How do you make dash light brighter in in xsara Picasso?

To make the dash lights brighter in a Citroën Xsara Picasso, locate the dashboard brightness control, typically found on the headlight switch or as a separate dial on the dashboard. Turn the control clockwise to increase the brightness. If your model has a specific button for adjusting the brightness, ensure it is pressed or turned to the desired level. If the lights remain dim, check for a blown fuse or consult the vehicle's manual for further troubleshooting.