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.
Asleep & Awake Functions
Wake up signals turn BCM on to begin controlling and/or monitoring of certain functions. BCM wake-up inputs are as follows:
- Door ajar switches.
- Dome light.
- Parking lights.
- Power door lock switches.
- Interior light request active.
- Ignition key put into ignition lock cylinder.
- Ignition key is removed from ignition lock cylinder.
- Ignition switch in ON position.
- Remote control request to BCM from Remote Function Actuator (RFA).
- Any class 2 communication requiring BCM interaction.
The BCM will fall asleep when controlling of functions and class 2 communication has stopped. After ignition switch is turned to LOCK position and 20 minutes has elapsed without any wake-up signals, the BCM goes into low-power sleep mode. When wake-up inputs are detected, BCM will enter high-power awake mode.
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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.