C6 Key Fob Programming
Thread Starter
Racer
Joined: Mar 2013
Posts: 312
Likes: 11
From: San Francisco Bay Area
C6 Key Fob Programming
I looked at numerous threads relating to programming another key fob and following the directions from opening the trunk, placing the current fob and the new fob on the console, opening trunk, turning key in the trunk 5 times quickly. I saw the DIC read ready for fob 4 and inserted in the correct direction with the button facing the passenger side into the glovebox slot. The DIC then read maximum learned so I assumed it accepted the fob and it was programmed. When I took the key fob out it did not work. I even put a new battery before I started the programming since it was in storage for a long time. It was a brand new fob in the sealed GM plastic bag so it could not be defective. Since I am maxed out with the fourth fob learned does it mean I have to do the long programming and erase all and start new? What could be wrong with the new fob?
Safety Car
Joined: Aug 2017
Posts: 4,929
Likes: 2,340
From: Etobicoke (Toronto) Ontario
Battery in upside down? If so, you know what to do. If it’s in the right way up, put it in the slot and with no other fob nearby, see if the car will start. If it does, the fob is programmed and ok.
New battery does not equal good battery. A fully charged 3V battery should read 3.3V
Depending on how long the fob sat in the bag with the original battery, the battery contacts might be corroded a bit, so carefully clean them.
New battery does not equal good battery. A fully charged 3V battery should read 3.3V
Depending on how long the fob sat in the bag with the original battery, the battery contacts might be corroded a bit, so carefully clean them.
Last edited by FatsWaller; Apr 22, 2024 at 08:53 AM.
Drifting
Joined: Apr 2004
Posts: 1,342
Likes: 464
From: Raleigh/Cary NC
Just because it's new doesn't mean that it can't be defective. But more likely something else is going on. Me personally, I could never get the programming to work and ended up going to the dealer to have them do it (they had no problem).
I'd suggest that you do the long programming and start over. However, before you do, make sure that the car is in a place so that it can easily be retrieved and towed to the dealer should the worst happen. Or perhaps, do the long programming in the dealer's parking lot to save the cost of a tow.
I'd suggest that you do the long programming and start over. However, before you do, make sure that the car is in a place so that it can easily be retrieved and towed to the dealer should the worst happen. Or perhaps, do the long programming in the dealer's parking lot to save the cost of a tow.
Thread Starter
Racer
Joined: Mar 2013
Posts: 312
Likes: 11
From: San Francisco Bay Area
Thanks to the guys that responded. Apparently, it did program since it was working this morning. I may have missed the final step of pressing the off ignition switch or hitting the unlock button on the fob. About the comment that the battery may be inverted, it wasn’t but I also read a post by a forum member that said it did not matter when programming, just as when you insert a dead battery fob to start it in the glovebox slot. I can’t understand that but you still need a fresh battery inserted correctly to use the fob.
Safety Car
Joined: Aug 2017
Posts: 4,929
Likes: 2,340
From: Etobicoke (Toronto) Ontario
Thanks to the guys that responded. Apparently, it did program since it was working this morning. I may have missed the final step of pressing the off ignition switch or hitting the unlock button on the fob. About the comment that the battery may be inverted, it wasn’t but I also read a post by a forum member that said it did not matter when programming, just as when you insert a dead battery fob to start it in the glovebox slot. I can’t understand that but you still need a fresh battery inserted correctly to use the fob.
Thread Starter
Racer
Joined: Mar 2013
Posts: 312
Likes: 11
From: San Francisco Bay Area
The slot's antenna induces a current into the fob electromagnetically. This is sufficient to power the fob if the battery is dead or missing. Similar to the way higher-end electric toothbrushes keep their battery charged when they site in their cradle. No electrical contact is required. After all, there needs to be a way to get the car started if the battery in the fob has died. Otherwise, you are stranded.
Race Director
Joined: Dec 2013
Posts: 12,502
Likes: 3,631
I looked at numerous threads relating to programming another key fob and following the directions from opening the trunk, placing the current fob and the new fob on the console, opening trunk, turning key in the trunk 5 times quickly. I saw the DIC read ready for fob 4 and inserted in the correct direction with the button facing the passenger side into the glovebox slot. The DIC then read maximum learned so I assumed it accepted the fob and it was programmed.
My guess, did not do that, but instead just pull the fob pressed the starter button, which kicked the RCDLR out of relearn mode, and which it did not learn the final fob in slot 4.
Last edited by Dano523; Apr 24, 2024 at 12:50 AM.
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