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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F30 Sedan / F32 Coupe / F36 Gran Coupe Forum > Key fob Battery
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      04-20-2014, 02:57 PM   #1

Drives: 2013 328i
Join Date: Oct 2013
Location: SF Bay Area

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Key fob Battery

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Car: 2013 328i Luxury Line with Premium Package that includes Comfort Access. (all that info may be redundant but included nonetheless)

Issue: Key fob battery "appears" to be weak. I frequently have to be right next to the car to get it to work. (car built May 15, 2013)

Question: If the battery actually does need replacing, is it straight-forward swap or does it need to be re-programmed to "match" the car?

I "think" it's straight-forward swap but you guys are SO on top of these things I thought I'd ask you.

Thanks in advance!
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      04-20-2014, 03:40 PM   #2
Second Lieutenant

Drives: 2014 335i
Join Date: Aug 2012
Location: Portland, OR

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Simply swap in a new CR2450. Takes but a minute.

I had a different issue-- my proximity lock on the driver side would only work intermittently when the key was in my pocket with my leg PRESSED AGAINST the car. A replacement door handle solved the issue but only after the dealer replaced the fob battery to "fix" it, despite me telling them I had already done so.
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