How do you change fuel pump of citroen Picasso xsara?

To change the fuel pump on a Citroën Picasso Xsara, first, ensure that the vehicle is safely lifted and secured. Disconnect the battery, then remove the rear seat and access the fuel pump cover. Detach the fuel lines and electrical connectors from the pump, unscrew the retaining ring, and carefully lift out the old pump. Install the new pump by reversing the steps, ensuring all connections are secure before reconnecting the battery and testing the system.