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 MANUALSTOYOTA2001HIGHLANDER 2WD L4-2.4L (2AZ-FE)REPAIR AND DIAGNOSISSERVICE PRECAUTIONSVEHICLE DAMAGE WARNINGSMOBILE COMMUNICATION SYSTEM
2001 Toyota Highlander 2WD L4-2.4L (2AZ-FE)
Mobile Communication System
2001 Toyota Highlander 2WD L4-2.4L (2AZ-FE)SECTION Mobile Communication System
IF VEHICLE IS EQUIPPED WITH MOBILE COMMUNICATION SYSTEM
For vehicles with mobile communication systems such as two-way radios and cellular telephones, observe the following precautions.
1. Install the antenna as far as possible away from the ECU and sensors of the vehicle's electronic system.
2. Install the antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the vehicle's electronic systems. For details about ECU and sensors locations, refer to the applicable component.
3. Avoid winding the antenna feeder together with other wiring as much as possible, and also avoid running the antenna feeder parallel with other wire harnesses.
4. Check that the antenna and feeder are correctly adjusted.
5. Do not install powerful mobile communications system.
For vehicles with mobile communication systems such as two-way radios and cellular telephones, observe the following precautions.
1. Install the antenna as far as possible away from the ECU and sensors of the vehicle's electronic system.
2. Install the antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the vehicle's electronic systems. For details about ECU and sensors locations, refer to the applicable component.
3. Avoid winding the antenna feeder together with other wiring as much as possible, and also avoid running the antenna feeder parallel with other wire harnesses.
4. Check that the antenna and feeder are correctly adjusted.
5. Do not install powerful mobile communications system.
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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.