Active hood fault and airbag light on Mercedes EQC

An active hood fault with the airbag warning lamp suggests a problem within the car safety system, specifically the crash detection. The triggered spring actuators indicate the system believes an impact occurred, or is behaving as if it has. It could be a faulty impact sensor, or an issue within the active hood system itself. The acceleration sensor is a plausible culprit, however, without a proper diagnostic scan, it's hard to say for certain. Before assuming the sensor, has the car been involved in even a minor bump or jolt that could have triggered the system? Have you checked the wiring and connections to the hood actuators? While a defective sensor is possible, a wiring issue could also cause the problem. It seems unlikely both would fail simultaneously but, still, it's Mercedes and weirder things have happened. I'm not sure replacing the sensor will definitely fix this.

No bumps or jolts that I know of. I haven't checked the wiring myself, that sounds a bit beyond me. If it IS the acceleration sensor, is that a big deal to fix? I saw a repair cost of 315€ mentioned somewhere... is that realistic?

315€ sounds plausible if it's just the sensor and labor. The acceleration sensor is a critical component of the car safety system, so while replacing it might seem straightforward, it needs proper calibration and integration with the car's computer after replacement. If the spring actuators have deployed, they might need replacing as well, and that would definitely increase the cost. Because the active hood system ties into the airbag system, I strongly suggest taking it to a workshop with experience in Mercedes vehicles and their safety systems. A faulty repair could compromise the entire system in a real crash. It's better to be certain than sorry, especially when car safety is involved. I still think that it is difficult to say with any degree of certainty.

Thanks, I appreciate the advice! Took it to the dealer, and you were spot on – it was the acceleration sensor. Got it replaced for just under 320€. Annoying, but at least it's sorted and the safety system is back online.