Quote:
Originally Posted by Qsilver7
Yes, this is explained in the owners manual...no coding is required...its already doable. 
You can raise or lower the rear door’s shades as well as the rear window shade if your PRESS & HOLD the button on your master window switch that operates the rear window shade.
The trick though...all (3) shades MUST be in the same position. Which means if you have the rear window shade up...but the rear door shades are down...you’ll need to do a quick press of the button on the driver’s door to LOWER the rear window shade. Once it’s down, press & hold the same button and all 3 shades will raise up. To lower all 3 shades...you can press & hold that same button and all 3 will go down. If you only do a quick press of the button, then only the (1) larger rear window shade will go down.
So to recap:- 1 quick press of the button on the driver’s door will either raise or lower the larger rear window shade.
- press & hold the button on the driver’s door will raise or lower all 3 shades...but they must ALL be in the same position first...then they will raise and lower together.
EDIT: below is the info from the owners manual...admittedly its not real clear...but it does explain how to raise/lower the rear door window shades by pressing & holding the button on the driver’s door master window switch. Whereas each rear door has 3 buttons to control all 3 shades.
TIP: the bottom button on the rear door switch that operates the larger rear window shade...operates just like the driver’s door button...if you press & hold the rear door’s button...it too will operate all 3 shades together (if they are all in the same position)
{driver’s door master switch}
{rear door switch has 3 buttons to control each shade}
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Wow I just didn't think to look at the owners manual as I thought the car just didn't have it. In my other cars it would just be another click on that specific window switch to raise the sun shade. Interesting that the rear sun shade controls all of them at once.