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 DIAGNOSISBODY AND FRAMELOCKSPOWER LOCKSDESCRIPTION AND OPERATION
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)
Power Locks: Description and Operation
2002 Toyota Highlander 4WD L4-2.4L (2AZ-FE)SECTION Description and Operation
SYSTEM OUTLINE
The door lock control is controlled through the various signals input into the body ECU through communication control of the body ECU etc.
1. MANUAL OPERATION
All doors can be Locked/Unlocked through the operation of the driver and passenger side door lock control SW.
2. DOUBLE OPERATION UNLOCK OPERATION
When the door key lock and unlock SW front LH is turned to the unlock side, only the driver's door is unlocked. And if the door key lock and unlock SW front LH is turned to the unlock side again within 3 seconds, all the doors to unlock.
3. MANUAL UNLOCK PROTECTION
Once the doors are locked by the door knob (key less operation), the door key or the transmitter, they can not be unlocked by the door lock control SW. The protection is canceled when the ignition SW is turned on or unlock operation is made by the door key or the transmitter.
4. IGNITION KEY REMINDER OPERATION
When the door lock operation is made using the door knob with the ignition key remained inserted in the key cylinder and the door open, unlock operation is automatically made. Additionally, if lock operation is made with the door lock control SW or door key lock and unlock SW, unlock operation is automatically made after the lock operation has been completed.
The door lock control is controlled through the various signals input into the body ECU through communication control of the body ECU etc.
1. MANUAL OPERATION
All doors can be Locked/Unlocked through the operation of the driver and passenger side door lock control SW.
2. DOUBLE OPERATION UNLOCK OPERATION
When the door key lock and unlock SW front LH is turned to the unlock side, only the driver's door is unlocked. And if the door key lock and unlock SW front LH is turned to the unlock side again within 3 seconds, all the doors to unlock.
3. MANUAL UNLOCK PROTECTION
Once the doors are locked by the door knob (key less operation), the door key or the transmitter, they can not be unlocked by the door lock control SW. The protection is canceled when the ignition SW is turned on or unlock operation is made by the door key or the transmitter.
4. IGNITION KEY REMINDER OPERATION
When the door lock operation is made using the door knob with the ignition key remained inserted in the key cylinder and the door open, unlock operation is automatically made. Additionally, if lock operation is made with the door lock control SW or door key lock and unlock SW, unlock operation is automatically made after the lock operation has been completed.
RENDER: 1.0x
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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.