Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Interior Lighting: Notes
The interior lighting system consists of two subsystems: The interior lamps and the demand lamps.
The interior lamps are controlled by the front electronics module (FEM). The interior lamp subsystem consists of the left and right puddle lamps, footwell lamps, map lamps and the grab handle lamps. The FEM controls the interior lamps by providing the ground circuit when a door ajar is detected.
The demand lamps subsystem consists of the glove compartment lamp, luggage compartment lamp, front map lamps, left and right vanity mirror lamps and the rear grab handle reading lamps. Each of these lamps are switched individually and share a common ground circuit.
Both subsystems use the same power supply circuit through switched system power (SSP) relay 3, with the exception of the luggage compartment lamp which is powered through SSP relay 4.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.