I know there is a reason for this, but I'm not smart enough to figure it out, so I thought I would go to my friends of TW to find out.
Today, when I arrived at church in my 2010 DC, (with headlights on), I got out of the truck. After walking towards the church entrance I realized I left a CD in the Taco that I needed, the passenger side was closer so I opened up the passenger door, put key in ignition, turned to on, got CD out of player, locked up truck and went inside. Several minutes later, someone came up to me and said "you mean on that fancy new Toyota of yours, the lights won't go off automatically". I went outside and turned them off, thinking something was wrong. After my research this afternoon, I figured out that the passenger door opening or closing will not turn off the headlights, the driver door only does that. Does anyone know why this is, I'm sure there is a good reason, I just can't figure it out. Thanks for your help.