Front Passenger Side Door Entry Lock Function does not Operate: Description
WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.
If the front passenger door entry lock function does not operate but the entry unlock operation operates, the communication line between the vehicle and electrical key transmitter is normal Either of the following may have occurred. 1) the entry lock switch is malfunctioning, or 2) the front door ECU RH receives the entry lock switch ON signal, but is unable to send the signal to the certification ECU through CAN communication.