How do you turn off the service spanner on a berlingo?

To turn off the service spanner light on a Citroën Berlingo, you typically need to reset the service indicator through the vehicle's dashboard. Turn the ignition on without starting the engine, then press the trip reset button until the service spanner icon starts flashing. Finally, keep holding the button until the icon goes off, indicating that the reset is complete. If the light persists, consult the vehicle's manual or a professional for further assistance.