2010 Mountaineer ac/heater blows on high and wont shut off

Asked by May 17, 2017 at 01:40 PM about the 2010 Mercury Mountaineer Premier AWD

Question type: Maintenance & Repair

Hello I have a 2010 Mountaineer Premier model and the fan for the ac/heater won't shut off or turn down. It blows full force even when I shut off the ac/heater button. Someone disconnected the plug that's located on the passengers side by the glove compartment because I just couldn't stand the consistent loud noise. Any idea on what it could be and how to repair it without going to the dealer?  Thanks.  

2 Answers


Your blower motor resistor needs to be replaced. You should be able to do it yourself.

1 of 1 people found this helpful.

Ok thank you for your answer. Going to see if I can find a video of the repair as I'm not a car gal but willing to try.

Your Answer

Mercury Mountaineer Experts

  • #1
    Tom Demyan
  • #2
  • #3
View All

Related Models For Sale

Used Ford Explorer
45 Great Deals out of 1,629 listings starting at $4,500
Used Ford Expedition
10 Great Deals out of 353 listings starting at $5,490
Used Chevrolet Tahoe
5 Great Deals out of 912 listings starting at $9,871
Used Jeep Grand Cherokee
150 Great Deals out of 4,034 listings starting at $2,400
Used Lincoln Navigator
87 listings starting at $7,980
Used Ford F-150
536 Great Deals out of 9,929 listings starting at $3,490
Used Dodge Durango
97 Great Deals out of 1,036 listings starting at $4,495
Used Ford Escape
174 Great Deals out of 5,054 listings starting at $1,777
Used GMC Acadia
17 Great Deals out of 2,279 listings starting at $4,950
Used Nissan Pathfinder
12 Great Deals out of 1,371 listings starting at $3,888
Used Cadillac Escalade
5 Great Deals out of 508 listings starting at $4,980
Used Honda Pilot
7 Great Deals out of 626 listings starting at $3,490
Used GMC Yukon
3 Great Deals out of 1,106 listings starting at $6,950

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.