Mack® Truck Pinnacle Series (CXU Series) Operator's Manual 21394648 - PDF DOWNLOAD

128 OPERATION The following checks may be used to diagnose any problems which may arise with Remote Keyless Entry system operation. Remember to check all transmitters.

1. Lower the windows, turn the ignition key to the OFF position and close the doors.

2. Stand near the driver’s side door, aim the transmitter at the vehicle and operate both functions of the transmitter. Repeat for all transmitters, if applicable.

• If a single function on one transmitter is inoperative, replace the transmitter.

• If all functions on any of the transmitters are inoperative, reprogram all transmitters and repeat the troubleshooting procedures. Refer to the "Programming the Transmitter" section.

• If one transmitter cannot be programmed, replace the battery in the transmitter. Refer to the "Battery Replacement" section.

3. If all functions on all transmitters operate, stand approximately five feet from the vehicle (at several points around the vehicle), and check the operation of all transmitters at each point.

• If one transmitter does not operate at some point where another transmitter does operate, replace the battery in the transmitter that does not operate.

• If all transmitters operate approximately five feet from the vehicle, the system is operating properly and no repairs should be attempted.

Programming the Transmitter: 1. Turn the ignition switch to the ON position.

2. Access the keyless entry module, located behind the D-Panel.

3. Push the Program switch on the keyless entry module three times. The program LED on the module will be solid, to indicate you are now in the Transmitter Programming Mode.

4. Press any button on one of the transmitters until the horn responds with a chirp and the LED will flash once, to confirm the first transmitter is now programmed.

5. If necessary, repeat Step 3 to program the 2nd, 3rd and 4th transmitters.

Note: If more than four transmitters are programmed, the system will only retain the last four transmitters programmed.

6. To exit Programming Mode, turn the ignition switch to the OFF position, or simply wait 15 seconds. The LED will be off to confirm exit.