Infiniti FX AC Fan Issues: Common Fix & Solutions Needed

Hey there! I've got some experience with cars and had a super similar issue with my 2012 Infiniti QX70 diesel last summer. The symptoms were exactly like yours inconsistent airflow from the blower. Turned out it was just a loose cable connection in the control module. Took it to my regular workshop, Jim's Auto (been going there for years), and they sorted it out pretty quick. Cost me around 210 Euro to fix, including labor. They had to remove the control panel and reconnect/secure some cables that had worked themselves loose over time. Since then, my AC's been working perfectly! Quick question though have you noticed any strange noises when you try to adjust the fan speed? Also, what's your mileage like? These details might help figure out if you're dealing with the same thing I had. Hope this helps! Let me know if you need more info.

Thanks for sharing your experience! My mileage is at 90398 KM and I just had a service last month. Actually, yes I do hear a slight clicking sound when adjusting the fan speed, but it's pretty subtle. I wasn't sure if that was normal or not. Your experience with the loose cable issue sounds promising definitely less scary than having to replace the whole control module! Did your mechanic mention how common this issue is with Infinitis? I might take it to my local shop this weekend to have them check it out.

Hey again! Always happy to help out a fellow Infiniti owner! Yeah, that clicking sound you mentioned I had exactly the same thing with my QX70 before getting it fixed. When I had around 85,000 KM on mine, these symptoms started showing up. When I talked to Jim (my mechanic), he actually said it's pretty common in Infinitis from our era. He sees this issue maybe once every couple of months, usually in models between 2010-2013. The clicking is typically a good indicator that it's a connection issue rather than a full control module failure. Quick tip from my experience make sure to mention the clicking sound to your mechanic. That detail helped mine diagnose it faster. Also, while they're in there, have them check all the connections, not just the obvious loose ones. After my repair, Jim showed me that a couple other cables were starting to get loose too, so he secured those as preventive maintenance. By the way, since you just had service last month, did they mention anything about the AC system? Sometimes these issues start small and get worse over time, which sounds like what might be happening in your case, just like mine did. Keep us posted on what your mechanic finds! Always interested to hear how these things turn out.

Thanks so much for all the detailed info! No, the AC wasn't mentioned during my last service I wish I'd noticed the clicking sound then and brought it up. But it's really reassuring to hear this is a common issue and probably just needs some cable work rather than a complete replacement. I've just called my local shop and booked it in for Saturday morning. I'll definitely mention the clicking sound and what you shared about the cable connections that should help them diagnose it faster. Really appreciate you taking the time to share your experience. It's so helpful hearing from someone who's been through the exact same thing. I'll update here after I get it checked out this weekend. Thanks again!