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 GX 470FACTORY OEM SERVICE PROCEDURE

Torque Specification

ENGINE CONTROL SYSTEM TORQUE SPECIFICATION

Part Tightened	N.m	kgf.cm	ft.lbf
Throttle body assy x intake manifold	18	185	13
V-bank cover x Intake manifold	7.5	80	66 in..lbf
ECM x Body	13	133	10
Accelerator pedal rod assy x Body	5.0	51	44 in..lbf

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.