at end of key there is a part that pulls off this is the manual key then unclip the plastic cover at the door handle it should be marked with a small key simble the turn key to open and lock.
mr dw, February 2008
go to www.keyrepair.co.uk they repair Laguna Key Cards
gazer, April 2007
Mine has done the same, only way I can do it is.
Open passanger door, then when all doors are locked press the door lock from inside the car, close passenger door.
Car is now locked.