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.
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HOMESERVICE MANUALSLEXUS2004LX 470 V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUS
2004 Lexus LX 470 V8-4.7L (2UZ-FE)
Information Bus
2004 Lexus LX 470 V8-4.7L (2UZ-FE)SECTION Information Bus
Description and Operation
Testing and Inspection
Locations
Diagrams- Diagram Information and Instructions
- Diagnostic Aids
- Electrical Diagrams
- Multiplex Communication System
- Wiring Diagram Index
- Multiplex Communication System Part 1
- Multiplex Communication System Part 2
- Multiplex Communication System Part 3
- Multiplex Communication System Part 4
- Multiplex Communication System Part 5
- Multiplex Communication System Part 6
- Multiplex Communication System Part 7
- Multiplex Communication System Part 8
- Multiplex Communication System Part 9
- Multiplex Communication System Part 10
- Multiplex Communication System Part 11
- Multiplex Communication System Part 12
- Multiplex Communication System Part 13
- Multiplex Communication System Part 14
- Multiplex Communication System Part 15
- Multiplex Communication System Part 16
- Multiplex Communication System Part 17
- Multiplex Communication System Part 18
- Multiplex Communication System Part 19
- Multiplex Communication System Part 20
- Multiplex Communication System Part 21
- Multiplex Communication System Part 22
- Multiplex Communication System Part 23
- Multiplex Communication System Part 24
- Multiplex Communication System (Communication Bus)
- Multiplex Communication System
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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.