Dead HVAC Blower Haunts VW Jetta Hybrid Owner

Having experienced a similar cabin fan failure on my 2016 VW Passat GTE Hybrid, I can confirm this is a common HVAC system issue. The symptoms match exactly, fan speed controller unresponsive despite working display panel. In my case, it turned out the blower motor resistor had failed, not the entire motor unit. The diagnosis revealed the electrical wiring was intact, but the fan speed controller module had burned out. This prevented proper air circulation at all settings. The repair itself is moderately complex since accessing the blower motor assembly requires partial dashboard removal. Main components that typically need inspection include: Blower motor resistor, Fan speed controller module, Related electrical wiring harness, Fuse box connections While not the most serious mechanical issue, proper diagnosis is crucial as similar symptoms can stem from different root causes. A proper repair shop should test the entire circuit before replacing parts. The repair time typically requires 2-3 hours of labor for experienced technicians. If caught early, this issue can be resolved before causing damage to other HVAC components.

Thanks for sharing your experience with the blower motor resistor replacement. You described exactly what I am dealing with, no air flow despite the climate control panel working normally. Definitely helps knowing what parts to check. Did you remember roughly what the total repair cost came to? Also curious if you have had any other HVAC system issues since getting it fixed? My concern is that once the heater fan starts having problems, other components might be affected too.

Glad I could help identify the blower motor issue. After taking the car to the mechanic last week, the air circulation problem was fully resolved. The total repair came to 365€, which included replacing the defective blower motor and labor costs. The air conditioning and cabin fan have been working flawlessly since the repair. No other HVAC components were affected, the electrical wiring and control module were tested and found to be in good condition. The original problem was isolated to just the blower motor itself. Based on my experience over the past 6 months post-repair, you shouldnt worry about cascading issues. Once the faulty blower motor is replaced, the system should function normally again. The fan now responds properly at all speeds and air flow is back to factory specifications. My suggestion would be to get it fixed soon to avoid driving without proper ventilation. A well-functioning HVAC system is essential for both comfort and safety due to windshield defrosting needs.

I finally got the heater fan issue resolved with my Jetta. After taking it to a trusted mechanic, they diagnosed a burnt-out blower motor resistor, just as suggested here. The electrical wiring checked out fine, but the fan speed controller needed complete replacement. Total repair cost came to 390€ including parts and labor. The climate control system is now working perfectly, all fan speeds respond normally and cabin air flow is back to normal. The whole repair took about 2.5 hours. Really glad I asked here first instead of going with the initial shop that wanted to replace the entire HVAC unit. Saved quite a bit of money by getting a second opinion and targeting just the faulty blower motor components. For anyone else facing similar symptoms, definitely have the resistor and fan speed controller checked before assuming the worst. A proper diagnosis makes all the difference with these electrical issues.