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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Body & Frame >> Mirrors >> Power Mirror Control System (W/ Memory) - Diagnostic Codes & Symptom Tests >> POWER MIRROR CONTROL SYSTEM (w/ Memory) >> Mirror Heater does not Operate with Rear Defogger Switch [12/2019 - 11/2023] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • The power mirror control system (w/ Memory) uses the CAN and LIN communication system. Inspect the communication functions by following How to Proceed with Troubleshooting. Troubleshoot the power mirror control system (w/ Memory) after confirming that the communication systems are functioning properly.

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 11/2023]

  • If the auxiliary battery voltage is low, auxiliary battery load control will operate in order to ensure sufficient power is supplied to the power steering system. In this case, the mirror heater function may not operate.
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