Help with Citroen tech problem (also posted in French Bred)

[The daddy]

Hi - posted a topic a while back about resetting the "arrange service" light on a Picasso.
Short story - took car for a service and a few weeks later the service spanner and "arrange service" (on starting up) came on. Took it back to the garage as advised by Phers and discovered that they couldn't reset it. Mechanic persuaded me that it was "only a spanner" and not worth bothering about.

So comming to sell the car this weekend I took it back to citroen for some recall work on the suspension and asked for them to reset the light (£25!!!!!) They said that they Cannot do it!!!! Asked why and was told that they would be a fault on the Display panel (£508 +VAT + Fitting) - went to scrapyard and got one for £65. No difference. Obviously this could have the same fault but (i think) unlikely.
So then a couple of questions:-
1/ If there is a fault somewhere I expect it to be computer based - where is this and is it possible to swap for a scrapyard one without causing a whole host of problems?
2/ Anybody any ideas on further investigation.
3/ Why don't Citroen tell the truth?


Help me please..............

[That Daddy]

I have never had problems resetting these lights(garage charged you £25,jeeesh)what year is your Picasso?

[Deltaf01]

Someone dosent know how to use the scan tool properly.... go to a different garage for better technical help id say.

[The daddy]

Thinking about that!!! picasso 2001

[That Daddy]

Dont need a scan tool for that one,its just a combo of the display buttons to re/set service indicator.