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How to Install a Siren Alarm on a Mercedes C-Class W203

Model: Mercedes Classe C W203 - Years 2000-2007

In this short video, you will see how to install a small siren alarm on a Mercedes C-Class W203, third generation. First, connect the alarm system to the power supply; open the hood and connect the wires to the battery, as shown in the video. Next, connect the alarm to the power outlet (in this case, it is connected via the cigarette lighter, converted to a USB port); then check the alarm's operation by making the necessary adjustments (volume and duration).

Updated on 15 April 2026 by ScegliAuto

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How to Open a Stuck Boot on the Peugeot 407?

On the Peugeot 407, the boot may become stuck, possibly due to a problem with the control button or the lock actuator. In such cases, you can perform an emergency opening by following the simple procedure shown in this tutorial. First, open the rear doors, then lower the seat back by operating the release lever. Next, go inside the boot, locate the lock, and manually operate it using a flathead screwdriver. The boot will then be free to open.

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