How do i turn on rear entertainment system on 2006 toyota sienna

its because the vent is closed. Just open it

The Nav/Audio units in the Siennas have a huge failure rate. This is a common and expensive problem with this vehicle. It seems to revolve around a design flaw with the motherboard in them. Found a specialist site where this fault has been discussed on a regular basis -
https://www.siennachat.com/forum/15-general-discussion-gen-2/5342-2006-xle-radio-navigation-system-out.html

2000 Toyota Sienna rear Bumper cover replacement (1998 ...

? 3:40
https://www.youtube.com/watch?v=AY1BBdg3q74
Sep 20, 2013 - Uploaded by SergSpace
2000 Toyota Sienna rear Bumper cover replacement (1998-2003) .... Automotive Bumper Repair Specialist- How to repairyour plastic bumper cover ... Toyota Sienna Rear Shock Installation 2003, 2004, 2005, 2006 - Duration: ... 2015 Toyota Sienna XLE - Duration: 28:13. by MikesCarInfo 35,234 views.

Fixing My Mom's Prius: Loose Rear Bumper Cover - YouTube

have the springs checked and the shock absorbers too. not likely t be much else. Sorry, also, might be the brakes need to be checked

Your radio might have had the rear speaker knob bumped and so no sound is going to the rear speakers.

I have written a detailed step-by-step tutorial on how to remove and replace the bumper of a 2004-2007 Toyota Sienna on my blog: John Fixes Stuff How to Remove the Front Bumper on 2004 2007 Toyota Sienna

if you dont have the keypad to shut the alarm off, or put the key in the door first and unlock the car, then you are going to have to get the alarm disconnected

Can be issue with the switch.
Help links are provided below for detailed procedure,Click the link below:---
Front Door dis-assembly diagram for Toyota car?

http://repairhelpcenter.blogspot.in/2012/02/front-door-dis-assembly-diagram-for.html

------
Rear Door dis-assembly diagram for Toyota car?

http://repairhelpcenter.blogspot.in/2012/02/rear-door-dis-assembly-diagram-for.html

-------
How to test Power door locks? http://repairhelpcenter.blogspot.in/2012/02/how-to-test-power-door-locks.html

----------
right side slide door light switch on Toyota Sienna? http://repairhelpcenter.blogspot.com/2012/01/details-for-replacing-right-side-slide.html

------------
Door locks not working? http://technoanswers.blogspot.com/2012/01/door-locks-not-working-on-ford-explorer.html

--------------
Power door locks not working? http://schematicsdiagram.blogspot.com/2011/12/power-door-locks-not-working.html

--------

Repairing car Door lock Actuator?
http://howtobyme.blogspot.com/2011/11/repairing-car-door-lock-actuator.html

How to Access car door panel?
http://howtobyme.blogspot.com/2011/11/how-to-access-car-door-panel.html

Vehicle door panel components?
http://howtobyme.blogspot.com/2011/11/vehicle-door-panel-components.html

----------
This will help.
Thanks.

Black wires are almost always ground.

could be a fuse burned out, if thats good look to the switch or wiring