473_474S 11-02 Blister Packs.qxd 1/16/2003 8:39 AM Page 4 REPLACEMENT TRANSMITTER Model 473S, 3 Button HF, Stealth Code Remote REPLACEMENT TRANSMITTER The following Learn Routine can be used to program this replacement transmitter to the system. In order to enter the Learn Routine, the system’s Valet/Program switch must be plugged into the BLUE port. 1. 2. 3. 4. Door. Open a door. Key. Turn the key to the ON position. Choose.