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Old 08-02-2014, 11:21 PM
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2008 4.8, key fob dead

as the title states, my key fob is completely dead. i have comfort access and have taken the key apart with a razor blade to check the internals and noticed nothing strange. the slot inside the car will detect the fob and I can start it without the key in the slot, but nothing else works.. I was told by an individual that it's a faulty antenna somewhere in the liftgate. anyone experience this?
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Old 08-03-2014, 01:08 AM
ard ard is offline
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does your second key work normally? or both keys have the same issue??
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Old 08-03-2014, 01:43 AM
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Only have one key..
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Old 08-03-2014, 10:57 AM
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Maybe the battery is dead?
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Old 08-03-2014, 11:26 AM
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See if this might help you, and I'd get a second FOB just in case..

https://www.youtube.com/watch?annota...&v=J2mM7woeTWQ
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Old 08-03-2014, 03:25 PM
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Have tried several batteries
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Old 08-03-2014, 04:26 PM
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Quote:
Originally Posted by euge View Post
... I was told by an individual that it's a faulty antenna somewhere in the liftgate ...
CA antenna is not in the lift gate .. it is located under the bumper ... easily accessed. See if it became unplugged, or if the wiring or something got damaged.
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Old 08-03-2014, 04:57 PM
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Each door handle has a built-in antenna too.You need a proper diagnostic equipment to make a proper diagnosis of the problem.
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Old 08-03-2014, 07:05 PM
ard ard is offline
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Please do not keep starting new threads when people dont reply...

http://www.xoutpost.com/bmw-sav-foru...lems-w-ca.html

you need another FOB.

This issue is NOT an easy 'check the fuse or wiggle the antenna' fix.

Why would you own a car and only have one key?!?!?

Quote:
Originally Posted by bawareca View Post
Each door handle has a built-in antenna too.You need a proper diagnostic equipment to make a proper diagnosis of the problem.
100% agree. it is not simple. read this, then take it to a qualified shop:

http://www.bmwmotorsports.org/pdf/e7...t%20Access.pdf
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Old 08-03-2014, 11:23 PM
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Quote:
Originally Posted by ard View Post
Please do not keep starting new threads when people dont reply...

http://www.xoutpost.com/bmw-sav-foru...lems-w-ca.html

you need another FOB.

This issue is NOT an easy 'check the fuse or wiggle the antenna' fix.

Why would you own a car and only have one key?!?!?



100% agree. it is not simple. read this, then take it to a qualified shop:

http://www.bmwmotorsports.org/pdf/e7...t%20Access.pdf
One of my fobs was submerged in water. Are you suggesting that I get rid of my car becuase I only have one key fob for it?
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