Had this issue. Touch sensor wasn't working. Dealer performed this tsb:
Summary of ITB13038:
IF YOU COFIRM The driver and front passenger doors will not unlock using the one-touch door unlock sensor, AND the Intelligent Key is within operating range, AND the LOCK and UNLOCK buttons on the Intelligent Key operate, AND the Touch Sensitive Door Sensor feature is set to ON. See page 2 for information about how to check the status of the Touch Sensitive Door Sensor setting. NOTE - The issue, should it occur, can also be confirmed by disconnecting the 12 volt battery negative cable, waiting 10 minutes, and then reconnecting. The one-touch door lock sensor will "reset" and begin to work correctly. ACTION Replace the BCM with the new BCM listed in the PARTS INFORMATION section. See this bulletin for further detail.