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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > Replacing battery in Key Fob



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      07-29-2013, 06:45 PM   #23
Wellardmac
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Awesome! Glad to hear this question has been answered. My key fob has been driving me nuts for a couple of weeks - finally no excuse for not getting the battery replaced. That was easy - thank you!
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      08-06-2013, 01:08 PM   #24
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Wow, great post Glim - mine's been low for several months and i kept putting off researching the fix, nice to know it's such a simple fix.
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      09-23-2013, 07:20 PM   #25
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I replaced the battery in my comfort access key fob a while ago and took some pictures, I also did an easy how to guide for those who are having trouble.

The guide is here - How to Replace the Battery in a BMW Key Fob

I didn't see anyone else post pictures so I hope this helps.
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      11-24-2013, 06:59 PM   #26
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Quote:
Originally Posted by wolv23 View Post
I replaced the battery in my comfort access key fob a while ago and took some pictures, I also did an easy how to guide for those who are having trouble.

The guide is here - How to Replace the Battery in a BMW Key Fob

I didn't see anyone else post pictures so I hope this helps.
Nice. Thanks.
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      12-17-2013, 09:30 AM   #27
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Thx for this thread! Will attempt battery replacement today!
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      12-30-2013, 01:26 PM   #28
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This is only for CA people, those of us with nonCA fobs need to get new fobs
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      02-02-2014, 11:27 PM   #29
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One of my E93 key fob cannot open door remotely, so today I purposely run the car from Markham to Niagara just to charge the fob battery. But it didn't work so check the forum and just replaced the CR2032 battery. Everything work again! Really cannot understand why BMW give us wrong servicing information. Thanks the forum.
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      03-08-2014, 07:49 PM   #30
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There's a listing on ebay to repair the batteries in the non CA fob's.
Search ebay for "BMW Key & Fob New Battery Service"

Here's a link
http://www.ebay.com/itm/291095932899

Saved me a few hundred dollars!!!
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      07-05-2014, 02:57 PM   #31
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you tube video on battery replacement



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      11-04-2014, 02:26 PM   #32
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great pictures and instruction, guys! I'ma bout to do this since my remote has terrible distance.
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      12-11-2014, 01:44 AM   #33
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I have a 2007 335i with the comfort access fobs, and my spare fob stopped working several months ago. Fearing that it may be a problem requiring a typical BMW fix (read: RIDICULOUSLY EXPENSIVE). I left it as a "to do" in the back of my mind. Tonight I needed to use the spare, so I searched and found this post. Imagine my stunned delight when I read that it was a bog standard, CR2032 button-cell battery, the most common button cell there is! I followed Glim's instructions, and found (also to my delight) that the battery cover was easily removed (I used the tip of the metal key that is in the fob). I am an IT consultant, so I had a bunch of 2032s lying around. After replacing it, my remote works perfectly! THANK YOU GLIM! First 0$ dollar repair on my BMW to date!
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      02-17-2015, 02:08 PM   #34
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For those of us without the comfort access key... the supposedly non-user serviceable battery... two quick questions:
1. Does anyone on this forum have a guide for the DIY'ers? Like what kind of battery we'd be looking at (supposedly Panasonic vanadium pentoxide rechargeable button cell per link above?) and what the best steps are to do this?
2. How much does a replacement non comfort access key typically cost from a dealer?
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