Without knowing the make and model of your vehicle, it hard to definitively give insight on the exact component that has failed. In general, when the door is opened, the switch turns on the interior lights. If the lights are not coming on, then its possible the switch has failed. It also possible there is a short between the fuse and the door Asasytal LED Car Interior Lighting Boot Trunk Luggage Light, 12V Bright White Compatible with Ford B-Max C-Max C-MAX S-Max Cou-gar EcoSport Es-cort Figo Fie-sta Focus Fusion Mon-deo O-rion, 2 Pieces 5.0 out of 5 stars 1 Get the best deals on Genuine OEM Interior Light Assemblies for Ford Focus when you shop the largest online selection at eBay.com. Free shipping on many items | Browse your favorite brands | affordable prices. Quick Specs. Gas Mileage 24 mpg City/35 mpg Hwy. Engine Gas I4, 2.0L. EPA Class Compact. Style Name 2dr Cpe S. Drivetrain Front Wheel Drive. Passenger Capacity 5. Passenger Doors 2. Body Style 2dr 4 Reviews. $139.95. See Details. Projector Headlight W/ LED Strip/LED Turn Signal Matte Black/Clear Pair Focus ST 2013-2014. Review This Product. $307.99 MSRP $319.99. See Details. LED Taillight With Fiber Optic Strip Chrome/ Smoke Pair Focus ST 2013-2014. Review This Product. SKU: CL8Z-13E700-AA. Other Names: Kit Additional Lamp Electronic. Description: Interior lighting sets an engaging glow by adding flair- individuality and atmosphere to your vehicle- whenever the mood strikes. Set your own mood - and choose your preferred interior LED lighting color - with this Interior Light Kit. The maplights then at either side, the courtesy lights behind the sunvisors (if installed), the glovebox light, the front footwells (again, if installed) and the boot light all require a T10 aka W5W wedge type bulb. Fog Lamps (Optional) Adjustable Steering Wheel. Trip Computer. Universal Garage Door Opener (Optional) Intermittent Wipers. Variable Speed Intermittent Wipers. Rear Floor Mats (Optional) Electrochromic rearview mirror (Optional) Driver Vanity Mirror. .

ford focus 2008 interior light