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.
2012 Toyota Highlander Limited, FWDFACTORY OEM SERVICE PROCEDURE
Throttle Body: Removal: Removal
- REMOVE ENGINE UNDER COVER ASSEMBLY . Refer to REMOVAL - Step 7
- REMOVE NO. 1 ENGINE UNDER COVER . Refer to REMOVAL - Step 8
- DRAIN ENGINE COOLANT . Refer to REPLACEMENT - Step 4
- REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY LH . Refer to REMOVAL - Step 1
- REMOVE FRONT WIPER ARM AND BLADE ASSEMBLY RH . Refer to REMOVAL - Step 2
- REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY . Refer to REMOVAL - Step 4
- REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY . Refer to REMOVAL - Step 5
- REMOVE OUTER COWL TOP PANEL SUB-ASSEMBLY . Refer to REMOVAL - Step 8
- REMOVE V-BANK COVER SUB-ASSEMBLY . Refer to REMOVAL - Step 25
- REMOVE AIR CLEANER CAP SUB-ASSEMBLY . Refer to REMOVAL - Step 5
- REMOVE THROTTLE BODY
- Disconnect the throttle body connector and clamp.
- Disconnect the 2 water by-pass hoses from the throttle body.
- Remove the 4 bolts and throttle body.
- Remove the throttle body gasket from the intake air surge tank.
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.