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 ES 350FACTORY OEM SERVICE PROCEDURE
How To Proceed With Troubleshooting
HINT:
- Use this procedure to troubleshoot the active engine mounting system.
- Techstream should be used in steps 2, 6 and 7.
- VEHICLE BROUGHT TO WORKSHOP
- CUSTOMER PROBLEM ANALYSIS
- INSPECT BATTERY VOLTAGE
Standard Voltage:
11 to 14 V
If the voltage is below 11V, recharge or replace the battery before proceeding.
- CHECK AND CLEAR DTCS
- Refer to the DTC CHECK / CLEAR .
- VISUAL INSPECTION
- PERFORM ACTIVE TEST
- Connect Techstream to the DLC3.
- Start the engine.
- Select the item "Powertrain / E-ACM / Active Test / Check the E-ACM".
- CHECK FOR DTC
- Check for DTCs and note any codes that are output.
- Delete the DTC.
- Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC suggests.
Result
RESULT CHARTResult Proceed to DTC does not reoccur A DTC reoccurs B
B: GO TO DTC CHART
A: Go to next step.
- OVERALL ANALYSIS AND TROUBLESHOOTING
- Terminals of ECU (See TERMINALS OF ECU ).
- ADJUST, REPAIR OR REPLACE
- CONFIRMATION TEST
NEXT: END
Factory Service Tools
Use the Manual With the Right Hardware
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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.
