Seat Leon Active Hood Fault

I had a similar issue on my Leon, though it was a different engine variant. The active hood fault triggered the airbag warning light as well. It sounds like the system is behaving exactly as designed when it detects a potential collision. Have you checked the impact sensor readings using VCDS or a similar diagnostic tool? What fault codes are you seeing?

I appreciate the quick reply. When you say impact sensor readings, do you mean specifically the acceleration sensor for the active hood system? I have the error codes pulled, and it points towards that sensor, but I wanted to be certain before replacing it. Is there any specific data I should be looking for?

Yes, I am referring to the acceleration sensor specifically for the active hood system. The error code pointing to that sensor is a strong indicator. In my case, the sensor was reporting implausible values even when the vehicle was stationary. Since the actuators have already been triggered, you likely need a replacement sensor and a recalibration of the system. I recommend taking it to a workshop; they will be able to confirm the fault and replace the sensor.

Thank you for your input. I took it to the workshop, and after diagnosing the issue, they confirmed the acceleration sensor was indeed defective. Replacement and recalibration cost 315€, and the error is now resolved. Much appreciated.