Seat Arona Active Hood Fault

This sounds remarkably similar to an issue I encountered with my Arona some time ago. The "Active hood fault" message, coupled with the airbag warning light, strongly suggests a problem within the car's crash detection system. These systems rely on various sensors, including what you refer to as acceleration sensors, or sometimes called impact sensors, to determine the severity of a collision. The system fault you are experiencing likely stems from a faulty car sensor within this network. Have you checked the wiring and connections to the sensor? A loose or corroded connection can sometimes trigger false positives.

Thanks for your reply! You mentioned checking the wiring and connections. I'm not very experienced with car electronics, so could you be a bit more specific about where I should be looking for these connections? Is there a specific location where the impact sensor is usually located?

Indeed, the impact sensor is often located near the front of the vehicle, typically behind the bumper or near the headlights. However, given that the spring actuators have already been triggered, I would strongly advise against attempting any repairs yourself, particularly if you are not experienced with car electronics. The active hood system is linked to the airbag system, and any mishandling could potentially lead to unintended airbag deployment or further damage. A diagnostic check at a qualified workshop is the safest course of action. They can pinpoint the exact sensor that is causing the issue and ensure that the system is properly reset after the replacement.

Took it to the workshop, and you were spot on! It was the acceleration sensor. They replaced it, cleared the error codes, and everything seems to be working fine now. Total cost came to around 315€. Thanks a lot for your help, I really appreciate it!