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How to Bypass the Immobiliser Preventing a Ford Mondeo IV from Restarting

Model: Ford Mondeo / Fusion MK 4 - Years 2014-2021
Part: Checks and maintenance

In this video, you will learn how to resolve the immobiliser issue on a Ford Mondeo IV that has been activated due to a flat battery. Even when starting the vehicle with a booster, the immobiliser remains active. How can you bypass this problem? Remove the positive terminal using a 10 mm spanner, then remove the earth nut located on the right, sanding away the paint (factory applied) that causes increased resistance to the power going to the negative terminal at the back. The YouTuber can then conveniently recharge the battery overnight, but this is the method to bypass the immobiliser issue preventing the vehicle from restarting.

Updated on 1 August 2026 by ScegliAuto

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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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by ScegliAuto

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