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.
Purpose of the System
The interior lighting is automatically activated from the door contacts, tailgate switch, remote key and the crash inertia switch, and can be controlled manually from the switch on the interior light unit.
The BC1 is encoded to operate the interior lights in either Soft On/Soft Off or Instant On/Instant Off. In Soft On/Soft Off the interior lights are switched on and off gradually, giving a soft effect. In Instant On/Instant Off the lights are switch on and off instantly.
When the soft on/off feature of the interior lights is active, the BC1 controls the interior light output and map light outputs using pulse width modulation to alter the intensity of the light output, this applies to all operating modes except manual control via the interior light switch.
Three different modes of operation are possible:
- Automatic Control Mode
- ON/OFF Mode
- Permanent OFF Mode
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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