S6 Climate Control Panel Dead, No Heat or AC Response

The symptoms you describe match what happened with my 2010 A6 3.0TFSI. The complete HVAC system shutdown was caused by failing electrical connectors in the main wiring harness behind the climate control panel. This is a known weak point where the power supply to the control module can develop issues. While the blower motor itself rarely fails completely, the electrical connections that control it can deteriorate over time. The fix required removing the center console to access and replace the damaged wiring harness section. This was a serious repair that needed specialized diagnostic equipment to properly identify the failing components. Simple voltage testing would not have revealed the intermittent connection issues. The problem got worse over time, started with occasional unresponsiveness, then progressed to complete system failure. Based on your symptoms, this likely requires professional diagnosis and repair. A qualified shop will need to: 1. Read the stored error codes 2. Test the electrical connectors and grounds 3. Inspect the wiring harness for damage 4. Verify power supply to all HVAC components Consider having this checked soon, as complete climate control failure can lead to safety issues with window fogging and passenger comfort.

Yes, I had exactly this issue. My air conditioning and heating system completely died, showing similar symptoms. The electronic faults turned out to be failing connections in the climate control wiring. The blower motor was actually fine. Has your problem been resolved? Would be helpful to know what repair costs you faced and if any other related issues came up since the fix. Mine was sorted about 8 months ago but it wasnt cheap, wondering how costs compare.

Since having the mechanic look at it, my climate control panel is working perfectly again. The electronic faults were traced to a faulty connection in the wiring, just as you suspected. The repair cost came to 95 Euro, which covered fixing the electrical connectors behind the control panel. The air conditioning and heating systems now function exactly as they should. No other related issues have surfaced in the months since the repair. The key was having a technician who knew exactly where to look for these common electrical connection problems rather than replacing parts unnecessarily. Sounds like you paid significantly more than I did, though repair costs can vary based on exactly which components needed attention. In my case, the quick diagnosis of the failing connections in the climate control wiring meant a relatively straightforward fix without needing to replace any major parts.

After reading about similar cases, I finally took my car to a specialized shop last week. The mechanic found the power supply connection to the climate control panel had deteriorated. The electronic faults were exactly as others described, failing connectors in the main harness. The repair took about 3 hours. They had to remove parts of the center console to access the wiring. Total cost was 380 Euro for diagnosis, labor and replacement of the damaged wiring section. The temperature sensor and other components were fine, just the electrical connections needed fixing. Since the repair, everything works perfectly. The control panel display is clear and responsive, and both heating and AC function normally. Looking back, I should have addressed this sooner rather than waiting and worrying about potentially bigger issues. At least the problem is resolved before winter really hits. While it wasnt the cheapest repair, having a properly working climate control system is worth it for safety and comfort. Much better than my previous disappointing mechanic experience.