I believe you're talking about a light with the shape of a spanner key. If so read how to below. If not please contact your usual workshop. It may not be so simple.
On the left side of the dash board are two buttons, before turning on the car key( dash board off), press (and hold) the upper one. Turn the key to on positon, hold it for 5 seconds and the light will start blinking.
After this first step, you should choose the interval till next wanrning.
Please remember this light is a warning of maintenance requirement, you have reached and overpassed the mileage till next maintenance. Be sure you already treated your car right ( oil change, filters, belts; all those things) that light isn't there just to be annoying to you.
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.
NO
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.
It's under the n/s front light.
Take the gearbox out and flip it round twice
The alternator needs attention or replace
This light is an engine management light and indicates a fault with the management system. It would be worth get a diagnostic tester connected up to the car to check for fault code(s) and rectify accordingly
T5 0.6w although 1.2w give a brighter light
use ignition key in passanger sideof the dash with door open to turn airbag on the light goes out
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.
This is the engine management warning light. It is supposed to look like the outline of a car engine! If it lights it means you have a fuel injection or ignition problem (or have had a problem recently - misfiring for instance).
It means the engine may be overheating.