2014 C7 door buttons not working
Thread Starter
Cruising
Joined: Jul 2017
Posts: 14
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2014 C7 door buttons not working
Went to get in my car last night and couldn't get in. Neither the driver nor passenger door touch pad worked. Using the key fob I could hear it lock and unlock (atleast hear the fuel door locking/unlocking), could open the trunk, and start the car. After popping the driver door open with the trunk door latch I noticed that neither the driver or passenger interior buttons worked. Also, when trying to start the car it would not recognize the fob unless it was in the steering column.
I put a new CR2032 battery in the fob and got the same results. I put the car battery on charge over night and it is showing full charge. As far as I can tell every other electronic system is working fine.
I can't find a specific fuse for the door buttons and that is where I think my problem may be. I pulled all of the fuses in the trunk and a handful in the engine compartment that I thought might be connected but didn't see any that were blown. I've spent the better part of a day searching the internet for C7 door fuses and can't find anything.
Looking forward to everyone's suggestions!
I put a new CR2032 battery in the fob and got the same results. I put the car battery on charge over night and it is showing full charge. As far as I can tell every other electronic system is working fine.
I can't find a specific fuse for the door buttons and that is where I think my problem may be. I pulled all of the fuses in the trunk and a handful in the engine compartment that I thought might be connected but didn't see any that were blown. I've spent the better part of a day searching the internet for C7 door fuses and can't find anything.
Looking forward to everyone's suggestions!
Le Mans Master
Joined: May 2000
Posts: 8,729
Likes: 1,508
From: Redmond WA
Likely a trip to the dealer, unfortunately.
About the only suggestion I can make off the top of my head would be to check to make sure neither of the interior door release buttons (or exterior, if its even possible) are "stuck" in the depressed state. That might interfere with any other button being pressed. Long shot.
About the only suggestion I can make off the top of my head would be to check to make sure neither of the interior door release buttons (or exterior, if its even possible) are "stuck" in the depressed state. That might interfere with any other button being pressed. Long shot.
Thread Starter
Cruising
Joined: Jul 2017
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Likely a trip to the dealer, unfortunately.
About the only suggestion I can make off the top of my head would be to check to make sure neither of the interior door release buttons (or exterior, if its even possible) are "stuck" in the depressed state. That might interfere with any other button being pressed. Long shot.
About the only suggestion I can make off the top of my head would be to check to make sure neither of the interior door release buttons (or exterior, if its even possible) are "stuck" in the depressed state. That might interfere with any other button being pressed. Long shot.
Burning Brakes
Joined: Jun 2013
Posts: 1,000
Likes: 282
From: Texas
Before taking to dealer, try disconnecting battery for about 10 minutes...then reconnect and try. I think this reboots entire electronics and might reset computer controlling doors.
Thread Starter
Cruising
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Here is another odd thing. All of the fob buttons work as they should except, when I go to start the car. It says remote not found and will only start with the fob in the steering column. Is there a fuse for something that controls starting the car and sensing the fob that I need to be checking? If so, what system is that? I have adjusted the steering column in all sorts of directions to see if their is an obvious loose connection but that didn't seem to help.
This is so weird that the C7 doesn't have an obvious fuse to the door switches when the C6 does.
Thread Starter
Cruising
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Burning Brakes
Joined: Jun 2013
Posts: 1,000
Likes: 282
From: Texas
Just checked the manual at lunch. The BCM is under the passenger side foot panel. could not find any mention of a fuse for doors/FOB specific..all controlled by BCM.
Last edited by agapsdiver; Jul 10, 2017 at 01:36 PM.
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Thread Starter
Cruising
Joined: Jul 2017
Posts: 14
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Did your manual by any chance give a part number? 3 year warranty ran out last October and I really don't want to take to the dealership for replacing when this is a relative simple item task to be done.
Drifting
Joined: Jul 2012
Posts: 1,325
Likes: 239
From: Missi'ppi... no mo' MO for me!!
I can't account for the door switches not working, but I had the same symptoms after a speed shop installed a roll bar in my c7.
The fob sensor is OEM-double taped to the transom or whatever it's called (the vertical wall behind the seats). It's supposed to be right under the carpet, high, between the seats about an inch or at most, two inches below the lip of the transom.
When the shop installed the roll bar, they moved the sensor and laid it flat on the the floor of the trunk right behind the vertical lip of the transom. It probably wasn't moved 7", but it was enough to require me to key open the trunk, etc., each time to access the car.
Fortunately, I knew where the key fob sensor was supposed to be attached OEM, because I'd stripped out the carpet in order to install soundproof padding. I just replaced the double tape and installed the fob sensor in its' intended OEM position. It's easy to find--the carpet underlayment "insulation" has a pocket where the sensor is supposed to be attached.
I hope that helps. Whatever your problem is, I doubt it's the BCM; it's probably the fob sensor--unfortunately, from what I could see, it's hard-wired in--there's no visible coupling that will allow you to remove it without cutting wires.
The fob sensor is OEM-double taped to the transom or whatever it's called (the vertical wall behind the seats). It's supposed to be right under the carpet, high, between the seats about an inch or at most, two inches below the lip of the transom.
When the shop installed the roll bar, they moved the sensor and laid it flat on the the floor of the trunk right behind the vertical lip of the transom. It probably wasn't moved 7", but it was enough to require me to key open the trunk, etc., each time to access the car.
Fortunately, I knew where the key fob sensor was supposed to be attached OEM, because I'd stripped out the carpet in order to install soundproof padding. I just replaced the double tape and installed the fob sensor in its' intended OEM position. It's easy to find--the carpet underlayment "insulation" has a pocket where the sensor is supposed to be attached.
I hope that helps. Whatever your problem is, I doubt it's the BCM; it's probably the fob sensor--unfortunately, from what I could see, it's hard-wired in--there's no visible coupling that will allow you to remove it without cutting wires.
Burning Brakes
Joined: Jun 2013
Posts: 1,000
Likes: 282
From: Texas
like he said, there are sensors and other electronic hardware involved, not only the BCM.
It does not give a number for the BCM... just go to your local parts dept. and ask them to show you where the BCM is in the parts diagram and ask them for the number.
Find out any return policy for the BCM If that doesn't fix it...most electrical parts have unfavorable return policies.
Thread Starter
Cruising
Joined: Jul 2017
Posts: 14
Likes: 0
I can't account for the door switches not working, but I had the same symptoms after a speed shop installed a roll bar in my c7.
The fob sensor is OEM-double taped to the transom or whatever it's called (the vertical wall behind the seats). It's supposed to be right under the carpet, high, between the seats about an inch or at most, two inches below the lip of the transom.
When the shop installed the roll bar, they moved the sensor and laid it flat on the the floor of the trunk right behind the vertical lip of the transom. It probably wasn't moved 7", but it was enough to require me to key open the trunk, etc., each time to access the car.
Fortunately, I knew where the key fob sensor was supposed to be attached OEM, because I'd stripped out the carpet in order to install soundproof padding. I just replaced the double tape and installed the fob sensor in its' intended OEM position. It's easy to find--the carpet underlayment "insulation" has a pocket where the sensor is supposed to be attached.
I hope that helps. Whatever your problem is, I doubt it's the BCM; it's probably the fob sensor--unfortunately, from what I could see, it's hard-wired in--there's no visible coupling that will allow you to remove it without cutting wires.
The fob sensor is OEM-double taped to the transom or whatever it's called (the vertical wall behind the seats). It's supposed to be right under the carpet, high, between the seats about an inch or at most, two inches below the lip of the transom.
When the shop installed the roll bar, they moved the sensor and laid it flat on the the floor of the trunk right behind the vertical lip of the transom. It probably wasn't moved 7", but it was enough to require me to key open the trunk, etc., each time to access the car.
Fortunately, I knew where the key fob sensor was supposed to be attached OEM, because I'd stripped out the carpet in order to install soundproof padding. I just replaced the double tape and installed the fob sensor in its' intended OEM position. It's easy to find--the carpet underlayment "insulation" has a pocket where the sensor is supposed to be attached.
I hope that helps. Whatever your problem is, I doubt it's the BCM; it's probably the fob sensor--unfortunately, from what I could see, it's hard-wired in--there's no visible coupling that will allow you to remove it without cutting wires.
Here's is an even stranger symptom. When I close the doors with the fob in the car it does sense that the fob is in the car - i get the 3 horn beeps warning me that it is in the car.
Le Mans Master
Joined: May 1999
Posts: 6,517
Likes: 1,304
From: Windermere FL
I believe that the BCM must be programmed to match the VIN so it knows what features are present. You need a GM programmer to do this. I think there are some suppliers that will do this for you. Best check with them before trying to swap the BCM.
Thread Starter
Cruising
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Le Mans Master
Joined: Sep 2003
Posts: 8,847
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From: Longview Texas
If you are getting fob not found error, I would try another new battery in the fob. I replaced mine with a "new" in the package battery, and the fob still would not work. I bought a store fresh battery, and problem went away. Even a battery that still tests good may not be strong enough.
Thread Starter
Cruising
Joined: Jul 2017
Posts: 14
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If you are getting fob not found error, I would try another new battery in the fob. I replaced mine with a "new" in the package battery, and the fob still would not work. I bought a store fresh battery, and problem went away. Even a battery that still tests good may not be strong enough.
Also, doesn't matter which fob I use, I get the same results.