i have a 2003 vectra-c 2.2i SRi. The switch panel on my passanger door isn't working. electric window, electric mirror and door locking buttons don't work from passanger door. The window can be operated from the drivers door, central locking on the door operates OK but electric mirror doesn't work from drivers door. Knowing how complicated the vectra is, is it just a simple case of needing a new switch panel or could it be something else.