# 2015 Nissan Rogue - why does AC come on when I use defrost?

**URL:** <https://community.cartalk.com/t/2015-nissan-rogue-why-does-ac-come-on-when-i-use-defrost/132001>\
**Category:** Maintenance/Repairs\
**Tags:** nissan, rogue\
**Created:** [January 5, 2019, 12:11am UTC](https://community.cartalk.com/t/2015-nissan-rogue-why-does-ac-come-on-when-i-use-defrost/132001 "2019-01-05T00:11:18Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kathy16](https://avatars.discourse-cdn.com/v4/letter/k/e9bcb4/32.png) [@kathy16](https://community.cartalk.com/u/kathy16)\
**Post date:** [January 5, 2019, 12:11am UTC](https://community.cartalk.com/t/2015-nissan-rogue-why-does-ac-come-on-when-i-use-defrost/132001/1 "2019-01-05T00:11:18Z")

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when I turn my heater to defrost and back …the ac comes on , this happens quite often, if I had the heat on more than a half hr it turns to ac

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [January 5, 2019, 12:49am UTC](https://community.cartalk.com/t/2015-nissan-rogue-why-does-ac-come-on-when-i-use-defrost/132001/2 "2019-01-05T00:49:44Z")

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When you turn the defrost on, the AC comes on automatically to clear the moisture out of the air. Completely normal operation.