Step-by-step:
Citroen xsara Picasso dashboard light bulb is the bulb that's for the dashboard light climate control. The you tube web site gives you information as how to change the bulb.
The alternator needs attention or replace
the light tells you that you have passed its service interval
Yes. Its the amber warning light on the central display with a picture of a coil on it. It is only used on the diesel version of the car.
There is a switch behind the brake pedal. Fairly easy to replace, or a 10 minute job at a garage.
Service Light Reset - Citroen Xsara (1997 on) Using button located at the right hand side of the speedometer dial. Switch the ignition off. Press and hold button. Switch on the ignition. Keep the button depressed Service Interval and "spanner" symbol will illuminate for five seconds.
go to the boot, get at the back of the light and pop 1 of the clips out with a flat head screwdriver, then just line up the 4 bits when replacing!
NO
if is xsara picasso then: from inside move carpet on the left side, there you see two metal parts which need to be squeeze and all rear light come off. Then you take off plastic where are all bulbs in, brake, direction and reverse bulb
To reset the engine management light on a Citroen Picasso, press and hold the trip reset button. Turn ignition key to position 2. By keeping the button pressed in, the trip meter will count down. When zero is reached, release the trip button and the start car service light will be extinguished.
It's under the n/s front light.
Remove the fuse board cover at the right hand side of the steering wheel, the switch is located behind the mass of cables, a quarter turn to the left will allow the switch to be removed.