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F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
The sixth generation BMW 3 Series Sedan F30/F31/F34 and the first first generation 4 Series Coupe F32/F33/F36. Get the latest 3 and 4 series pricing from our ordering and pricing guide sticky thread.

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  #1  
Old 06-17-2017, 03:22 PM
CoupeGuy CoupeGuy is offline
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Location: Las Vegas
 
Join Date: Mar 2017
Posts: 85
Mein Auto: Glacier Silver 430i
Interesting result from window tinting

I just put some nice Wincos IR window tint on my 430i. Nano-ceramic film for maximum heat rejection here in the Vegas sun, and boy oh boy does it work well!

However, I opted not to put the heat rejection film on the front windshield. As a result all the heat comes in from the front, with the result that it is fooling the automatic AC settings. The car thinks it cooler (which it is) so the AC is barely running!

No big deal, I have to use manual type settings and increase the fan speed but I just thought it was interesting enough to pass it on.
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Old 06-17-2017, 03:54 PM
Hypermile Hypermile is offline
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Location: Toronto
 
Join Date: May 2017
Posts: 123
Mein Auto: 2017 328d xDrive Touring
I would think the opposite, since the sunload sensor is by the windshield, no?
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Old 06-18-2017, 01:14 AM
CoupeGuy CoupeGuy is offline
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Location: Las Vegas
 
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Mein Auto: Glacier Silver 430i
Quote:
Originally Posted by Hypermile View Post
I would think the opposite, since the sunload sensor is by the windshield, no?
This is interesting. From what I can see with a cursory Google search, there is an in-cabin temperature sensor in the dash panel as well as a sunload sensor in the top of the dashboard. I guess they work in tandem.

Judging by this, I guess the temp sensor is the boss.
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