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How to Reset a Vehicle's ECUs Without a Scanner

Model: (Various brands) Various
Part: Warning light – error code

In this video, learn how to reset a vehicle's ECUs without the aid of a scanner. You will only need a key to disconnect the positive and negative terminals of the battery. The concept is that without power, the ECUs will lose their memory, erasing everything stored. Now take the battery charger, connect one of the poles to the negative terminal, ensuring it does not touch the battery in any way, and the other to the positive terminal (again, wrap the pole with a cloth so it does not touch the battery). Now leave the vehicle to rest like this for about 30 minutes, or longer if you are not in a hurry. When you reconnect, all codes will have disappeared.

Updated on 23 August 2026 by ScegliAuto

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How to Open the Bonnet of a Renault Megane if the Lever is Broken?

If the lever that unlocks the bonnet of the Renault Megane is broken or not functioning, there is an emergency procedure to unlock the mechanism: remove the right front grille located at the top of the bumper. Once the grille is removed, you can locate the actuator mechanism: by pulling the spring in this position, you can unlock the actuator, allowing you to lift the bonnet and access the components located inside the engine compartment. You can then close the bonnet simply by lowering it.

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by ScegliAuto

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