Keyless Unlock not working in cold

minnmarker · 12-19-2013, 03:47 PM

When my key fob gets below 15F the keyless opening does not work nor does the unlock button on the fob. I have to pull the physical key out of the fob and use it to unlock the door. The X5 will then start but sometimes fails to recognize the driver number and does not load radio presets, seat position, etc.

I assume the battery voltage in the fob drops as the temperature goes down but I would think BMW has enough business in cold climates to engineer it to work in cold weather. I have been putting the fob in the dash slot to charge it.

The Acura and Infinity I had did not have this problem but they had non-rechargable button batteries in the fobs.

Does anyone else have this problem or have I just got a bad fob?

awd301 · 02-09-2014, 04:13 PM

Yes,I've got this problem today,4celsius temperature,I have no idea ,I am from Sweden and when was -15 had no problem

SteveMD · 02-09-2014, 08:33 PM

Are you getting the 'Increased Battery Discharge' message when you start up the car?

If so, your battery is heavily discharged so Comfort Access is switched off.

12-19-2013, 03:47 PM	#1
minnmarker Enlisted Member 17 Rep 48 Posts Drives: 2012 X5 xDrive35i, 2003 M3 Join Date: Apr 2013 Location: Minnesota iTrader: (0) Garage List 2023 BMW X5 45e [0.00] 2012 BMW X5 [0.00]	Keyless Unlock not working in cold When my key fob gets below 15F the keyless opening does not work nor does the unlock button on the fob. I have to pull the physical key out of the fob and use it to unlock the door. The X5 will then start but sometimes fails to recognize the driver number and does not load radio presets, seat position, etc. I assume the battery voltage in the fob drops as the temperature goes down but I would think BMW has enough business in cold climates to engineer it to work in cold weather. I have been putting the fob in the dash slot to charge it. The Acura and Infinity I had did not have this problem but they had non-rechargable button batteries in the fobs. Does anyone else have this problem or have I just got a bad fob? __________________ Minnmarker - Minneapolis, MN 2012 BMW X5 - Daily driver 2003 BMW M3 - Summer Fun!
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02-09-2014, 04:13 PM	#2
awd301 Registered 0 Rep 4 Posts Drives: bmw x5 3.0D 2007 Join Date: Jun 2013 Location: Stockholm iTrader: (0)	Yes,I've got this problem today,4celsius temperature,I have no idea ,I am from Sweden and when was -15 had no problem
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02-09-2014, 08:33 PM	#3
SteveMD Colonel 193 Rep 2,485 Posts Drives: 2016 F10 535i MSport Join Date: Dec 2005 Location: Raventown! iTrader: (3)	Are you getting the 'Increased Battery Discharge' message when you start up the car? If so, your battery is heavily discharged so Comfort Access is switched off. __________________ 2006 E90 330i (retired) 2009 E90 335i (retired) 2012 E70 X5 50i M Sport (retired) 2016 F10 535i M Sport
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