwinTurbo Convertible, (1 of 44 ever made) 5 speed, 444rwhp/451rwtq 01 360 Novitec Spider F1 (26k miles)
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#6
01-16-2016, 01:13 AM
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Visit www.bmwgm5.com and read the info in Scott's site. The battery is RARELY a problem in the keyfob, usually switches or components coming off the board due to high G forces when dropping the key. DO NOT CUT OPEN YOUR KEY, YOU WILL REGRET IT.
Go find a keyfob tester at your local auto parts store to see if you keyfob actually does not work. See attached picture. If you need a replacement keyfob, you can check with your local dealer, but most are rapist. Read this thread, about $140 for a new keyfob, it will come precut and will start the car, you will just need to program the keyfob, no tools or software needed. what did you pay for your E46 diamond key replacement? - E46Fanatics
__________________
2008 4.8i Black with Tabacco. Black Y-spoke wheels and shadowline trim.
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