KEYLESS ENTRY

[GULFTANGO]

The key fob for my 97 will lose its memory every three days. The passive entry is always on and cannot be shut off. Have replaced the battery in it and the car. Any ideas? Have ordered a new fob.

 

[vette747]

I’m pretty sure you need a new fob. This is a common problem. The receiver could be bad if there was a problem with the tire pressure monitor system. If the TPS works fine that point to the fob. Check if you have any codes in the RFA module.

You can try to reprogram. There are two type of programming. 1- Is synchronizing. Hold lock and unlock button at the same time for 20-40 sec. The horn will beep. 2- Reprogram with the DIC.

You can try with an other fob. Or ask a C5 buddy to give you his fob for a test. You reprogram and you see if the fob is really the problem.

here is the programming procedure in case you need it.
Fob programming
1-Turn the ignition to RUN
2-Turn the radio off
3-Press the RESET button in order to clear any IPC warning messages
4-Press the Option button on the DIC until the IPC display is blank in order to enter the program mode
5-Press and hold the Reset button for 3 seconds
6-Press the option button until FOB Training message is displayed
7-Press the Reset button in order to begin the programming sequence.
8-Simultaneously press and hold the lock an unlock buttons on the first transmitter for 12 seconds. The IPC will indicate when that transmitter is programmed and when to proceed to the next .Repeat this step for each transmitter.

 

[TorchRedC5]

A new fob should do it