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
The interior lighting system consists of the following components:
- Smart junction box (SJB)
- Dimmer control switch
- Interior/map lamps
- Luggage compartment lamp
- Vanity mirror lamps
- Door ajar switches
The interior lighting system consists of 2 subsystems:
- Courtesy lamps
- Demand lamps
The courtesy lamps are controlled by the SJB. The SJB supplies voltage to the courtesy lamps. The courtesy lamp subsystem consists of the interior dome lamps, the overhead console lamps (if equipped), and the puddle lamps (if equipped).
The demand lamps are controlled by the SJB. The SJB supplies voltage to the demand lamps. The demand lamps subsystem consists of the luggage compartment lamp, front map lamps, and the left and right vanity mirror lamps.
The SJB supplies power to the interior lighting system. The SJB will set DTCs if certain circuit failures exist with the interior lighting system.
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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.