Volvo S60/S80/V70/XC70/XC90 CCM Fan Button Repair

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Video about fixing your Climate Control Unit (CCM) fan button. It will also show how to clean the cabin temperature sensor and fan. The car used is XC90, removing the CCM is slightly different on other models but the fix is the same.
Here is photo of the resistors you should resolder as well:

[mcardlepm]

PHENOMENAL. My 2007 XC70 would only consistently allow auto fan control - any manual use was "iffy" (usually didn't work). I'd long suspected it was due to the then-new lead-free solder; it took awhile for manufacturers to get the alloy right and any heat cycling would crack the joints (XBox "red ring of death, " laptops etc.). I'd hoped to pop the board in my oven to re-flow everything but there was too much non-removable plastic. Used your method and it worked like a charm, in fact, the sketchy looking joints were on the (2) resistors (makes sense since resistors can get hot... careful - they slide when the solder melts!). I'd add the details about key position II and disconnecting/reconnecting the battery as in your other videos.

[kevincrosby]

Thanks for a very complete video! the fan knob on my 2005 XC90 became non-functional, so I had no manual control and had to run the system in auto mode. I was skeptical, but followed your instructions and the re-soldering did the job! Works like new!

[tymcflyy]

Thank you so much for this! Just fixed my wife’s S60 with this repair method. I was about to buy a used climate module off eBay until I found this.

[archiegella]

Thanks for sharing this idea. I did re-solder the chip contacts under the fan knob. It still did not work: every turn of fan knob, it still skips speed level. What worked for me is when I followed up by spraying wd-40 specialist silicone on both sides of the circuit board. I let it dry for about 90 minutes, and it worked. I did disconnect the battery first before I took out the AC control module. And no, I did not have the contact cleaner wd-40 at the time.

[gavin]

I replaced the entire board from a spare on eBay before watching this video. Could well have just been the bad solder joins 😢 excellent video, in sure it will help a lot of people!

[MrDomelS]

Thank you for showing us how to do it. I bought XC70 recently and could not figure out how to operate the fan manually. It turned out it was faulty fan knob. Followed your video and fixed it. Works like a charm! Thanks 👍👍

[sebo]

Many, many thanks for the advice, especially since it's hard to find replacement parts (in a distant country) for a 2005 car in 2024....

[cobratitu]

One more sub! If after almost 5 years can I fix one of the last pending I had, it will be a quick success!

[jc-kjon]

Another thing to maybe check if your having this problem is the coupler that leads to the blower fan, i was about to solder my switch and figured maybe i should test if the fans even getting the signal from the switch and the ground was arcing and melting the coupler for some reason. My guess is the kids blocked the vents and had the fan on full and the motor was possibly getting hot or it just wasn't a good contract. Anyway hope this helps anyone with this issue, maybe a proper diagnosis of the fan vids in order? I found this video to be the best and most detailed so i propose its from you 💪😌

[renezichaml.]

Hey man, it really works. Thanks a lot. Greetings from Czech Republic. Volvo v70 II 2005

[min-hoxi]

Thanks! Just did this repair on my S60 and it worked flawlessly

[alien_marksman]

Excellent timing of the video.
I have a 2003 S60 and the fan isn't turning off when I turn the ignition off and lock the car. It was suggested I resolder the CCM.
Now I can attempt this with some guidance, rather than going in blind.

[calvinvintage]

many years later....had to remove motor (twice) as something in the whole CCM setup isn't working - no fan. Been working my way through fuses, CCM, fan, fan controller resistor, air quality sensor...one thing to note is I have found it is possible to replace the air sensor when you have the fan out. This is worth doing because you should really use a wiper arm puller to remove the wiper arms to get to the sensor from above. If only changing the sensor, sure, this is way less hassle than removing the fan motor. Hella make an air quality sensor for at least half the Volvo stamped one. IMO it is worth replacing this sensor when fan is out because it sometimes messes with the CCM logic. Also replace the CCM bulbs while out, and CAREFULLY clean the cabin air temperature sensor and fan - do not break the wire. If you do, it is possible to obtain correct wire and solder a new one in (search YouTube), but avoid snapping in first place! I did resolder all the fan speed joints on the rear too. They will dry/break, so you might as well do that too while the whole dash is out!

[Kuroyuki]

very nice guide! I tried but failed nonetheless.
I don't know how to tell a "nice and clean" solder from a bad one. So that might be the problem.

[gusos]

Great tip! The solders on mine looked fine so I was sceptical that it would be that, saw that Kevin Crosby was also sceptical so I tried it and it now works perfectly again. If not for this video I would have bought a new pot. That would have fixed it too but with a lot more time for part shipping and effort with desoldering the old one and soldering the new one. Thanks!

[litvakil]

Tried to resolder. Worked well for couple drives, then stack. Looks like second resoldering killed the unit. The fan speed is working, but somehow I lost a heated seats :-(

[brianjaume]

gracias por el video, efectivamente a mi ahora funciona
1000

[jankristianiversenmagnusse]

Did the soldering, now fan stuck at 100%, do you have any knowledge about what could be the issue?

[scottm]

oh those seat covers look so cosy, might get myself a set for the winter!

[rafafarafafa]

I'm done solder under the knob button, but's the blower some time don't off after i off the engine, some time can't on the blower ...
So curious 😢, please help