# Cold in the way way back

**URL:** <https://community.cartalk.com/t/cold-in-the-way-way-back/89187>\
**Category:** Maintenance/Repairs\
**Tags:** sienna, toyota\
**Created:** [March 1, 2015, 11:26pm UTC](https://community.cartalk.com/t/cold-in-the-way-way-back/89187 "2015-03-01T23:26:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Toyota\_Ratsnest](https://avatars.discourse-cdn.com/v4/letter/t/f1d935/32.png) [@Toyota\_Ratsnest](https://community.cartalk.com/u/Toyota_Ratsnest)\
**Post date:** [March 1, 2015, 11:26pm UTC](https://community.cartalk.com/t/cold-in-the-way-way-back/89187/1 "2015-03-01T23:26:20Z")

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The rear vents in my '09 Toyota Sienna minivan do not blow heat, only cold. The vents up front work just fine, but when I turn on the rear heater (whether from the front controls or from the rear controls), my kids get iced. They never blow heat, even after long periods of time- sorry about that, kids. (Also, the upper vents in the back do not blow strong, even on High, although the lower one does). I heard something about an interior heat sensor, and about blend doors, but I need help on where to start looking. Thanks!

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**Author:** ![knfenimore](https://avatars.discourse-cdn.com/v4/letter/k/9fc348/32.png) [@knfenimore](https://community.cartalk.com/u/knfenimore)\
**Post date:** [March 1, 2015, 11:41pm UTC](https://community.cartalk.com/t/cold-in-the-way-way-back/89187/2 "2015-03-01T23:41:15Z")

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There is a water valve servo motor that may not be working.