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.
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HOMESERVICE MANUALSTOYOTA2002HIGHLANDER 4WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISSERVICE PRECAUTIONSVEHICLE DAMAGE WARNINGSTRACTION CONTROL (TRAC) SYSTEM
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Traction Control (TRAC) System
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Traction Control (TRAC) System
FOR VEHICLES EQUIPPED WITH TRACTION CONTROL (TRAC) SYSTEM
NOTE: When using a 2-wheel drum tester such as a speedometer tester or chassis dynamometer, etc., or jacking up the front wheels and driving the wheels, always push in the TRAC cut ("TRAC OFF") switch and turn the TRAC system OFF.
Confirm TRAC system is OFF
1. Press the TRAC cut ("TRAC OFF") switch.
2. Check that the TRAC OFF indicator light comes on when the TRAC system is turned OFF by the TRAC cut switch.
HINT: TRAC cut switch is reset after the ignition switch has been turned OFF and ON.
The TRAC system can be operated.
3. Begin measurements.
4. Press the TRAC cut switch to turn the TRAC to the operative mode and check that the TRAC OFF indicator light goes OFF.
HINT: The SLIP indicator light blinks when the TRAC system in operation.
NOTE: When using a 2-wheel drum tester such as a speedometer tester or chassis dynamometer, etc., or jacking up the front wheels and driving the wheels, always push in the TRAC cut ("TRAC OFF") switch and turn the TRAC system OFF.
Confirm TRAC system is OFF
1. Press the TRAC cut ("TRAC OFF") switch.
2. Check that the TRAC OFF indicator light comes on when the TRAC system is turned OFF by the TRAC cut switch.
HINT: TRAC cut switch is reset after the ignition switch has been turned OFF and ON.
The TRAC system can be operated.
3. Begin measurements.
4. Press the TRAC cut switch to turn the TRAC to the operative mode and check that the TRAC OFF indicator light goes OFF.
HINT: The SLIP indicator light blinks when the TRAC system in operation.
RENDER: 1.0x
NO RELATED
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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.