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.
System Operation: BCMC
The BCMC controls various systems by monitoring inputs from switches, sensors and network messages from other modules and components on the HS-CAN1. Based on these inputs, the BCMC activates outputs. For example, the BCMC controls the high voltage battery coolant diverter valve, high voltage battery coolant cooler valve, front evaporator shut off valve and park by wire motor and solenoid.
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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.