Remote resynchronization
Thread Starter
Instructor
Joined: Aug 2008
Posts: 204
Likes: 0
From: Lake Placid Florida
Remote resynchronization
Ok folks, you've been wonderful, what'ya think about this...my remote has to be re-sync'd quite often, no battery disc's, then push both lock and unlock and it chirps after 8 sec's, and then the error message shows up to service the vehicle soon. I can reset the codes on the DIC and it'l go away till I have to re-sync the remote again. Do you think it's what's causing the error code to appear or maybe I can fix it permanently by replacing the battery in the remote ? OR...is there something causing a voltage failure in the memory system with the remote which causes no error message other than the service vehicle soon ? I've no idea how long the battery has been in the remote and plan on replacing it anyway, on a '98 coupe.
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
When the fobs get to be 8-9 years old or more, they start failing. Unless you've got a bad solder joint inside, the usual is just the fob dies and must be replaced. Might as well do both at the same time.
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
Something else that will cause a loss of sync is a weak or failing 12 VDC battery, When you crank the engine, the battery voltage will drop down to 9 VDC for a fraction of a second and the BCM will loose sync with the RFA. Then you have to resync again.
Check that.
BC
Check that.
BC
Racer
Joined: Jun 2005
Posts: 333
Likes: 1
From: Mendota Heights MN
Seems like the easiest thing to do is replace the batteries in the fobs. It's easy and inexpensive. If they still fail, replace 'em. If not, you're money ahead. Sorry, but this isn't rocket science -- although I must admit if you're talkin' fobs on the older C5's it can seem like it. 
