1. tparker002@nc.rr.com
  2. General Discussion
  3. Saturday, 07 March 2020

I installed a px6 10.4 inch vertical screen unit in my 2003 Lexus GX470.  The install was amazingly easy.  I added an Etsy license plate backup camera, also pretty easy install however when I put the car in reverse, the image from the camera doesn’t come up.  If I go to Apps, hit the system app Car Monitor, then the camera works as anticipated, no display when in park but pops up when I put the car in reverse.

 

when I originally installed the unit, I only got sound from the right front speakers and would never have found the amp controls in “Console” if it weren’t for a YouTube video.  Is there another setting to allow the backup camera to override all other apps when the car goes into reverse?



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On the older units there is a trigger wire you need to solder together with the camera hot wire. I am assuming there is one on the PX6 unit as well

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Undo

Hello fellow GX470 owner. For reference this link has some good information: https://becomethesolution.com/news/lexus-gx470-2003-2009-rear-view-camera-installation-aftermarket

Your PX6 unit should have a short brown wire marked "Back". This is what triggers reverse camera video over ride. Most aftermarket reverse camera feed cables feature a red wire to feed the 12v all the way from the backup lights. Simply connect the red wire to the 12v positive side of the backup lights then connect the brown wire to the red wire at the head unit. Also check your user settings for reverse camera enable.

Note that reverse override kills everything including volume controls while the backup camera is activated. Some owners have found the reverse 12v feed in the dash or near the shifter as well. I would love to hear from you about your PX6 in your GX470 regarding which vehicle profile file you are using and if your heater controls, OEM temperature and clock information VFD display and compass are working? 

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