VW Polo Climate Control Panel Dead, No Heat or AC

Had this exact issue on a 2013 VW Golf TDI with 98000km. The symptoms point strongly to electronic faults in the climate control system. The main culprit was a faulty connection between the blower motor and its power supply unit. The wiring harness had developed corrosion at one of the main connector points, causing intermittent power loss to both heating and air conditioning systems. Initial diagnosis showed similar symptoms, completely dead control panel with no response. A proper electrical diagnostic revealed the deteriorated connection was preventing proper communication between the control module and the blower motor assembly. The fix required: Cleaning the corroded connector pins, Replacing one section of the wiring harness, Testing the power supply to ensure proper voltage, Recalibrating the climate control module This is typically a serious issue that needs professional attention, as it involves the cars electrical system. DIY attempts can lead to further complications with the vehicles electronic control units. First step would be checking fuses and ensuring all visible connections are properly seated. But given the complete system failure, its likely a deeper electronic fault requiring specialized diagnostic equipment.

Thank you for sharing your Golf experience. My Polo had the same issue last winter, completely dead climate control and no response from the air conditioning system at all. The mechanic found it was the power supply unit that was causing all these electronic faults. Got it fixed eventually but wondering what repair costs were in your case? Since my repair, everything seems fine with the control panel but curious if you had any recurring issues with the climate control system?

Glad you got your Polo fixed. In my case, the repair was relatively straightforward and cost 95€ to fix a faulty electrical connector in the climate control system. The temperature sensor and control panel started working perfectly after the mechanic repaired the connection. The wiring harness itself was actually fine, just needed the connectors cleaned and properly reseated. No recurring issues since the repair, and its been working flawlessly for over a year now. The climate control maintains steady temperatures and all buttons respond correctly. If your system is working well now, it sounds like the mechanic properly diagnosed and fixed the root cause. These electrical connection problems are pretty common in VWs of our era but usually stay fixed once properly repaired.

Thanks everyone for the helpful replies. After dealing with the dead climate control panel for weeks, I finally took it to my regular mechanic. The total repair came to 280€ which included replacing the power supply unit and fixing some corroded wiring harness connections. The electronic faults were worse than expected, turned out the air conditioning control module had also failed. But the mechanic did a thorough job testing all the connections and now everything works perfectly. The heating responds instantly and the climate control panel lights up properly. Really relieved to have it sorted before summer. The whole repair took about 4 hours but worth every cent to have working air conditioning again. No issues at all since the fix three months ago.