To replace the interior and map reading lights, carefully prise the light unit lens down at the side with a small screwdriver, then pull the festoon-type bulb from the sprung contacts. For models with map reading lights, hinge back the contact plate to remove the push-fit bulb, and fit the new bulb by reversing the removal process. If necessary, the light unit can be completely removed by taking out the two mounting screws and disconnecting the wiring plug. For the luggage compartment light, prise the light unit out from the trim panel, pull the festoon-type bulb from the contacts, and fit the new bulb by reversing the removal procedure. To address instrument panel illumination, remove the instrument panel, twist the relevant bulbholder anti-clockwise to remove it from the rear, and note that the bulbs may be one-piece items or have a wedge-base that can be pulled out before refitting the panel. The bulbs for switch illumination are integral with the switches and cannot be replaced separately. For heater control illumination, remove the heater control panel, twist the relevant bulbholder anti-clockwise using a screwdriver in the provided slot, and remove it from the rear, noting that the bulb is integral with the holder before refitting the panel.