This 2004 Lexus RX330 came in with he complaint that the stoplights were not working correctly. It turned out that the LED circuit boards were faulty . Sometimes a few of the LEDs worked and sometimes none worked. This repair applies to 2004, 2005 and 2006 year models
I found that the LED circuit boards were accessible. Well kind of accessible. If you loosen, separate, turn and wiggle just right they will come out of the tail lamp housings.
It did surprise me that the LED circuit boards are actually replaceable. The local Lexus dealership said you could not purchase them by themselves. They only come as part of the assemblies. It turns out that you can (at least for now) and I did. The part numbers are 81563-0E010 and 81553-0E010.
To watch this repair please go to my YouTube channel below. Be sure to Comment, Like, Share and Subscribe. Thanks, Sparky