RSQ3 HVAC Fan Failure: Common Blower Motor Problem Fix

I had a similar issue with my 2015 RS4, which shares many components with your RSQ3. I have some experience working on VAG cars, mainly doing basic maintenance and electrical troubleshooting. The symptoms you describe match exactly what happened to my car. The air flow completely stopped, and the climate control system showed errors. After checking the fan speed controller, it turned out the blower motor was indeed defective. Initially tried checking the electrical wiring and fuses, but the workshop confirmed the blower motor had failed. The repair involved replacing the entire blower motor assembly, which cost 365 Euro including labor. The fix restored proper air conditioning function and all fan speeds worked normally again. To help diagnose your specific case better, could you share: Are you getting any air flow at all, even at maximum settings? Did the problem start suddenly or gradually? Do you hear any unusual sounds when trying to operate the fan? Have you checked if the fuses are intact? This fault is relatively common in these motors, but its best to verify the exact cause before replacing parts.

Thanks for sharing your experience with the blower motor replacement. Last service was 2 months ago, and with my current mileage at 21448 KM, this is quite an unexpected issue. After checking your suggestions, I noticed a faint clicking sound when adjusting fan speeds through the climate control panel. The air flow completely stopped without warning during normal operation. All fuses appear intact after checking. The workshop quoted 420 Euro for a complete blower motor replacement. Quite steep, but if it resolves the HVAC system issues entirely, it might be worth it. Has anyone found a more cost-effective solution while ensuring proper air conditioning function?

After completing the blower motor replacement on my RS4, I can confirm it was the right decision despite the cost. The clicking sound you describe is exactly what I experienced, its typically a sign the motor is failing rather than an issue with the fan speed controller or electrical wiring. The 420 Euro quote is in line with current prices. My repair was slightly cheaper at 365 Euro about a year ago, but parts costs have increased. While its frustrating to have this failure at such low mileage, the cabin fan system in these models can sometimes fail prematurely regardless of use. One cost-saving suggestion I considered was using aftermarket parts, but I ultimately chose OEM to ensure proper air circulation and reliability. The air flow issues were completely resolved after the replacement, and the cabin fan has worked flawlessly since. Make sure the workshop checks the entire HVAC system during replacement. In my case, they found some debris in the air circulation pathways which they cleaned out while the system was apart, improving overall performance at no extra cost.

Thanks for the input. After considering the advice and comparing experiences, I decided to proceed with the OEM blower motor replacement. The clicking noise and complete loss of heater fan function match exactly with what others experienced, so it makes sense to address it properly rather than try cheaper alternatives that might not fully fix the HVAC system. I scheduled the repair for next week at 420 Euro. While its not cheap, having reliable climate control is worth the investment. The workshop confirmed they will inspect the entire air conditioning system during the repair, which gives some added value. Will update on the results after the repair is done. Really appreciate the detailed responses about the electrical wiring and component checks. Its helpful knowing others had similar issues resolved successfully with a blower motor replacement.