I HAVE A 2004 RX 330 AND MY PROBLEM IS THE REAR DOOR MAKES AN ATTEMP TO OPEN WHEN USING THE REMOTES BUT DOESNT.IT OPENS MANUALLY AND WILL CLOSE USING THE REMOTES BUT IT JUST WONT OPEN USING THE REMOTES.

May be a relay problem

Use the manual release inside the trunk, it is tiny cable with a plastic handle on it.

Here are the instructions from the factory manual. They must be followed exactly.
2004 ES330
1. Driver's door open, all other doors closed, key removed from ignition switch.
Within 5 seconds:
Insert and remove the key from the ignition switch twice.

2. Within 40 seconds:
Close and open driver's door twice.
Insert and remove the key from the ignition switch.

3. Within 40 seconds:
Close and open driver's door twice.
Insert the key into the ignition switch and close the driver's door.

4. Switch ignition ON and OFF:
A. Once to program a key remote transmitter code whilst retaining the original codes.
B. Twice to program a key remote transmitter code whilst erasing the original codes.
C. Three times to check how many key remote transmitters are currently registered.
D. Five times to erase all registered codes.

5. Remove key from ignition switch. System should now lock and unlock vehicle
once, twice or five times depending which mode has been selected. One to four
times, slowly, to indicate number of key remote transmitters registered.

6. Within 40 seconds:
Press and hold LOCK and UNLOCK buttons simultaneously for 1.5 seconds.
Within 3 seconds: Press any key remote transmitter button.

System should now lock and unlock vehicle once to confirm registration or twice
to indicate registration has failed.

7. Within 40 seconds:
To program additional remotes repeat step 60 now on each additional
remote you want programmed.
8. To exit programming mode open driver's door or insert key into ignition.
9. Step out of car with remote(s) in hand and test remote(s).

See page 64 of manual...open and close rear window using rear door's window switch. It will reset the driver's door master, which will work as it should.

Sounds like either the hatch is not closed completely or the switch is says the door is still open. verify if the door is shut tight.

although all the doors etc may be closed over use and wear the plastic begins to wear and bend even break so something is showing its not making a good closed circuit ...try one switch at a time to see if it goes out including trunk glove-box etc.also make sure to click the gas cap three full turns if still nothing try disconnecting the+positive terminal on the battery for 3 minutes to allow the {OBC} on board computer to reset itself ...

first thing you should do is try to have a shop open the door with a beak in kit. if they can't get the door open this way the door trim panel will have to be pryed off. it is difficult to do with the door closed but it can be done. the trim pane will probably be ruined during removal. once the trim panel is removed the door latch can be released from the inside.

when you change the battery you must reinitialize all the windows, sunroof and rear gate. you must operate each window from its own button, holding it to a count of 4 at the very bottom and very top. for the sunroof you must hold the button in the close position and let the roof go thru its complete cycle. the rear gate must be opened manually and closed by pushing close button on gate.

The buttons inside the vehicle are syncronized/programmed with the operatus that physically opens and closes your garage door, not the operner... The garage door opener needs to have a "programming" feature switch that must be set to "programming" before you can program the buttons inside the car...

There are step by step instructions in your owners manual... This could be a 2 person operation...

I have a 2004 RX and had the same problem, simply because I didn't follow the instructions precisely..

Good luck...Oz

the switch to detect hatch close is not being pressed down ..check at the striker there is a switch there confirm it is is working by pressing down on it with your finger and watching the light on the instrument panel