E91 key fob doesn't work when hot

roblese90 · 08-12-2023, 11:19 PM

2012 e91 with comfort access, key fob doesn’t work when the car has been out in the sun for a few hours. I have already replaced the battery in the keys, battery in the car, checked for broken wires, and also replaced the diversity antenna under the spoiler and the issue is still there. When the key doesn’t work, if I go and give the spoiler a little love tap, BOOM it works, until the next time it bakes in the sun. I’m lost at what it could be.

machine4321 · 09-18-2023, 01:03 PM

I had to replace about 15” of all 4 wires running from spoiler to headliner. Mine didnt work at all when I bought it and has been fine since

08-12-2023, 11:19 PM	#1
roblese90 Private First Class 79 Rep 151 Posts Drives: BMW Join Date: Aug 2021 Location: Nowhere iTrader: (0) Garage List 2010 bmw 328i [0.00]	E91 key fob doesn't work when hot 2012 e91 with comfort access, key fob doesn’t work when the car has been out in the sun for a few hours. I have already replaced the battery in the keys, battery in the car, checked for broken wires, and also replaced the diversity antenna under the spoiler and the issue is still there. When the key doesn’t work, if I go and give the spoiler a little love tap, BOOM it works, until the next time it bakes in the sun. I’m lost at what it could be.
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09-18-2023, 01:03 PM	#2
machine4321 Private 25 Rep 67 Posts Drives: 135i Join Date: Oct 2020 Location: Ontario iTrader: (0)	I had to replace about 15” of all 4 wires running from spoiler to headliner. Mine didnt work at all when I bought it and has been fine since
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