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.

2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Inspection Procedure

CHECK ENGINE CONTROL SYSTEM

Check if any engine control system DTC is output (See DTC CHECK/CLEAR for 2UR-GSE)

Result

RESULT REFERENCE

Result	Proceed to
DTC is not output	A
DTC is output	B

B: INSPECT ENGINE CONTROL SYSTEM (for 2UR-GSE) (See DIAGNOSTIC TROUBLE CODE CHART )

A: REPLACE ECM (for 2UR-GSE) (See REMOVAL )

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.