Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Reset the Engine Control Unit of the Ford Focus

Model: Ford Focus MK 3 - Years 2011-2018
Part: Warning light – error code

In today's tutorial, you will learn how to reset the engine control unit of the Ford Focus by following the instructions below. First, open the bonnet of your car by pulling the lever inside; then use a 10 mm socket or spanner to loosen the nuts on the battery terminals (positive and negative) to disconnect it, as shown in the video. Keep the battery disconnected for a couple of minutes to reset the control unit; then reconnect it and finally start the engine!

Updated on 15 July 2026 by ScegliAuto

Video tutorial

Related tutorials

How to reset the ECU on a Ford Focus MK1
How to reset the ECU on a Ford Focus MK1
Ford Focus (1998-2004 / MK 1) In this brief guide, you will learn how to reset the control unit on a first-generation Ford Focus using the following instructions. First, open the …
How to Replace the ECU on the Ford Focus?
How to Replace the ECU on the Ford Focus?
Ford Focus (2011-2018 / MK 3) To replace the ECU on the Ford Focus, you may need to remove the engine from its housing: after disconnecting all hoses and connectors, the engine ca…
How to Replace the Airbag Control Unit on a Ford Focus?
How to Replace the Airbag Control Unit on a Ford Focus?
Ford Focus (2011-2018 / MK 3) To replace the airbag control unit on a Ford Focus, first remove the plastic protective cap located on the side of the centre console, near the glove…

Other guides you may be interested in

    Frequently Asked Questions

    • Focus 2004-2011 - How to find the radio code of the Ford Focus 6000 CD? Read answer

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.

Watch the video!


by ScegliAuto

More videos