My brothers 99 FRC has a crazy problem with the FOB's.

I can not program my FOB's. The DIC will only let me get to the tire training selection on the DIC.

The FOB's work intermittently. I keep having to hold down the lock and unlock button for 7 seconds for them to work again.

After awhile they just stop again. It's driving me nuts.

Anyone else ever had this problem. Why won't the DIC let me reprogram the key FOB's.

Thanks for your help.

 

hey,

I'm new here.. comming from sweden...
I have exactly the same problems right now with mine.. I would like to get some idees also...

brgds Costas

 

Are you sure you're doing it properly?

Blank Page

There is a blank page at the end of the OPTIONS menu.
When the blank page is displayed, you can access the
following items:

FOB TRAINING: This option allows you to match the
RFA transmitter(s) to your vehicle. You can access this
option by pressing and holding RESET for three
seconds while you are on the blank page at the end of
the OPTIONS menu. The message FOB TRAINING
will be displayed. See “Matching Transmitter(s) To Your
Vehicle” in the Index for more information.

TIRE TRAINING: The Tire Pressure Monitor (TPM)
operates with battery-powered sensors that are located
inside the valve stems on each tire. Each sensor has a
unique ID code so the vehicle knows the tire location of
the sensor. When the vehicle reaches a speed of greater
than 15 mph (24 km/h), the sensors begin to send the
tire pressure readings to a receiver inside the vehicle.
These readings are displayed when using the GAGES
button on the DIC. If you are unable to display your tire
pressures while the vehicle speed is greater than 15 mph
(24 km/h), you may need to have your sensor ID codes
learned by the vehicle. See your dealer.

To match transmitters to your vehicle:

1. Turn the ignition key to ON.
2. Clear any warning messages on the Driver
Information Center (DIC) by pressing the
RESET button.
3. Press the OPTIONS button on the DIC several times
until the blank page is displayed, then press and hold
the RESET button for two seconds.
4. When the message FOB TRAINING is displayed,
push the RESET button once. The message
HOLD LK + UNLK 1ST FOB in the DIC will
be displayed.
5. Press and hold the LOCK and UNLOCK buttons on
the transmitter simultaneously for 15 seconds.
6. When a transmitter is learned (matched), the DIC
will display FOB LEARNED and then prompt you
to learn the next transmitter.
7. Repeat Steps 5 and 6 for each additional transmitter.
8. Remove the key from the ignition.

The programming mode will shut off if:


You don’t program any transmitters for two minutes.

You take the key out of the ignition.

You have programmed three transmitters.

 

Fob(s) could be defective. Sometimes defective fobs need to be constantly re-synced as you discribed - holding the lock & unlock down until the horn beeps.

Do you have (or can borrow) another known working fob to try.

I assume the tire sensors are working properly.

 

Thanks for the info, but I have the service manual.

The Car is a 99 FRC with passive remotes, no ( #1 or #2) marked on the FOB's.

I follow the instructions by putting in the key and use the options button to page thru until the blank page comes up.

When I hit the Reset Button, I get Tire Training, not FOB Training.

BTW, I changed out the rim and tires lately and no longer have TPS's installed, is this causing my PCM to not work correctly ?

Is there something wrong with my PCM ? I had the column fix done the latest one in August and they said that they could not reflash my PCM because it was locked.

 

FOB's are new.

 

I was trying to ascertain if the receiver was working. (The receiver located above the left rear tire well is responsible for the TPS & Fobs)

Someone with more specialized knowledge will have to jump in.

 

I had the same problem if during re-sync the horn beeps once the FOB is ok if it beeps twice the FOB is bad, or anyway thats what mine did. Bassspring

 

Thanks for the info.

My fobs are beeping twice however I can not access the reprogramming menu on the DIC.

Somebody must know what's up.

 

I assume you tried new batteries ?
When I replaced mine 2 out of the three new batteries I bought were DOA

 

FOB's are new. They will work intermittenly and then just quite working.

The major snafu is that I can not access the DIC to reprogram new FOBS.

I recently changed my rims and tires so I don't have TP sensors. The DIC only lets me go to the reprogram tire screen and not the FOB screen.

 

I'm willing to venture a guess that whomever programmed the PCM and locked it, probably did something they shouldn't have done in there and locked out the FOB function. Your best route would be to head to the dealer and have them reflash the PCM. Also while doing that, have them put in the software/firmware updates needed for your car.

 

I think you are confusing the PCM (Powertrain Control Module) and the BCM (Body Control Module).

The BCM is responsible for the RPO table (which turns on/off the TPMS function), the column lock, and also works with the RFA (Remote Function Actuator - the radio receiver that picks up the key fob transmissions) to lock/unlock the vehicle.

Have you tried displaying DTC data to see if there is anything posted that may be affecting your key fobs or other BCM functions ???

Post any DTC you find and someone can help you diagnose what they mean.

 

The problem started when the column locked up and the car had to be taken to the dealer. Prior to that it worked fine.

The dealer did the latest CL upgrade but said that they could not reflash the PCM because it was locked and they did not have the software to unlock it.

I don't have any codes and I have all of the manuals. I am pretty handy with a wrench but I'm not familiar with all of this fancy programming crap.

I guess I need to start reading up about that now too. I can do 90% of the stuff but some of the more complicated problems require diagnostic software and equipment.

The car is on the lift at the moment waiting to do drive line and replace a faulty slave..

 

Just because the FOBs are new doesn't mean they have fresh batteries!

All this could be bad batteries, an easy thing to verify

 

I'm wondering if the dealer understands what they are doing .... there is no reflash listed for the PCM in the GM Recall Bulletin 04006C ... just removal of the locking plate and installation of a wiring harness.

See this for the bulletin.

http://www.wscc.ws/Clo%20Lock%20Recall.pdf

Also, to dump the codes, all you have to do is a few pushes of DIC buttons and all will be revealed ....

https://www.corvetteforum.com/techti...D=26&TopicID=1

Perform this procedure and let's see if the BCM (which, as I said before is what controls the fob lock/unlock function, not the PCM) has any codes set. List ALL codes for all modules, and let's see what comes up.

 

^^Good idea. But that has already been tried with no success. It's my car. Was one of the first things I tried.

 

No codes. Not sure if dealer screwed up BCM with attempted flash.

The new fix was to suppose to fix the fuel cut-off so that it would not cut the fuel off if it got the column lock since they removed the locking plate.

May be need to find some one with a tech 2 to fix it.

 

You're confusing the PCM and BCM again. The dealer would NOT flash the Body Control Module for the column lock ... they would flash the Powertrain Control Module because that is where the fuel cut-off logic is located.

The car has NO codes ????? That's extremely unusual. Even in a "perfect" car there are usually two or three Uxxxx codes in a couple of the computers. You stepped through every module checking in manual mode ???

You say the TPMS are not installed in the car ... either you had someone go into the BCM with a Tech2 (which is more likely when something got messed up) or you'll be getting "SERVICE TPMS" messages on the DIC. Are you getting the SERVICE warnings for the TPMS ???? I'll bet you are if you are getting the TPMS programming option on the DIC .... and that tells me YOU HAVE CODES.

 

The car has one code for no comm with radio because it has an after market Alpine Head Unit. It has no other codes.

The car has not been driven much since the Corvette's of Carlisle show due to some mechanical problems.

One of the previous owners, probably the last one put in an after market blower fan that had no bottom rubber seal and when we turned on the air conditioner because it was so hot up in Carlilse, water started pouring everywhere in the passenger side footwell.

Long and short of it the water drowned the BCM and we were broke down in the middle of the road. Really sucked. Anyway, I figured away to temporarily fix the situation and we limped it home.

Took it all apart and found out the cause. Ordered the parts and put it back together.

Went to start the car after the repairs and got the dreaded column lock. Sent it to the dealer for the latest and greatest column lock repair.

My bro then came and picked it up, drove it home and then the clutch slave went.

Got the car back up here to the house and it has been sitting ever since.

Dealer made repairs and said that they could not reflash the PCM because it was locked.

Problems with FOB's began after dealer did the column lock repairs. I understand that the BCM (Body Control Module) works the all of the body functions but it does communicate with the (PCM).

My problem is not so much with the FOB's (Passive) or the Receiver as they work.

The issue is when I go to the DIC, I can not get passed the logging procedure on the DIC to get to the KEY FOB TRAINING message, I keep getting TIRE TRAINING MESSAGE.

When I press the reset button again the LEFT Front sensor comes up.

What I am worried about is that the dealer tried to upload (reflash the PCM) which may have caused a problem with the BCM.

Or do I just have a bad BCM. At this point, with all of the upcoming mods, the PCM will need to be reprogrammed anyway.

BTW is for a 99 FRC with Passive remotes, thanks for your help.