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 DIAGNOSISSTARTING AND CHARGINGBATTERYTESTING AND INSPECTION
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Battery: Testing and Inspection
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Testing and Inspection
ON-VEHICLE INSPECTION
1. CHECK BATTERY ELECTROLYTE LEVEL
a. Check the electrolyte quantity of each cell
1. If under the lower level, replace the battery (or add distilled water if possible) and check the charging system.
2. CHECK BATTERY VOLTAGE
a. After having driven the vehicle and in the case that 20 minutes have not passed after having stopped the engine, turn the ignition switch ON and turn on the electrical system (headlight, blower motor, rear defogger etc.) for 60 seconds to remove the surface charge.
b. Turn the ignition switch OFF and turn oft the electrical Systems.
c. Measure the battery voltage between the negative (-) and positive (+) terminals of the battery.
Standard voltage: 12.5 - 12.9 V at 20 °C (68 °F)
If the voltage is less than specification, charge the battery.
d. Check the indicator as shown in the illustration.
HINT:
- Blue: OK
- White: Charging Necessary
- Red: Insufficient Water
3. CHECK BATTERY TERMINALS, FUSIBLE LINK AND FUSES
a. Check that the battery terminals are not loose or corroded.
If the terminals are corroded, clean the terminals.
b. Check the fusible link, H-fuses and fuses for continuity.
1. CHECK BATTERY ELECTROLYTE LEVEL
a. Check the electrolyte quantity of each cell
1. If under the lower level, replace the battery (or add distilled water if possible) and check the charging system.
2. CHECK BATTERY VOLTAGE
a. After having driven the vehicle and in the case that 20 minutes have not passed after having stopped the engine, turn the ignition switch ON and turn on the electrical system (headlight, blower motor, rear defogger etc.) for 60 seconds to remove the surface charge.
b. Turn the ignition switch OFF and turn oft the electrical Systems.
c. Measure the battery voltage between the negative (-) and positive (+) terminals of the battery.
Standard voltage: 12.5 - 12.9 V at 20 °C (68 °F)
If the voltage is less than specification, charge the battery.
d. Check the indicator as shown in the illustration.
HINT:
- Blue: OK
- White: Charging Necessary
- Red: Insufficient Water
3. CHECK BATTERY TERMINALS, FUSIBLE LINK AND FUSES
a. Check that the battery terminals are not loose or corroded.
If the terminals are corroded, clean the terminals.
b. Check the fusible link, H-fuses and fuses for continuity.
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.