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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > E90 key fob dead. will not lock/unlock doors



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      09-28-2011, 06:46 AM   #23
Eights-n-Aces
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Quote:
Originally Posted by Tat08 View Post
mmm... maybe it could be a solution but if i open the fob i'm pretty sure it won't be nice anymore, there's gonna be little marks all over the fob
Depends on how patient you are and what tools you use. But, like I said, if it isn't working who cares what it looks like. The only other options is paying a couple hundred bucks for a new (nice looking) fob.
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      09-28-2011, 07:58 AM   #24
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Quote:
Originally Posted by Eights-n-Aces View Post
Depends on how patient you are and what tools you use. But, like I said, if it isn't working who cares what it looks like. The only other options is paying a couple hundred bucks for a new (nice looking) fob.
at least it's starts the car..
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      09-28-2011, 07:59 AM   #25
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it seems like i'll have to buy a new one...
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      09-28-2011, 09:25 AM   #26
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Quote:
Originally Posted by Tat08 View Post
it seems like i'll have to buy a new one...
It's probably a good thing to have a second key anyway.
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      09-28-2011, 04:11 PM   #27
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guys I have new oem fobz for sale
pm me
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      12-23-2011, 05:54 PM   #28
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Thanks.
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      12-23-2011, 06:08 PM   #29
John 070
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Quote:
Originally Posted by Tat08 View Post
then the car starts just fine when i put it in the slot, (i don't have confort access so it doesn't have batteries) also the button in the dash works fine
FYI a couple years ago, I experimented. I do have comfort access, and I removed the coin cell. When I put the fob in the dash, the vehicle started.
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      12-24-2011, 11:41 PM   #30
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i have comfort access with 2 keys. i can also enter when i hit the unlock button every time but the vehicle does not recognize when i touch the door or even (slightly) pull the handle every time. It's randomly not working and the dealer cannot get it to fail so they charged me $110 to diagnose nothing and $16.99 for a "BMW battery". It was my 1st visit to the dealer and i told him i was not happy with that price but if it worked, it was worth it. All tested well before I left but not anymore.. They aren't sure which battery they replaced but both are now identical batteries so note that WalMart batteries must be BMW batteries. 2nd visit was last week and they couldn't get the vehicle to not open w/comfort access.
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      11-19-2012, 10:39 AM   #31
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Has anyone ordered the battery from Amazon and performed the install - this
is for the rechargeable battery ONLY?

I've got the key fob separated and can see the rechargeable battery soldered in
however, the battery in the Amazon photo shows its mounting tabs 180 degrees
offset across the center of the battery. In the key fob, the tabs are opposite
one another and not across the battery center point.


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      11-20-2012, 03:28 AM   #32
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There's this one on ebay, also advertized for e90. The tabs are in differrent position than the Amazon battery. I've only found 1 diy video for rechargable batt replacement and it's for an e46. The ebay battery looks closer to the one shown on the video for the e46. Just started getting key-batt message myself, so looking at options.


http://www.ebay.com/itm/Rechargeable...90732180946%26
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