Rear Door RH Entry Unlock Function does not Operate: Description
WARNING: This page is about a different car, the 2013 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
If the passenger side rear door entry unlock function does not operate but the entry lock function operates, the communication line between the vehicle and electrical key transmitter is normal. The part at fault may be a touch sensor circuit (certification ECU [smart key ECU assembly] → passenger side rear door outside handle → passenger side rear door electrical key oscillator).