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.
Relay Control Of Retained Accessory Power
Retained Accessory Power (RAP) is a vehicle power mode that permits operation of selected customer convenience items after ignition switch is turned to OFF position. These selected items will remain in operation until a passenger compartment door is opened or until RAP function timer reaches its shut-off limit.
BCM closes RAP relay in either RAP function as described above or if BCM detects a RUN or ACC power mode. This provides power for following:
- Power windows.
- Sunroof control module (if equipped).
NO RELATED
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.