Key Fobs Wont Sync
Thread Starter
Racer
Joined: May 2011
Posts: 254
Likes: 1
From: White Bear Lake Minnesota
Key Fobs Wont Sync
My 99 came with 1 key fob and I havent been able to get it to work, I just bought a used key fob off another 99 and the guy said it worked fine last time he used it. That one wont sync to my car either, I put new batteries in both fobs and went through the training and it does nothing. Any ideas why this is happening? Could both fobs be bad? I did notice that if I lightly shake both fobs I can hear a little rattle. Is this normal or is something broke in them? Thanks
Le Mans Master
Joined: Sep 2014
Posts: 5,278
Likes: 539
From: Kelowna BC
I had a local lock-smith guy (supposedly the guy to do this type of work I was told and after was more than happy with), not only program but supply my FOB's (car came with one aftermarket unit only). He charged me $100 each to buy, ship in, program and confirm usage of the FOB's. Same for a 2nd key; $100 to buy and cut a new key using the VIN IIRC.
Now mine's an 04, which are I understand easier to source FOB's. But still food for thought...
Now mine's an 04, which are I understand easier to source FOB's. But still food for thought...
Le Mans Master
Joined: Feb 2012
Posts: 6,644
Likes: 479
From: OK
C5 fob sync and retrain
Try this:
Press and HOLD the LOCK & UNLOCK buttons down at the same time. Hold them until the horn BEEPS. That procedure SYNCs the FOBs
If that doesn't work, you will need to RE- Program all your FOBS.
You do that using the IPC DIC.
Here is the procedure for RE- PROGRAMING the FOBS. NOTE!! You have to re-program ALL of your FOBS at the same time!
1. Turn ignition on.
2. Turn radio off.
3. Press Driver Information Center(DIC) RESET button to clear all messages.
4. Press OPTIONS button on DIC until display is blank.
5. Press and hold RESET button for 3 seconds.
6. Press OPTIONS button until FOB TRAINING is displayed.
7. Press RESET button to begin programming sequence.
8. Simultaneously press and hold LOCK and UNLOCK buttons on first remote for 13 seconds. Message will appear when remote is programmed. Repeat this step for additional remotes. Again,, You have to program ALL your FOBs during this session or the ones that you didn't program will not work.
9. Turn ignition off and remove keys from ignition.
10. Test remotes.
You will find the Tire Pressure Monitor training sequence in this same screen.
Might check out the link below too...
https://www.corvetteforum.com/forums...em-solved.html
Try this:
Press and HOLD the LOCK & UNLOCK buttons down at the same time. Hold them until the horn BEEPS. That procedure SYNCs the FOBs
If that doesn't work, you will need to RE- Program all your FOBS.
You do that using the IPC DIC.
Here is the procedure for RE- PROGRAMING the FOBS. NOTE!! You have to re-program ALL of your FOBS at the same time!
1. Turn ignition on.
2. Turn radio off.
3. Press Driver Information Center(DIC) RESET button to clear all messages.
4. Press OPTIONS button on DIC until display is blank.
5. Press and hold RESET button for 3 seconds.
6. Press OPTIONS button until FOB TRAINING is displayed.
7. Press RESET button to begin programming sequence.
8. Simultaneously press and hold LOCK and UNLOCK buttons on first remote for 13 seconds. Message will appear when remote is programmed. Repeat this step for additional remotes. Again,, You have to program ALL your FOBs during this session or the ones that you didn't program will not work.
9. Turn ignition off and remove keys from ignition.
10. Test remotes.
You will find the Tire Pressure Monitor training sequence in this same screen.
Might check out the link below too...
https://www.corvetteforum.com/forums...em-solved.html
Last edited by 73Corvette; May 8, 2015 at 04:53 PM.
Thread Starter
Racer
Joined: May 2011
Posts: 254
Likes: 1
From: White Bear Lake Minnesota
Thread Starter
Racer
Joined: May 2011
Posts: 254
Likes: 1
From: White Bear Lake Minnesota
C5 fob sync and retrain
Try this:
Press and HOLD the LOCK & UNLOCK buttons down at the same time. Hold them until the horn BEEPS. That procedure SYNCs the FOBs
If that doesn't work, you will need to RE- Program all your FOBS.
You do that using the IPC DIC.
Here is the procedure for RE- PROGRAMING the FOBS. NOTE!! You have to re-program ALL of your FOBS at the same time!
1. Turn ignition on.
2. Turn radio off.
3. Press Driver Information Center(DIC) RESET button to clear all messages.
4. Press OPTIONS button on DIC until display is blank.
5. Press and hold RESET button for 3 seconds.
6. Press OPTIONS button until FOB TRAINING is displayed.
7. Press RESET button to begin programming sequence.
8. Simultaneously press and hold LOCK and UNLOCK buttons on first remote for 13 seconds. Message will appear when remote is programmed. Repeat this step for additional remotes. Again,, You have to program ALL your FOBs during this session or the ones that you didn't program will not work.
9. Turn ignition off and remove keys from ignition.
10. Test remotes.
You will find the Tire Pressure Monitor training sequence in this same screen.
Might check out the link below too...
https://www.corvetteforum.com/forums...em-solved.html
Try this:
Press and HOLD the LOCK & UNLOCK buttons down at the same time. Hold them until the horn BEEPS. That procedure SYNCs the FOBs
If that doesn't work, you will need to RE- Program all your FOBS.
You do that using the IPC DIC.
Here is the procedure for RE- PROGRAMING the FOBS. NOTE!! You have to re-program ALL of your FOBS at the same time!
1. Turn ignition on.
2. Turn radio off.
3. Press Driver Information Center(DIC) RESET button to clear all messages.
4. Press OPTIONS button on DIC until display is blank.
5. Press and hold RESET button for 3 seconds.
6. Press OPTIONS button until FOB TRAINING is displayed.
7. Press RESET button to begin programming sequence.
8. Simultaneously press and hold LOCK and UNLOCK buttons on first remote for 13 seconds. Message will appear when remote is programmed. Repeat this step for additional remotes. Again,, You have to program ALL your FOBs during this session or the ones that you didn't program will not work.
9. Turn ignition off and remove keys from ignition.
10. Test remotes.
You will find the Tire Pressure Monitor training sequence in this same screen.
Might check out the link below too...
https://www.corvetteforum.com/forums...em-solved.html
Thread Starter
Racer
Joined: May 2011
Posts: 254
Likes: 1
From: White Bear Lake Minnesota
Check with your local parts stores. Many have a device that can check to see if the FOB's are actually transmitting. If not at the parts store, try a GM dealership. Many have the same type of testing equipment. That would let you possibly rule out the FOB's or directly implicate them.
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Team Owner
Joined: Jul 2012
Posts: 34,479
Likes: 532
From: Central PA. - - My AR15 identifies as a muzzleloader
I believe in the Beer Fairy
FYI Guys, I recently asked a similar question and was given THIS RESPONSE which worked like a charm. Thanks to 65GGvert for pointing me in the right direction.
Team Owner
Joined: Jul 2012
Posts: 34,479
Likes: 532
From: Central PA. - - My AR15 identifies as a muzzleloader
I believe in the Beer Fairy
FYI to the Op, you can't see if the solder joints are bad or not. Not even under quality magnification. Btdt with surface mount stuff in the past, to include my hvac head unit. I'd be hitting them with a solder iron quick just to be sure, but it's your call. Mine works great!
Thread Starter
Racer
Joined: May 2011
Posts: 254
Likes: 1
From: White Bear Lake Minnesota
Whoops, sorry. Hadn't seen you had already posted that.
FYI to the Op, you can't see if the solder joints are bad or not. Not even under quality magnification. Btdt with surface mount stuff in the past, to include my hvac head unit. I'd be hitting them with a solder iron quick just to be sure, but it's your call. Mine works great!
FYI to the Op, you can't see if the solder joints are bad or not. Not even under quality magnification. Btdt with surface mount stuff in the past, to include my hvac head unit. I'd be hitting them with a solder iron quick just to be sure, but it's your call. Mine works great!
Which solder iron are you guys using? I have a Weller pen style but I think it's to big...
Team Owner
Joined: Jul 2012
Posts: 34,479
Likes: 532
From: Central PA. - - My AR15 identifies as a muzzleloader
I believe in the Beer Fairy
If it's just got a copper tip, you can grind the tip finer and just use that. I use a Xytronic I got from Jameco with replaceable tips that are real easy to tin. Their catalog page will show the tip shapes you can buy. I think I used a 1/16" chisel tip for that.
On both my fob and hvac I looked under pretty high magnification (20x loupes w/light) and in both cases I would have told you I was wasting my time. Well, it worked. No saying it'll help yours, but it's certainly worth a shot. You don't even have to add solder, just touch the parts again so it re-wets the pads and you'll be fine. If it ever fails again, then get a tiny bit of solder involved. You have to be careful with that surface mount chip, those pins are on .025 centers, very easy to bridge if you're adding solder. Then it's not fun to remove afterward. Clean your iron tip with a paper towel weted with water (just damp). Wipe off all the black goop so it's clean, then touch it up.
Part of the trouble with these parts is they are not "soldered" perse, they are ultrasonic welded on. After a few 1000 cycles of heat and cooling, the parts break off.
On both my fob and hvac I looked under pretty high magnification (20x loupes w/light) and in both cases I would have told you I was wasting my time. Well, it worked. No saying it'll help yours, but it's certainly worth a shot. You don't even have to add solder, just touch the parts again so it re-wets the pads and you'll be fine. If it ever fails again, then get a tiny bit of solder involved. You have to be careful with that surface mount chip, those pins are on .025 centers, very easy to bridge if you're adding solder. Then it's not fun to remove afterward. Clean your iron tip with a paper towel weted with water (just damp). Wipe off all the black goop so it's clean, then touch it up.
Part of the trouble with these parts is they are not "soldered" perse, they are ultrasonic welded on. After a few 1000 cycles of heat and cooling, the parts break off.
Thread Starter
Racer
Joined: May 2011
Posts: 254
Likes: 1
From: White Bear Lake Minnesota
I tried the slodering method last night with no luck 
Im thinking I might be SOL and need to go with the TPMS conversion from Gene Culley? I started another thread with some questions I have about that route...
https://www.corvetteforum.com/forums...onversion.html
Im thinking I might be SOL and need to go with the TPMS conversion from Gene Culley? I started another thread with some questions I have about that route...
https://www.corvetteforum.com/forums...onversion.html
Le Mans Master
Joined: May 2008
Posts: 5,892
Likes: 47
From: Helotes TEXAS
Took both my remotes to the auto parts store to have them checked... original one is DEAD and the new one I purchased is putting out a signal... BUT it still won't train using either one of the options / methods posted above.
Looks like its time for a NEW CAR !
Looks like its time for a NEW CAR !
Team Owner
Joined: Jul 2012
Posts: 34,479
Likes: 532
From: Central PA. - - My AR15 identifies as a muzzleloader
I believe in the Beer Fairy
I tried the slodering method last night with no luck
Im thinking I might be SOL and need to go with the TPMS conversion from Gene Culley? I started another thread with some questions I have about that route...
https://www.corvetteforum.com/forums...onversion.html
Im thinking I might be SOL and need to go with the TPMS conversion from Gene Culley? I started another thread with some questions I have about that route...
https://www.corvetteforum.com/forums...onversion.html
Thread Starter
Racer
Joined: May 2011
Posts: 254
Likes: 1
From: White Bear Lake Minnesota
so investing in the cheaper sensors might be my best route!
Instructor
Joined: Dec 2005
Posts: 147
Likes: 3
From: Howell NJ
Yeah thats the conclusion I am coming to, eitherway if/when I do purchase and install the new reciever all will be new and working perfectly I hope!! I also dont plan on selling this car, I want to pass it on to my son who is only 9 months old right now so investing in the cheaper sensors might be my best route!
so investing in the cheaper sensors might be my best route!
Team Owner
Joined: Jul 2012
Posts: 34,479
Likes: 532
From: Central PA. - - My AR15 identifies as a muzzleloader
I believe in the Beer Fairy
Before you give up on soldering, I would go over every accesable solder joint with a soldering iron. my second fob did not work for years, and when the first one died I tried soldering it and that fixed it, so I took the second one and hit the obvious connections and it did not work, so I took it apart again and touched up all of the connections I could get to and it worked. I only costs time so it is a cheap fix if it works.
With nothing talking to that receiver, odds are that's the issue.