I've been trying to program my new remote. I'm trying to use the auto learn feature. Manual tells me to open door, turn key to ON position, choose channel number and once more and hold the valet switch (remote package says channel 7 and manual says 1) and then while holding the valet switch press the button from transmitter to assign. Which button do I press? I've tried all 4 buttons and all I get is the 3 beeps from the remote w/ signal indicator.