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 LX 470FACTORY OEM SERVICE PROCEDURE
Motor Shift Control System: Inspection
- INSPECT SWITCH POSITION
- Start the engine, and shift the transfer shift lever to the "H" position.
- Check that the center diff. indicator light comes on when the switch is in "ON" position. Check that the light goes off when the switch is in "OFF" position.
- INSPECT SHIFT LEVER POSITION
- Start the engine, and turn the center diff. lock switch to OFF.
- Check that the center diff. indicator light comes on when the transfer shift lever is shifted to the "L" position. Check that the light goes off when the lever is shifted to the "N" or "H" position.
- INSPECT CENTER DIFF. LOCK CONTROL RELAY
- Check that continuity exists between each terminal, as shown in the chart.
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.
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