RCDLR Locks Up When Programming Or No Communication - keywords chime chirp detected dic forb horn key lock message no program reminder rke transmitter up

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Some technicians may comment that the RCDLR (Remote Control Door Lock Receiver) "Locks Up" during programming or when attempting to communicate or there is no communication with the RCDLR. This may be the result of a time out feature within the RCDLR or when programming the RCDLR. It is possible that the necessary fuses that needed to be removed for programming were not removed.

1. Prior to establishing communication with the RCDLR, press the mode switch as if you were attempting to start the vehicle. This will "wake up" the RCDLR and should allow communication. If there is a delay when attempting to communicate with the RCDLR, the mode switch may need to be pressed again to "wake up" the RCDLR.
2. If attempting to program the RCDLR and the module "Locks Up" it can be reset by removing the RCDLR fuse (#11 in the UBEC) for at least 30 seconds or longer and then reinstalling it. Once this fuse is reinstalled in the UBEC, there will be a 2 minute window to restart the programming of the RCDLR through TIS2WEB. Failure to restart the programming of the RCDLR through TIS2WEB within 2 minutes may cause programming to fail and this procedure will need to be repeated. It is recommended that the Tech 2 remain connected to the vehicle and that the TIS2WEB application is open and ready to program the vehicle prior to reinstalling RCDLR fuse #11 into the UBEC. Once you are ready to program, install fuse #11 and initialize programming immediately.

Important: Prior to programming per the information below, the Radio and HVAC Fuses MUST be removed and the ignition must be in "Key On Engine Off Mode" The radio and HVAC fuses can be located in the BCM fuse block on the passenger's side floor electrical center. One of the fuses is labeled RDO/S'BAND/VICS and the other is labeled HVAC/PWR SND.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.