The good news is you can do it yourself as i explained to the car owner.
Here is how:
With the ignition off.
Press and Hold the trip meter button,
keep held in and turn ignition to position 1 this is the first click the one before the ignition lights come on
Keep the button pressed in for about 5 seconds until you see “Oil Service” or “Inspection” with “Reset” or “Re” in the display.
(On vehicles with “High” cluster, you will also see the amount of fuel in litres remaining until next service).
Quikly release and Press the button again now hold for a further 5 seconds or until “Reset” or “Re” flashes.
While this display is flashing,quickly release and press the button again to reset the Service Interval.
After the display has shown the new service interval you should see END SIA” for about 2 secs.
Please note this procedure should only be used after you car has been serviced and i would qeustion any company who is unable to reset the
service/oil light either using diagnostic equipment or using this method after they have have serviced a vehicle.
How to Reset the Service Light Citroen Xsara Picasso
Recently I have had a few requests for Citroen Xsara Picasso Service Light Reset information from people who service their own vehicles.
Being a mobile mechanic and auto diagnostic specialist I could use the stock answer and say “I’ll have to plug it in for you”.
As you have no doubt seen through my other posts I do not believe in making things difficult for the home mechanic.
Here is the procedure:
Sit in drivers seat ignition off and handbrake applied.
Press and hold trip reset button.
Turn key to position two (ignition lights on engine not started).
Keeping the trip reset button pressed in you will notice your trip meter counting down.
When zero (0) is reached start the car and the service light (spanner symbol) should now be extinguished.
Please only use this information after your vehicle has been serviced
Try This
Press and hold the trip reset button.
Turn on the ignition while still holding the trip reset button you will hear the normal beeping noise.
Hold trip reset button until the service tool (little spanner) disappears and 3 dashes appear (- – -).
You can now release the button and the service interval/oil change light is reset
1985-1991
Turn the ignition to run (one position before starting engine).
Press and release the SERVICE REMINDER button until the desired item is displayed.
When the desired item is displayed, do not release SERVICE REMINDER button.
After button has been pressed for approximately 10 seconds, the service interval mileage display will begin to count down in 500 mile/km intervals.
When desired service interval mileage is reached, release button.
Turn the ignition off and then start the engine to verify the indicator has been reset.
1997-1999
Manual Reset:
Turn key in steering lock to position 2.
Within 4 seconds press button (1) left of speedometer twice.
The present status for days or distance displays, within 10 seconds turn key in steering lock to position O.
Press and hold button (1), while turning key in steering lock to position 2 again. The present status for days or distance displays once more.
Continue to hold button (1) for approximately 10 seconds until a signal sounds and the display shows 10 000 mils or 15 000km. Release button (1).
2000-2002
Manual Reset:
Switch ignition on and immediately press knob to left of speedometer twice within 4 seconds.
Present status for days or distance is now displayed. Within 10 seconds, turn key in steering wheel lock to position 0.
Press and hold button to the left of speedometer, while turning key in steering lock to position 2 again. The present status for days or distance is displayed again. Continue to hold button until you hear a signal (approximately 10 seconds).
Release button.
Service interval displays the reset interval.
2003
Turn on the ignition (standard display of the control system appears).
Press button (UP arrow) or (DOWN arrow) on the multifunction steering wheel until the FSS indicator with (Single Wrench) or (Double Wrench) and the service deadline appears in the multifunction display.
Press the reset knob for about 4 seconds. This message appears in the tachometer: “DO YOU WANT TO RESET SERVICE INTERVAL? CONFIRM BY USING RESET BUTTON”.
To confirm hold down the reset button until you hear a signal. The service indicator now displays the reset interval.
2004
Turn on the ignition (standard display of the control system appears).
Press button (UP arrow) or (DOWN arrow) on the multifunction steering wheel until the FSS indicator with (Single Wrench) or (Double Wrench) and the service deadline appears in the multifunction display.
Press the reset knob for about 4 seconds. This message appears in the tachometer: “SERVICE INTERVAL…RESET: R-BUTTON 3 SEC.”
To confirm hold down the reset button until you hear a signal. The service indicator now displays the reset interval.