hi Donna, i had this problem with a customer last week. in my case it was the dash locking button that was sticking. try repeatedly tapping the button(on the dash) to loosen it up or dislodge any dust build up. failing this try removing the battery cables, touch the + and - cables together to dissipate any charge in the system then reconnect. failing that in the passenger side fuse panel, press the clip to allow panel to drop down. there are 3 big connectors plugged in. on the middle plug slide the red retainer clip out and unplug the lead.plug back in and close retainer clip, Tthis will reset the control modual. NOTE AFTER DOING THIS THE ENGINE MALFUNCTION LIGHT WILL ILLUMINATE. YOU WILL NEED TO RESET IT WITH A CODE READER. IF ALL FAILS ITS AN EXPENSIVE TRIP TO CITROEN IM AFRAID.
liam
November 2009