My 2007 S80 has the keyless entry system with the button on the door handle. My transmitter will open the drivers door (when locked) by pulling the handle but will not lock/unlock the driver door by pushing the button located on the door. All other door buttons will lock/unlock all doors. Would I just need a new door handle with the button? Or does the solenoid in the door have anything to do with the control of the lock/unlock via the button?