Seat Formentor Air Conditioning Problem

The symptoms you describe strongly suggest an issue within the climate control system, specifically affecting air distribution to the rear passengers. It is plausible that a defective cable or plug connection to the rear ventilation flap is the root cause. Consider it analogous to a faulty wire in a household appliance; even a minor break can disrupt the entire circuit. Before condemning the flap motor itself, conduct thorough system diagnostics using appropriate diagnostic equipment to verify signal continuity and voltage levels at the connector. This will help isolate the fault and prevent unnecessary component replacement. Inspect the wiring harness for any signs of damage or corrosion. Has the diagnostic check provided any specific error codes related to the rear ventilation flap?

Thank you for the rapid response. The diagnostic check returned error code B10CD29. System diagnostics pointed towards the rear ventilation flap. What specific checks should I perform on the plug connection to verify its integrity beyond a visual inspection?

Error code B10CD29 does indeed point strongly to a problem in the rear air distribution flap circuit. Considering your question, beyond visual inspection, it is imperative to assess the connector's electrical integrity. Utilizing a multimeter, perform a voltage drop test across the connector while the system is active. Elevated voltage drop indicates increased resistance, potentially caused by corrosion or loose terminals. Furthermore, conduct a continuity test with the system powered down to verify the integrity of each wire within the connector. Agitate the wiring harness while performing these tests to expose any intermittent connection issues. Given the potential for complexity and the need for specialized tools, proceeding with caution is advisable. If these measures do not yield a definitive resolution, consulting a qualified workshop may be prudent to avoid unintended consequences. The estimated repair cost of 95€ seems reasonable assuming only a simple repair of the connector is required and not a full motor replacement.

Your insights were spot on! I examined the plug connection to the rear ventilation flap, and it was corroded. A thorough cleaning and application of contact spray resolved the issue. Air conditioning is now functioning correctly. The entire repair, including materials, amounted to 95€. Thank you for your assistance.