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How to Reset the BSI Unit of the Citroen C4 Picasso?

Model: Citroen C4 Picasso MK 2 - Years 2013-2022
Part: Control unit

The BSI is the main control unit of the vehicle, in this specific case, the Citroen C4 Picasso, responsible for managing all the essential functions to operate the car, such as engine power, lighting system, central locking, and more. You may need to reset it if you replace the power battery, as explained in the video. Here’s the procedure: turn on the instrument cluster and hold the Start and Stop button, turn off the cluster, release the aforementioned button, remove the key from the ignition, lock and unlock the central locking, and finally open the driver's door.

Posted on 9 February 2026 by ScegliAuto

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