https://www.truck-manuals.net/mack/ OPERATION 105 REMOTE KEYLESS ENTRY — (OPTIONAL) This vehicle is equipped with a Remote Keyless Entry system. This system operates by means of a hand-held remote control that locks and unlocks the cab doors. The remote control door lock transmitters are supplied in pairs; each one is attached to a key ring.
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1. LED
4. Press and hold for 0.5 second to turn external lights on or off.
2. Press once to unlock driver side door. Press twice to unlock both doors.
5. Press once to lock doors. Press twice for horn confirmation.
3. Press and hold for 3 seconds to activate panic mode. Press and hold for 3 seconds again to cancel panic mode. Each transmitter is powered by a 3-volt battery and is water resistant. Information concerning battery replacement, troubleshooting and programming the transmitters is provided in this section. The receiver in the vehicle is capable of recognizing four transmitters. Replacement transmitters are available; however, they must be programmed to match the specific receiver (refer to the "Programming the Transmitter" section).
