How to fix Jeep Liberty blower motor (resistor) – with pictures

I have a 2004 Jeep Liberty and the blower motor fan for the heat and air conditioning over time has gotten weaker and weaker to the point of setting number one not even working anymore. Over time, settings 1-3 will stop working and only 4 will work. Thanks to comments from Slav below, this is due to the full fan setting bypassing the resistor. I did some internet searching and found that this is a very common problem, but I couldn’t find very good instructions. Yes, there were step-by-step guides, but none answered all my questions. Here is my own attempt at helping you to make this job easy. (Click on any image for a larger resolution version.)

I had the dealership look up the part number — for my 2004 Liberty it is 5139719AA, although it is best to have them check fresh if you are going to tackle this project. If you decide you want to assume I’m right, here it is on Amazon.com.

Here are the tools I used: 2 small flat head screwdrivers, 8MM or 5/16″ socket (1/4″ drive), 1/4″ drive ratchet, 1/4″ drive long extension or a 1/4″ socket driver,  flashlight; optional & preferable: this looks like it would be the perfect tool for this job, a 1/4″ universal joint adapter.

 

Before starting, forums that I read insisted that you remove the negative wire from the battery to prevent airbag deployment. I was skeptical of this, but to nervous to risk it. Just do it.

1. Empty and remove the glove box. This is actually really simple. Open the door until it won’t open anymore. Look on the left and right for this large clip:

Push the clips toward each other and open the glovebox further:

Once you open the glovebox far enough, you can slide the whole thing to the right and remove it:

(I didn’t figure this out until I was done, so my subsequent pictures won’t reflect removing the glovebox door.)

2. Some might say to remove the wiring harness now, but I had a lot of trouble with that, so I took the resistor out, then worked on removing the wiring harness. This is when I first used my socket driver to remove the top screw:

3. For the bottom screw, I tried using my socket driver, but it was too much of an angle to bite:

This is where you can use a flexible or universal tool or a ratchet, like I did:

Thankfully I was able to hold on to the screws. If you drop one, I’m not sure how hard it is to get back.

4. Then I pulled the resistor out:

5. It took me a long time to figure this out: you must pull out the red clip lock in order to allow the black lever to release the wiring harness. Prying the red lock didn’t work, so I ended up needing to use a small screwdriver to push up on the little locking piece in the back:

Here’s what it looked like when it released:


At that point, push down on the black lever to release the wiring harness:

6. The rest is just going in reverse now, you can either put the harness on now or later; I chose now so I could see what I was doing.

Here is the old resistor. It has either worn out or made with very poor quality control:

PLEASE comment if there is a better way to do something that I didn’t figure out!! Also, let me know if this was helpful.

 

 

165 replies
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  1. adam says:

    Looks simple enough but I don’t see one of those anywhere online for a 2011 Liberty. Is the part a lot more at the dealership?

  2. Heather Jenkins says:

    That was awesome. Well done. Loved the format, too. Incredibly helpful. Many thanks.

  3. John in CT says:

    Just replaced the fan blower resistor in my 2004 Jeep Liberty using this post. Well done … thank you very much.

    My 2 cents: it took my about 15 seconds to open the glove box door all the way, slide to the right, and remove the entire glovebox unit.
    Just like this post, the top screw was very easy to remove using a 5/16 socket; however for the lower screw the socket driver can’t quite get a full grip on the screw. I partially removed the plastic under tray by removing 2 screws and bending it down far enough to get a socket wrench (and my hand) in. Still the socket wrench wouldn’t fit – my 3/8″ drive was just too big but I think a 1/4″ drive would fit ok, as Brian’s post. I went back to the socket driver and kept at it … eventually the lower screw came out too.
    Was a little difficult to pull the resistor out and twist it around. I had to monkey with the lock clip a bit but by pushing on the black tab, from the opposite side from that shown in Brian’s post step 5, was able to pop off the old resistor.
    Putting the new resistor (cost was $14.20 at my local Jeep dealer) back in was pretty easy.
    The whole job took me about 30 minutes, and would have been maybe 10 minutes faster if I had just read Brian’s post a little more carefully before diving in to the job.
    Anyway thanks again for the fine post.

  4. yvon boucher says:

    thanks saved money did it my self thanks for the help was easy part was $20 total toke 15 min.

  5. Ron says:

    Man! God bless you for posting this site. Just fixed my problem. Only real problem was getting the resistor off the harness. I’m no grease monkey, but I feel awesome for getting this done so cheap. Thanks again!!!

  6. Bill says:

    Great instructions especially on removing the glove box door. My old resistor was only working in high speed only. Best to remove and install plug with resistor removed from the installed location. 8mm is the size of the socket for the plug screws. I did drop one screw (which I rarely do) and a 7mm socket on the two screw removes the bottom air vent tray where the dropped screw will land. Watch out for that lamp down there since it will be hot.

  7. Amy says:

    Super awesome instructions!!!!!! And thanks Bill, dropped BOTH SCREWS, but easy to retrieve!!!!!!! :)

  8. Mike Gillis says:

    Thank you so much for posting this! It was incredibly helpful and you’ve allowed me to fix my wife’s car and make her very happy! It was perfectly explained and much appreciated!

  9. Steve says:

    I can’t tell you how much trouble you saved me troubleshooting my problem. Great pictures and great instructions! I thought I was in for a complicated expensive fix! My wife is happy and so am I. Thanks again!

  10. Rick says:

    Found this post looking for pictures behind the glovebox – you unwittingly answered a question for me and thought I would point out to you. I was looking for a pic of the cabin air recirculation screen – you can see yours in the top right corner of the photo for step #2, and it looks 100% clogged and filthy in your photo. Wondering how your air flow is on recirculate. Thanks for the post!

  11. john vazquez says:

    today july 30,2014 Puerto Rico
    I just finish to put the new resistor and its was very easy really I had never did nothing like this my first time ,thanks for the information and the pictures ,helps a lot thank you again ,great work

  12. Jan says:

    Does anyone know the approx. cost to have this fixed at an auto shop? I am not a mechanic at all but am experiencing this problem in my 2007 Jeep Liberty.

  13. Richard Schwertle says:

    One thing that I had to do was dremel the plastic down in the glove box to get a straight angle angle at the lower screw. No problem then

  14. Wayne Thompson says:

    Just had to say THANK YOU ! 15 Mins and one or two swear words and I have air and heat. What a great post. Now I have to fix the windshield fluid motor…. any posts on that ?
    Thanks again.

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