Cold air always blows out defroster vents

Nissan 350z / Nissan 370z technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
apyork29
Posts: 1
Joined: Sat Sep 30, 2017 10:13 am
Car: 2004 Nissan 350z base

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Hello, I'm new to the forum and I'm having a minor issue with my 2004 350z.
My windshield defroster always blows air on the windshield no matter what my air setting is set on. It will change temperature between cold and warm but air is always coming out of the defroster even when the settings are on head or feet only. Most annoying when it's raining out and my windshield fogs up so I have to run the heat in my car when it's already hot out (in Florida so it's almost always hot). Thank you for any help!


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evildky
Posts: 14713
Joined: Sat Jan 31, 2004 9:23 pm
Car: 71 240ZT, 87 300ZXN/A-T, 06 350Z GT, Tundra TRD RW
Location: Louisville, KY
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Post

The doors to the hvac are electronic on these cars, most likely it's a actuator. The fsm details the diagnostic procedure.


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