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.
Body Control Module (BCM)
| Refer to COMPONENT INDEX . |
Both the front door window motors incorporate an electronic unit that communicates with the BCM via LIN bus. The integrated electronic unit, in addition to providing a supply to the power window motor, also manages the anti-pinch function.
The switch in the driver side switch is connected to the BCM. When the switch is operated at the master switch for the passenger door, the BCM sends the signal over the LIN bus to passenger side window motor to operate the passenger side motor.
The BCM directly controls the rear window motor operations and modes.
The BCM power to the window switches also supply the LED lighting within the switches.
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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.