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 DIAGNOSISLIGHTING AND HORNSHEADLAMPSERVICE PRECAUTIONS
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Headlamp: Service Precautions
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Service Precautions
PRECAUTION
PRECAUTION OF HEADLIGHT BULB REPLACEMENT
a. When the halogen lamp (headlight and front fog light) surface is contaminated by oil, the lamp service life is shortened as it becomes hot when it is turned on.
b. Since the internal pressure of a halogen lamp bulb (headlight and front fog light) is high, carefully handle it as dropping a bulb may cause an explosion with jumping glass chips
c. When the lens are held with the bulb being removed for a long period of time, the lens may be contaminated by dirt or moisture. So being the work after preparing a new one when replacing a bulb.
d. Always use a replacement bulb having the same watt rating.
e. Firmly reinstall the socket after bulb replacement. Other wise, cloudy lens or invasion by water will occur.
PRECAUTION OF HEADLIGHT BULB REPLACEMENT
a. When the halogen lamp (headlight and front fog light) surface is contaminated by oil, the lamp service life is shortened as it becomes hot when it is turned on.
b. Since the internal pressure of a halogen lamp bulb (headlight and front fog light) is high, carefully handle it as dropping a bulb may cause an explosion with jumping glass chips
c. When the lens are held with the bulb being removed for a long period of time, the lens may be contaminated by dirt or moisture. So being the work after preparing a new one when replacing a bulb.
d. Always use a replacement bulb having the same watt rating.
e. Firmly reinstall the socket after bulb replacement. Other wise, cloudy lens or invasion by water will occur.
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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.