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One way to solve the malfunction of the active hood of a Mercedes A-Class

Model: Mercedes Classe A W177 - Years 2018-2026
Part: Checks and maintenance

In this video we see a problem that often occurs on Mercedes cars: the malfunction of the "active hood" system, which is the pedestrian protection system that slightly raises the hood in case of impact, to cushion the blow with the pedestrian. The video shows us that the airbag control unit records two "open circuit" error codes for both the right and left lifting actuators. The mechanic then disconnects the actuators and connects a jumper directly to the wiring connectors that go to the control unit. If the control unit now reads 0 Ohms (short circuit), it means that the wiring is intact and the SRS control unit is functioning properly. The actuators are expensive to replace, and the solution shown is a bypass, but this intervention deactivates the pedestrian protection system, so in case of an accident, the hood will not lift to protect the pedestrian. The ethical and correct solution is to replace the faulty actuators with original ones to restore the full functionality of the safety system.

Posted on 26 August 2025 by ScegliAuto

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How to Connect the Cables to the Battery of the Citroen Xsara Picasso?

In this tutorial, you will see how to connect the cables to the battery of the Citroen Xsara Picasso, useful if you need to recharge it or perform an emergency start. First, ensure the key is not inserted, then open the bonnet and move to the front of the left headlamp. Next, locate the bolt just behind the filter box and connect the positive terminal clamp to it. Now you can connect the negative terminal to any point on the chassis, such as the indicated point. Once the operation is complete, ensure you disconnect the negative first and then the positive.

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by ScegliAuto

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