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.
Battery Rundown Protection
Body Control Module (BCM) helps to prevent inadvertent battery rundown from courtesy lights left on. The BCM monitors current draw on the courtesy light circuit and will interrupt power to the courtesy lights to minimize battery drain. When ignition is turned off, a time-out period of 20 minutes begins. After 20 minutes, the inadvertent output is turned off. When the BCM receives a wake up signal, it will turn the output back on and reset time-out period.
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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.