TL*THE CONTACT OWNS A 2011 LEXUS RX350 (NA). THE CONTACT STATED THAT WHEN THE REAR DOOR WAS OPENED, THE CHIME DID NOT INDICATE THAT DOOR WAS OPEN WHILE THE CONTACT WAS REVERSING OUT OF THE GARAGE; THE VEHICLE DOOR CRASHED INTO THE GARAGE DOOR AND WAS DAMAGED. THE DEALER STATED THAT THE VEHICLE WAS NOT EQUIPPED WITH A WARNING CHIME. THE CONTACT CALLED THE MANUFACTURER WHO STATED THAT SOMEONE FROM THE DESIGN DEPARTMENT WOULD CONTACT HIM. THE VEHICLE HAD NOT BEEN REPAIRED. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 1,300.