2003 bmw 325i, the air is working, but two of the vents are blowing hot air. the other two are fine. what could it be?

Asked by Aug 10, 2012 at 07:00 AM about the 2003 BMW 3 Series 325i

Question type: Maintenance & Repair

we took it to a local shop and the free-on level was fine.

5 Answers

217,495

Apparently they didn't look for a vacuum leak or check the blend doors.

2 out of 2 people think this is helpful.

what are blend doors? sorry i have no knowledge when it comes to cars.

217,495

Make sure your center vent dial is set on the blue dots for cold air. I know it seems obvious, but lots of people overlook this simple function on the E46 and other similar BMW cars since the settings are not electronically indicated on the Climate Control Read Out Display. In fact, you can have your Climate Control set to blow cold air (or even hot air during the winter months), but the setting on this dial takes precedence and the air coming out the vents WILL ALWAYS match what the dial is set on whether it be red dots to blow hot air or blue dots to blow cool air.

4 out of 4 people think this is helpful.
4,245

Tom is correct check you stratification wheel and make sure it is on the blue dots. If thats ok and your a/c system is full of freon then you should check you water valve. This vehicle does not use a mixer flap in the air box to control the temperature it uses a water valve on the driver side near the air box, If that valve is stuck open then you will have heat coming in the passenger compartment even when the a/c is on. Hope this helps.

4 out of 4 people think this is helpful.
10

I have the same problem. The center vents are putting hot air after a while? Is there a temp sensor/thermal stat some where that may not working properly? HELP!!!!

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

3 Series

Looking for a Used 3 Series in your area?

CarGurus has 38,996 nationwide 3 Series listings starting at $1,495.

ZIP:

Search BMW 3 Series Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

BMW 3 Series Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,160
#2 Robert Charlson
Robert Charlson
Reputation 1,420
#3 Matt Mankinen
Matt Mankinen
Reputation 1,130
View All

Related Models For Sale

Used BMW 5 Series
633 Great Deals out of 15,516 listings starting at $2,495
Used BMW M3
83 Great Deals out of 2,086 listings starting at $2,650
Used Mercedes-Benz C-Class
669 Great Deals out of 32,359 listings starting at $1,990
Used Audi A4
326 Great Deals out of 12,116 listings starting at $950
Used Ford Mustang
564 Great Deals out of 43,003 listings starting at $1,699
Used BMW X5
510 Great Deals out of 15,565 listings starting at $2,500
Used Mercedes-Benz E-Class
371 Great Deals out of 22,691 listings starting at $1,450
Used BMW 7 Series
184 Great Deals out of 5,736 listings starting at $3,299
Used Honda Accord
1,009 Great Deals out of 75,623 listings starting at $899
Used Chevrolet Camaro
432 Great Deals out of 40,831 listings starting at $3,500
Used BMW 6 Series
126 Great Deals out of 3,290 listings starting at $7,988
Used BMW 1 Series
108 Great Deals out of 1,824 listings starting at $6,800
Used BMW X3
303 Great Deals out of 12,813 listings starting at $3,776

Used Cars For Sale

2017 BMW 3 Series For Sale
4 Great Deals out of 7,765 listings starting at $29,995
2016 BMW 3 Series For Sale
171 Great Deals out of 5,606 listings starting at $22,000
2015 BMW 3 Series For Sale
30 Great Deals out of 927 listings starting at $17,371
2014 BMW 3 Series For Sale
203 Great Deals out of 3,379 listings starting at $13,799
2013 BMW 3 Series For Sale
350 Great Deals out of 5,309 listings starting at $11,950