05 - 09 Mustang Defrost Door Actuator Replacement, Car Stuck on Defrost 

MANY THANKS for the suggestion to remove the airbag! Did the job start to finish this afternoon. Works like new! For anyone who's confused about these actuators, the driver side module behind the instrument cluster is the Main Panel-Floor actuator. The upper module on the passenger side is the Main Defrost actuator. The lower module on the passenger side is the Temperature Blend actuator, and the horizontal module all the way on the right is the Air Inlet actuator. In my 2008 V6 base, the part number stamped on the original 2007-dated Defrost actuator was 6R33-19E616-BA. The new MotorCraft part is 6R3Z19E616-B. The package also says YH-1870. This is the same module that's used on the driver side for Panel-Floor. I bought mine today from a Ford dealer because of all the bad reviews on aftermarket units. Cost was about $40. It's installed now, and the clicking is gone. I opened up the old module, and two teeth were broken off one of the gears. THANKS AGAIN!

Thank you so much sir I just replaced mine in about an hour, only thing I didn’t do was pull the fuses the removal of the air bag made all the difference in the world!!! Thank you again for the guidance! I owe ya one...

Thank you So Much...I put this project off for 2 years ...ran across your video and now my problem is fixed

Thanks for the video. For anyone preparing to do this, believe the comments about removing the airbag. I couldn’t get it done without doing so.

lol it was day time when he started

Just fixed my AC with all these useful tips. Thanks!!!!!!!

Thanks for this video. Funny, my 2008 defrost door actuator clicks for a few seconds when the controls are turned to Defrost, but everything works. Hot and cold temp, floor air, panel air, defrost air, everything like it should be. Guess that won't last long, huh? I can't even touch the upper actuator screw through the glove box opening. I was thinking the airbag might give access, now I know!

Fixed my mustang using this guide, thank you so much man 🤘🏽

After removing the actuator from the passenger side the air won’t blow from the vents. The reason why I replaced it was because it made a clicking sound when moving the defrost. It’s working but it’s only working for the defrost…I installed back the old one and same thing, no air out of the vents just the defrost. Would anyone know what happened or how to solve this

Good instructions!! Installed 3 different time because the arm relocated to the previous position. Hopefully pulling fuses will help me. I had nightmares with this damn thing, big hands little space, upside down on floor, two years later. Round 2, here we go....

Hey brother! Your video was beyond helpful so thank you! I do have a question though. I replaced the same actuator but now my car is stuck in defrost mode. Any ideas how to fix that?

Thank you! This fixed my car as well!!

To remove the grey clip easily, press on the bottom back while pulling on it.

Really great and detailed video however im in florida and dont need defrost and i struggled just to get the actuator off in miami sun. I took it off by removing glove compartment then reached in to pull the level manually which is like a flapper. I flipped it to the front now ac blowing through front vents. Is it the right way, Nope did it solve the issue of air blowing out front vents...absoutely. Again, i dont need defrost in florida so all is good...thanks for the video.

damn thats a whole lotta work. lol i did not have to do all that but hey what works works!

What about if the defrost won’t activate at all? Everything on mine works except for the defrost and I definitely hear the infamous clicking

I replaced the actuator with the gear on it and the arms of the other 2 actuators move when I switch from defrost to ac but defrost still won’t close . Any thoughts ? I have an 06 mustang GT

The video was informative The video quality is literally terrible jumping all over the place I find this to be the case on most of the car videos they all need to go to videography school and learn how to make good quality videos.

good evening!!! I have a question. I have a 2006 Ford Mustang and some air comes out of the windows and part of it is pulled towards the front glass of the car, which may be damaged?

Hi, is it easier to see the actuator if you remove the airbag? I got my actuator out, but cannot seem to get the new one in cause I can't see to line up the arm on the actuator with the hole.

You don't have to pull any fuses, when you hook the battery back up it will automatically recalibrate the actuators.

Which actuator would i replace. If AC comes out colder on passenger side vents? My compressor is new, and freon levels are good as well. Anyone have a clue?

Awesome video. If you disconnect the battery why do you need to take the fuses out for 30 seconds.? I'm just curious cuz there's no power in the car anyway.

Like A San said. I did not have to do all that to replace that actuator. Took me 15 minutes to replace. Its accessible via the glove box alone.

Not sure what you changed but it did not look like the temp blend door. The mode door is on the other side and that is what controls were the air blows from.

Great video and I'll be tackling this soon. One other thing I may be doing is replacing the stock Shaker 500 with an aftermarket unit. When I have all that pulled out, would it make it any easier to replace the actuator or is that all blocked off from the stereo side?

Good video but removing the top cover where the airbag is unnecessary in my opinion cuz it still doesn't give you the right angle or view.

So my problem is that the defrost works, and the little tiny vents above the front vents work. But my front vents don't work at all. It sounds like the clicking is coming from behind the steering wheel. Do you think its the driver door actuator?

when i turn mine to defrost it blows air into the footwell? front vents and foot vents work fine but defrost is broken what actuator is that?

I did this and it still did not work. Do you think it is the one behind the instrument cluster?

Quick question. When you say you pulled the 3rd fuse. Is it the #3 fuse(wiper power/blower motor relay) or the #6 fuse(accessory delay feeds) which is third fuse on the bottom or is it the #17 fuse? Thanks for your help.

Ok so i changed this one and the one behind the instrument cluster. But It still did not fix it. SO i tried taking the actuator out all together and i tried moving the arm manually and the air still did not switch from the defrost vents. I did this with both actuators and nothing. What do you think the issue could be if it is not the actuators

i’m having the same problem with mine but i’m not sure which actuator motor it is. Because i know there is also one behind the instrument panel. There’s no clicking sound but the main vents don’t work only the floor vents and the defroster. Do you know which one it is?

Damn, you're in a big rush!

I never plan on using the heat only possibly the AC from time to time. If left alone can this lead to major issues or just more of an annoyance?

I'm so done with this fix, I've installed 1 actuator and it broke even after pulling the fuses. Got a replacement and same thing, installed, connected the battery, pulled the fuses, waited, reinstalled fuses, waited, turned car to ON (engine off), waited, tested the AC and still clicking. I'm afraid if I turn it to defrost it'll get stuck again. Got any tips? 08 mustang v6.

I've looked everywhere to find an install procedure for the defrost actuator on my 2014. I can see it from the glove compartment hole at the very top of the dash, much like this video. I had multiple people tell me that it is behind the guage cluster, but I don't think that is true for the '14. I can see the air inlet (recirc) actuator on the blower motor, the temp blend actuator on the left wall by the blower motor, the floor vent actuator right next to the temp blend on the left wall, and this defrost actuator at the very top of the wall, above the temp blend and floor vent actuators. I have a base model with manual controls. I believe the one they are talking about is for '05-'12, but am not sure because of the mixed answers. Does anybody happen to know if this procedure is the same on '14 Mustangs?

Which actuator do I replace if mine is not blowing any air at all but I hear ac compressor kick on I have replaced blower motor resistor

What can break if you don't do the reset part by removing fuses 10 and 12?

I was told I had a bad blend door so I bought one online. It didn't solve the problem because there are 3 of them. So I bought 2 more of the same part and it turns out the they didn't work right because they were slightly different(the stock ones). But my AC still worked fine(when on) but when off warm air would come in the through the vents. I lived with this for about a year but now my AC only works through the defrost vents like your video shows. I wanna order 3 proper blend doors and fix it properly but don't know what to buy.

Old video, but have you replaced the driver side one behind the gauges? Seems to be no guide out there for that one.

So did you pull the fuses just to install the new blend door actuator? Like when do I reinstall the single fuse you took out before you put in the new one ?

Are you supposed to turn the mode on a specific setting before replacing the actuator? Such as no air, defrost, etc? I used to have cold air and it went out by only blowing through the defrost. I replaced the actuator and it now blows normal again but it’s not as cold nor strong. The reason I feel like it’s not the compressor is because I turn on the heater and it as well doesn’t blow as hot and when I switch it to defrost it blows cold. Help please

When you pulled fuse 10 and 12 was that before or after connecting the battery?

Hi thanks for the video. I've installed a new actuator on the driver's side and the top actuator on the passenger's side since they were both clicking. I am getting ready to connect the battery but don't want to mess this up. You mentioned turning off environmental controls and pulling fuses 10 and 12. Do I need to pull any more fuses since I've replaced 2 of 4 actuators? Also just confirming the steps. 1. connect battery 2. pull fuses. 3. turn off controls for 30 seconds. 4. replace fuses. Does that sound right? Thanks again. Also had a trick for replacing the actuator on the drivers side without taking the car apart. I removed the easy bolt then broke out the old actuator made it so much easier to then remove the pain top bolt and replace with new actuator. I just used a screwdriver handle to prop up the air duct. It wasn't easy but easier than removing the dash.

Help me fix my mustang as well! Highly appreciated!!!

have no defrost, every thing else works, I need to replace the top-pass side like you did right??

my key fob won’t unlock my doors or lock or trunk will the actuator be the issue?

Just replaced mine but it’s still only coming out of the defrost

My bastardly ACTUATOR was top right...Unless you take out Pass. seat, glove compartment door, Air Bag, cut excess plastic to into bolt closest to you and you have hands of a 6 year old and weigh 135 lb.DO NOT attempt this freaking replacement of the noisy actuator..I almost set my car on fire I was so pissed!

Dude the auto place I took to said they didnt know which of the 3 actuators it was and that they had to test all 3 and wanted 200 bucks just for that. I have this same problem thanks

So after replacing the top actuator pulled the fuses and it’s still stuck in defrost. 🤷🏽‍♂️ only thing is I’m not exactly sure if I lined up the arm in the right place. Good god I can’t really see anything up there just going by feel.

I don’t have fuse 12 what do I do

How many actuators does a mustang have? I have a 2005 mustang

Hi, what part of Texas are you in? Can I pay you to do this?

My ac is stuck on my feet in a 2006 mustang

Too dark to see what you were doing. Too much crappy music as well.

Wow terrible tutorial. You can’t see anything.