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Key fob constantly needs re-programmed?
Thread Starter
Instructor
Joined: Jul 2007
Posts: 214
Likes: 0
Key fob constantly needs re-programmed?
I have been having this issue with my 2000 c5. I programmed the Fob to the car and it works great till recently. Everytime I go to use it, it wont work till I hold the lock and unlock button down simultaniusly till the horn chirps. But less than 20 min later, you will have to do the same thing again in order to use the fob.
Any idea what this can be?
Any idea what this can be?
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If anyone ever has a FOB that needs to be SYNCED after starting the engine, that could possibly indicate that the 12 VDC main Battery is weak and may need to either be recharged or even replaced.
BC
BC
Team Owner
Joined: Jul 2006
Posts: 22,188
Likes: 4,178
From: Kannapolis NC
Don't waste your time, buy a fob. If you search here you'll find dozens of threads about the 2000's doing exactly what you describe. Gene Culley advertised them for $59 last time I checked. Buy the 2000 fob and be done with it.
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
Yeah, the fobs appear to have a lifetime. After 8-10 years, they seem to die for unknown reasons. I've contacted GM directly about this and all I can get from them is to contact a dealer. I know the new ones are assembled in Mexico but can't find out which company nor can I get a schematic for them. Not sure what all the C-5 owners are going to do when GM stops having them made.
Safety Car
Joined: Jan 2007
Posts: 4,225
Likes: 0
From: The Great Truth: "There ain't no free lunch"
St. Jude Donor '08-'09-'10-'11
Yeah, the fobs appear to have a lifetime. After 8-10 years, they seem to die for unknown reasons. I've contacted GM directly about this and all I can get from them is to contact a dealer. I know the new ones are assembled in Mexico but can't find out which company nor can I get a schematic for them. Not sure what all the C-5 owners are going to do when GM stops having them made.
Couldn't resist
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Tech Contributor
Joined: Dec 2006
Posts: 10,962
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From: Van Buren Arkansas
Wounded Warrior Escort '11
I know...but I was thinking of the alarm functions. I think it will still work if the door is locked with the button before closing the door, then having x number of seconds to start the car once entering it again.
Worse will be for the C-6 owners if their fobs end up having a lifetime as well, since there essentially is no key. Fob doesn't work, car won't run on those.
Worse will be for the C-6 owners if their fobs end up having a lifetime as well, since there essentially is no key. Fob doesn't work, car won't run on those.
Team Owner
Joined: Jul 2006
Posts: 22,188
Likes: 4,178
From: Kannapolis NC
I know...but I was thinking of the alarm functions. I think it will still work if the door is locked with the button before closing the door, then having x number of seconds to start the car once entering it again.
Worse will be for the C-6 owners if their fobs end up having a lifetime as well, since there essentially is no key. Fob doesn't work, car won't run on those.
Worse will be for the C-6 owners if their fobs end up having a lifetime as well, since there essentially is no key. Fob doesn't work, car won't run on those.