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.
2003 Lexus ES 300FACTORY OEM SERVICE PROCEDURE
Body Control Module: Removal
WARNING: This page is about a different car, the 2004 Chrysler Pacifica. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect and isolate the battery negative cable.
- Remove the lower instrument panel silencer.
- Remove the knee blocker airbag (Refer to AIR BAG RESTRAINT SYSTEMS ).
- Unclip the 72-way bulkhead connector from the Body Control Module (BCM) mounting assembly.
- Move bulkhead wiring aside.
- Disconnect the five wire connectors from the BCM.
- Remove the four screws holding the BCM to the bulkhead (Figure).
- Remove the BCM from the mounting bracket.
Factory Service Tools
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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.