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Need help with key FOB's!!!

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Old Nov 17, 2004 | 11:15 PM
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Default Need help with key FOB's!!!

I have a 2000 C5.

I have three GM key FOB's.

I can never get more than one these FOB's to work.

I have tried all of the synchronization techniques from the owner's manual, and still, I can only get one to work.

I know all three FOB's and their batteries are good since I can synchronize all three of them separately, just not so they all work at the same time.

The owner's manual says I should be able to synchronize up to three FOB's.

Also, I have very little range on my FOB's. The batteries are all new, so that isn't the problem.

Is there anything I can do to increase the distance between my car and the FOB's so they still have reception???

Thanks!

Rob
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Old Nov 17, 2004 | 11:36 PM
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Originally Posted by Rob4092xx
I have a 2000 C5.
I have three GM key FOB's.
I can never get more than one these FOB's to work.
I have tried all of the synchronization techniques from the owner's manual, and still, I can only get one to work.
I know all three FOB's and their batteries are good since I can synchronize all three of them separately, just not so they all work at the same time.
The owner's manual says I should be able to synchronize up to three FOB's.
Also, I have very little range on my FOB's. The batteries are all new, so that isn't the problem.
Is there anything I can do to increase the distance between my car and the FOB's so they still have reception???
Thanks!
Rob
Hi Rob, Your last question may be the easiest - the distance is limited on all of them - but the upside is that the vette alarm goes off a lot less than my DD - that remote likes to set off the alarm when I sit in the furthest chair away from the DD (botton pressed by other stuff in my pocket).

So let me make sure I read your symptoms right, and ask some basic questions.

All 3 remotes work when synced up with the car, just not together - can I assume they're all the same part number, and what is that part number?

When you say you followed the process in the manual when you synced them - I read this to mean you did the proceedure accessed through the dash buttons and DIC, and that you went through the cycle 3 times, incrementing the remote number each time through it. first for remote 1, then remote 2, then remote 3, and using a different remote on each pass?

Sorry if these seem to be basic questions, but that's the best place for us to start too...

Last edited by ptdrummer54; Nov 18, 2004 at 12:15 AM.
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Old Nov 18, 2004 | 06:10 AM
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Wow, that's puzzling. Does your remote look like this



Or this (it should look like this one)



Does your car have the memory option? Do the key fob's have a #1 or #2 on the back (this will correspond with the memory option.)? Not to be redundant but when you say you did all the things in the manual did you "re-sync" using the buttons on the fob or "re-learn" using the DIC. You are correct, you should be able to have 3 transmitters trained to your car. What I'm hearing indicates to me that one or more are replacement transmitters and the car is trained for it's original two and one of the three that you are trying to program. If this is the case, it will only accept one of them (now three total) if you did not "re-train" the car. Any additional information that you can provide may help us narrow it down.

Paul

Last edited by talon90; Nov 18, 2004 at 06:29 AM.
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Old Nov 18, 2004 | 10:21 AM
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PT and Talon:

First off, thanks for your help!

My FOB's look like the second photo.

I tried synching and re-trainig them using the DIC procedures and the "horn honk" procedure.

When I use the DIC procedure, the system will program the 1st FOB. When it goes to learn the second FOB, it doesn't work any further. Therefore, I can only get one FOB programmed.

Doesn't matter which of the three it is, only one will program.

Two of the FOB's came with the car when it was new. The third was purchased later at the dealer.

I can't get the horn to honk when I try to re-train any of them????

Rob
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Old Nov 18, 2004 | 10:27 AM
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Also, I don't know where the FOB antenna is inside the car, but can't it be extended so it will pick up the FOB's at a further distance?
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Old Nov 18, 2004 | 10:57 AM
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For some reason (perhaps I'm losing it) I though that there was a post or link to an article that said that only 2 FOBs could be assigned to the same car??
Could have been outside the forum.


Good luck. I'll look for it.

Regards
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Old Nov 18, 2004 | 11:45 AM
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Originally Posted by Rob4092xx
PT and Talon:

First off, thanks for your help!

My FOB's look like the second photo.

I tried synching and re-trainig them using the DIC procedures and the "horn honk" procedure.

When I use the DIC procedure, the system will program the 1st FOB. When it goes to learn the second FOB, it doesn't work any further. Therefore, I can only get one FOB programmed.

Doesn't matter which of the three it is, only one will program.

Two of the FOB's came with the car when it was new. The third was purchased later at the dealer.

I can't get the horn to honk when I try to re-train any of them????

Rob
Hi Rob, The method that you do from the dash buttons and DIC is the only one that will work in this area - it has been a while since I was last in there so I am rusty on the actual steps involved, but I have 2 programmed on my car and you should be able to do 3.

The receiver is located by the gas cap - they are so limited in distance that I believe they now have 4 or 5 receivers on the C6s. The receiver does dual purpose - key FOBs and it is also receives the signals from the TPS sensors in the tires.

The only thing I can think of to do would be to run through the proc tinight when I get home and list each and every step of the process as I relearn my 2 FOBS, then post the steps. I usually do not agree with posts that have people disconect their battery to reset everything, but for this problem I am starting to wonder if this will be something to try...
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Old Nov 18, 2004 | 01:32 PM
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Are you programming and Synchronizing the FOBs? Also, the range is greater at the sides and rear of the car, versus the front. This is due to the positioning of the antenna in the rear left hatch/trunk area.


Programming Transmitters
Turn the ignition to ON.
Turn the radio to OFF.
Press the RESET button in order to clear any IPC warning messages.
Press and release the OPTIONS button on the DIC to scroll through the display options until the IPC display is blank.
Press and hold the RESET button for 3 seconds.
Press the OPTIONS button until FOB TRAINING message is displayed.
Press the RESET button in order to begin the programming sequence. The message HOLD LK + UNLK 1ST FOB will be displayed.
Simultaneously press and hold the LOCK and UNLOCK buttons on the first transmitter for 15 seconds. The IPC will indicate when that transmitter is programmed and when to proceed to the next. Repeat this procedure for each additional transmitter or press the OPTIONS button to exit.
Programming Cancellation
The receiver will cancel the programming sequence if any of the following conditions occur:

The program mode is exited through the DIC.
The ignition is turned to OFF.
The three transmitters have been programmed.
The RFA system has been in the program mode for longer than 2 minutes and no transmitters have been learned.
If the program mode is cancelled with less than three codes stored, the receiver will only accept the codes just stored. If the program mode is cancelled before any code is stored, the codes still remain valid.

The receiver retains all current access codes in memory if either of the following conditions occur:

A programming sequence is interrupted.
The battery is disconnected.


Synchronizing Transmitters
Preform the following procedure if a transmitter cannot communicate or becomes out of synchronization with the receiver:

Move a programmed transmitter within range.
Press the LOCK and UNLOCK buttons on the transmitter simultaneously for 7 seconds.
The horn will chirp once when the transmitter is synchronized. Repeat this procedure for each additional transmitter if needed.
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Old Nov 18, 2004 | 04:21 PM
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Originally Posted by WhiteC5Vette
Are you programming and Synchronizing the FOBs?
Rob needs to Program them using proceedure below

Programming Transmitters
Turn the ignition to ON.
Turn the radio to OFF.
Press the RESET button in order to clear any IPC warning messages.
Press and release the OPTIONS button on the DIC to scroll through the display options until the IPC display is blank.
Press and hold the RESET button for 3 seconds.
Press the OPTIONS button until FOB TRAINING message is displayed.
Press the RESET button in order to begin the programming sequence. The message HOLD LK + UNLK 1ST FOB will be displayed.
Simultaneously press and hold the LOCK and UNLOCK buttons on the first transmitter for 15 seconds. The IPC will indicate when that transmitter is programmed and when to proceed to the next.

This sounds like where Rob is running into a problem - is there a dash button you have to hit here to tell the comp to program FOB 2 after FOB 1 is finished (& FOB 3 on the next pass)?

Repeat this procedure for each additional transmitter or press the OPTIONS button to exit.
Programming Cancellation
The receiver will cancel the programming sequence if any of the following conditions occur:

The program mode is exited through the DIC.
The ignition is turned to OFF.
The three transmitters have been programmed.
The RFA system has been in the program mode for longer than 2 minutes and no transmitters have been learned.
If the program mode is cancelled with less than three codes stored, the receiver will only accept the codes just stored. If the program mode is cancelled before any code is stored, the codes still remain valid.

The receiver retains all current access codes in memory if either of the following conditions occur:

A programming sequence is interrupted.
The battery is disconnected.

Answers above in BOLD
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Old Nov 18, 2004 | 04:22 PM
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ttt
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Old Nov 18, 2004 | 08:53 PM
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OK Rob, finally got home.

So, when you go into the FOB Training sequence and the DIC tells you to hold Lock and Unlock on the First FOB, does the display change to First Fob Learned (or something like that) after 15 secs or so?

If so, does it then change to hold Lock and Unlock on the Second FOB, and if so does that complete successfully too?

Thanks, PT
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Old Nov 18, 2004 | 10:18 PM
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Love all of you guys!

I did it exactly as several of you recommend when I got home tonight and it worked perfectly!

Thanks,

Rob
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