Defrosting heat - E46Fanatics E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Go Back   E46Fanatics > E46 BMW > E46 Xi Forum

E46 Xi Forum
The E46 XI was produced from 01-05 in sedan and touring body styles. Powered by either a 2.5L inline 6 in the 325xi or a 3.0L inline 6 330xi. Discuss all thing about BMW AWD E46 'Xi' here.

Thread Tools Search this Thread Rate Thread Display Modes
Old 11-26-2011, 11:51 PM   #1
Registered User
Join Date: Aug 2011
Location: Milwaukee WI
Posts: 20
My Ride: 04 330 XI
Defrosting heat


On my 04 330XI when the temp is about 50 degree's outside. I turn on the defroster to clear the windows. It clears the window but this huge blast of heat comes out. How do I control the temp? I have it set on lowest temp 59 inside the car, is it because it is 50 outside that the defroster blasts heat? I turn on the a/c at the same time but the air is still very warm? What would anyone suggest?


davesalkin is offline   Reply With Quote
Old 11-26-2011, 11:55 PM   #2
Registered User
Join Date: Jan 2010
Location: Albany, NY
Posts: 533
My Ride: 2003 BMW 325xi
Defrost, by nature, is designed to melt frost and ice off the windscreen. If you want to defog without melting your contacts to your corneas, turn on the A/C and the "Up" vent and increase the fan until it starts to take care of the fog. This will run the air through the defroster vents with whatever temperature you have set, rather than the preset "Defrost" option.
2003 BMW 325xi
2010 BMW M3 Sedan
LittleChrist12 is offline   Reply With Quote
Old 11-27-2011, 06:54 PM   #3
Registered User
Join Date: Aug 2011
Location: Reading, Pennsylvania
Posts: 815
My Ride: 325xi, M3, 325e, 328
Year: 2004
Model: M3
Transmission: 6 speed manual
Send a message via Yahoo to tomoyer
For light fog, best to use the AC on the upper/windshield setting and adjust your temp and fan spend. Not only will it defog the windows, it will also pull moisture out of the car more so than on the defroster setting (though in defroster mode, the AC compressor does run, but temperature is harder to adjust so that it isn't too hot/warm.
tomoyer is offline   Reply With Quote
Sponsored Links
Old 12-03-2011, 03:49 AM   #4
Registered User
Join Date: Aug 2011
Location: Springfield, Mo
Posts: 62
My Ride: 2002 325xi
Originally Posted by davesalkin View Post

How do I control the temp?
You don't. If you're pushing the defrost button, the owners manual states that the car runs a defrost "program". It's going to be hot air. Follow the previous suggestions if you want it different.
steve108819 is offline   Reply With Quote
Old 12-03-2011, 10:02 PM   #5
Registered User
Join Date: Nov 2006
Location: Edmonton, Canada
Posts: 2,230
My Ride: 2003 325xi
Can you park the car in a garage? Anything damp in the car? You might also try wiping your windows with an anti fog coating.
I really never have fogged or frosted windows and it's cold here now.
xi_ter is offline   Reply With Quote
Old 12-05-2011, 01:26 AM   #6
Registered User
Join Date: Jun 2011
Location: Edmonton, Alberta
Posts: 278
My Ride: 2002 325i,2003 330ci
I don't mind the heat blast when the defroster turns on, but I'm not very fond of the defroster trying to crack my windshield everytime it turns on by putting the fan to full speed.
Viktimize is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON

All times are GMT -5. The time now is 05:15 PM.

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
(c) 1999 - VerticalScope Inc. All rights reserved.