Key Fob Trunk Button Not Opening Trunk

Torqu3 · 11-14-2016, 10:45 AM

Sometimes this car does weird things that I just don't understand. This is one of those things. I have comfort access, and that works fine on all the doors, and works about 60% of the time opening the trunk. The other 40% I have to unlock the car before trying to open the trunk. The button on the key fob to open the trunk doesn't open it for some reason. If I hold the button down it sets off the alarm, but just pressing it does nothing. Thoughts?

BB_cuda · 11-14-2016, 11:27 AM

I also have comfort access. Pretty much what you say happens to me as well. I have had luck if I push trunk button multiple times though. Most of the time if it doesn't open by squeezing the rubber button, I also push the unlock button. Either way, it's a button push (trunk button or unlock button) so I don't stress.

Minor thread jack/sorry:
My key fob went for a swim a couple summers ago though. I attribute my intermittent problem to this. The fob eats batteries now in about ~6 weeks. I have cleaned it with isopropyl alcohol 2 or 3 times and let dry. After initial "swim", I put it in a bowl of rice for about a week. It works fine except just hard on the batteries. The swimming pool was a salt water type so I think I've got some parasitic current leakage across some where in there. I don't know how to fully open up the green board for cleaning so I used Qtip up inside the battery rubber seal thing.

I have a back up fob that just recently needed a new battery and is now fresh. I will try it with trunk to see if same trunk button issue is still there.

TorqueAddict · 11-14-2016, 03:09 PM

Quote:

Originally Posted by Torqu3

....If I hold the button down it sets off the alarm, but just pressing it does nothing. Thoughts?

Try holding it for ~3 seconds. I hold it down, count till 3 and let it go and it pops open. Holding it for 4 seconds or longer sets up the alarm.

Yozh · 11-14-2016, 03:52 PM

If you have anything that may interfere with the signal, that will make for an intermittent issue you are experiencing. Cell phone, a wallet in the same pocket. Try opening your trunk with key in a hand, close to the car, usually opens without a fuss.

davethetenor · 11-14-2016, 04:15 PM

Comfort access here too, and I have to hold mine down for a second or so to pop the trunk.

11-14-2016, 10:45 AM	#1
Torqu3 Major 331 Rep 1,157 Posts Drives: 2011 335d Join Date: Sep 2016 Location: Centralish Texas iTrader: (0)	Key Fob Trunk Button Not Opening Trunk Sometimes this car does weird things that I just don't understand. This is one of those things. I have comfort access, and that works fine on all the doors, and works about 60% of the time opening the trunk. The other 40% I have to unlock the car before trying to open the trunk. The button on the key fob to open the trunk doesn't open it for some reason. If I hold the button down it sets off the alarm, but just pressing it does nothing. Thoughts?
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11-14-2016, 11:27 AM	#2
BB_cuda Brigadier General 796 Rep 3,572 Posts Drives: 2011 335D Msport, 2013 X5D Join Date: Nov 2011 Location: Clear Lake, Texas iTrader: (0)	I also have comfort access. Pretty much what you say happens to me as well. I have had luck if I push trunk button multiple times though. Most of the time if it doesn't open by squeezing the rubber button, I also push the unlock button. Either way, it's a button push (trunk button or unlock button) so I don't stress. Minor thread jack/sorry: My key fob went for a swim a couple summers ago though. I attribute my intermittent problem to this. The fob eats batteries now in about ~6 weeks. I have cleaned it with isopropyl alcohol 2 or 3 times and let dry. After initial "swim", I put it in a bowl of rice for about a week. It works fine except just hard on the batteries. The swimming pool was a salt water type so I think I've got some parasitic current leakage across some where in there. I don't know how to fully open up the green board for cleaning so I used Qtip up inside the battery rubber seal thing. I have a back up fob that just recently needed a new battery and is now fresh. I will try it with trunk to see if same trunk button issue is still there.
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11-14-2016, 03:52 PM	#4
Yozh Colonel 881 Rep 2,611 Posts Drives: 2011 335d M-Sport Join Date: Mar 2014 Location: Wet Coast iTrader: (4)	If you have anything that may interfere with the signal, that will make for an intermittent issue you are experiencing. Cell phone, a wallet in the same pocket. Try opening your trunk with key in a hand, close to the car, usually opens without a fuss.
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11-14-2016, 04:15 PM	#5
davethetenor Oil Burner 11 Rep 28 Posts Drives: 2011 BMW 335d Join Date: Jul 2014 Location: Tempe, AZ, USA iTrader: (0)	Comfort access here too, and I have to hold mine down for a second or so to pop the trunk. __________________ 2011 BMW 335d M sport
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