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.
Smart Junction Box (SJB): Notes
The Smart Junction Box (SJB) (located under the instrument panel to the left of the steering column) has control of the following systems:
- Interior lighting
- Exterior lighting
- Dimmable backlighting
- Battery saver function
- Delayed accessory relay function
- Horn
- Heated rear window
- Brake shift interlock
- Power door locks (vehicles without Intelligent Access (IA))
- Remote Keyless Entry (RKE) system
- Perimeter alarm
- Passive Anti-Theft System (PATS) (vehicles without IA)
- Tire Pressure Monitoring System (TPMS)
Refer to the appropriate procedure for system specific information and diagnostics.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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