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E90/E91/E92/E93 (2006 - 2013)
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Old 04-23-2013, 09:16 PM
Illinibmw94 Illinibmw94 is offline
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Location: Hawaii
Join Date: Apr 2013
Posts: 1
Mein Auto: 2008 328i convertible
remote doesn't work

I have a 2008 328i convertible and the remote key stopped working. The spare doesn't work either. I read that the battery might run down on short trips and will need to be recharged during a longer trip. I live in Hawaii so there are no really long trips so I ran the car in my driveway for two hours. Immediately after the key worked fine, but the next morning it didn't work again. I tried this one more time running the car for four hours this time. Same result: worked fine immediately after but didn't work in the morning. Since it did work at least once I don't think it's a programming or note an issue. Puzzled.
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Old 04-24-2013, 06:10 AM
twhisten twhisten is offline
Drive it like u stole it!
Location: New Jersey
Join Date: Nov 2010
Posts: 784
Mein Auto: 2013 M3
Do you have comfort access?

1997 328i- retired
2007 328i- retired- lease
2006 330xi- retired
2011 335xi-PCD-12/13/10 - DINAN3-----retired
2013 M3-Laguna Seca-6 speed-EDC

2006 X5- retired
2011 X5- retired- buy back

bmw cca#443379
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Old 04-24-2013, 06:54 AM
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raleedy raleedy is offline
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Location: Oregon
Join Date: Sep 2007
Posts: 2,161
Mein Auto: 2013 F10 528i
You're proabbly going to need the dealer's help on this. If you had Comfort Access, you would have replaceable batteries in the remotes, and that would solve the problem as you describe it. Without comfort access, the remote batteries are rechargeable and not replaceable. They shouldn't fail, but sometimes they do, and in that case replacement remotes (which have to come from BMW) are the best -- and perhaps only -- solution.
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Old 04-24-2013, 07:07 AM
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GarySL GarySL is offline
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Location: Humboldt County, CA
Join Date: Jan 2008
Posts: 5,657
Mein Auto: '08 335xi (E90)
Originally Posted by Illinibmw94 View Post
I have a 2008 328i convertible .. I live in Hawaii so there are no really long trips....
Could be a weakening battery in the car itself. If so, idling in the driveway won't solve that. You need to take it for a extended drive with higher revs. If it's not too late.
'08 335xi (E90), 6MT, Arctic/Black, ZPP, ZSP (18"s), ZCW, CA, PDC, i-Pod
Ordered: March 7, 2008
Built: March 17, 2008
At port: March 19, 2008
Shipped on Graceful Leader: March 21, 2008
Arrived Port Hueneme: April 11, 2008
At dealer's: April 19, 2008
Delivered: April 21, 2008
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Old 04-24-2013, 08:15 AM
ctuna ctuna is online now
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Location: usa
Join Date: Jan 2010
Posts: 2,796
Mein Auto: 325xi wagon
Get a battery tender such as a Ctek 3300

Get a battery tender such as a Ctek 3300 for the battery in the car.
Running the car in idle for extended periods is really not a good idea
plus its not a good way to charge a battery.

A Ctek battery tender will cost you about 50 bucks on the internet for the
basic model , well at least in the the 48 states.
About as much as a Tank of Gas.

If you have comfort access there is a 2 dollar battery in the Key Fob you can change.
The non comfort access key has a rechargeable battery .
There is a place you can send those to have the battery replaced that was posted
here awhile ago . Or there are DIY's on replacing the battery if you are skilled.

Do this search on google

bmw keyfob battery replacement
bmwgm5 I think is the guy that fixes these his site comes up on the search.

Last edited by ctuna; 04-24-2013 at 08:31 AM.
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