REPLACEMENT TRANSMITTER Model 474V, 4 Button HF, Stealth Code Remote The following Learn Routine can be used to program this replacement transmitter to the system. In order to 1. 2. 3. REPLACEMENT TRANSMITTER Door. Open a door (except 210HV). Key. Turn the key to the ON position. Choose. Within 5 seconds press and release the Valet/Program button the number of times corresponding to the desired channel listed below. Once you have selected the channel, press the Valet/Program button once more and hold it.