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

Torque Specification

TORQUE SPECIFICATION

Part Tightened	N.m	kgf.cm	ft.lbf
Intake air control valve assy x Intake air surge tank	21	214	15
Surge tank stay No. 2 x Throttle body assy	20	199	14
Front suspension upper brace center x Body	80	816	59
Intake air control valve assy No. 2 x Intake air surge tank	10	102	7.4

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.