Problem Symptoms Table [12/2017 - ]

NOTE:

If the battery voltage is low, the mirror heater function may not operate. When "High Power Consumption Partial Limit On AC/Heater Operation" is displayed on the multi-information display in the combination meter assembly, inspect the battery, referring to On-vehicle Inspection for the charging system.
Refer to ON-VEHICLE INSPECTION [12/2017 - 10/2020] , or refer to ON-VEHICLE INSPECTION [10/2020 - 10/2022] , or refer to ON-VEHICLE INSPECTION [10/2022 - 10/2023] , or refer to ON-VEHICLE INSPECTION [10/2023 - ]
If the main body ECU (multiplex network body ECU) is replaced, refer to Registration.
Refer to REGISTRATION [12/2017 - 10/2020] , or refer to REGISTRATION [10/2020 - 10/2022] , or refer to REGISTRATION [10/2022 - 10/2023] , or refer to REGISTRATION [10/2023 - ]

HINT:

If the battery voltage is low, the mirror heater function may not operate. When "High Power Consumption Partial Limit On AC/Heater Operation" is displayed on the multi-information display in the combination meter assembly, check the Data List item "Battery Control Count (Body ECU)".
Refer to DATA LIST / ACTIVE TEST [12/2017 - 10/2023] , or refer to DATA LIST / ACTIVE TEST [10/2023 - ]
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

ECU RELATED

Symptom	Suspected Area	Link
All devices connected to the front multiplex network ECU LH do not operate (motor, lights etc.)	Harness or connector (BDR terminal circuit)	-
	Front multiplex network door ECU LH	Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023] , or refer to DISASSEMBLY [10/2023 - ]
All devices connected to the front multiplex network ECU RH do not operate (motor, lights etc.)	Harness or connector (BDR terminal circuit)	-
	Front multiplex network door ECU RH	Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023] , or refer to DISASSEMBLY [10/2023 - ]

GENERAL

Symptom	Suspected Area	Link
Driver side power mirror cannot be adjusted with power mirror switch	Proceed to "Driver Side Power Mirror cannot be Adjusted with Power Mirror Switch"	Refer to Driver Side Power Mirror cannot be Adjusted with Power Mirror Switch [12/2017 - ]
Front passenger side power mirror cannot be adjusted with power mirror switch	Proceed to "Front Passenger Side Power Mirror cannot be Adjusted with Power Mirror Switch"	Refer to Front Passenger Side Power Mirror cannot be Adjusted with Power Mirror Switch [12/2017 - ]
Power mirror cannot be adjusted with power mirror switch	Multiplex network master switch assembly	Refer to REMOVAL [12/2017 - ]
Reverse shift-linked function of power mirrors does not operate (memory and reactivation function of mirror surface position is normal)	Main body ECU (multiplex network body ECU)	Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]
Reverse shift-linked function of driver side power mirror does not operate	Front multiplex network door ECU LH	Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023] , or refer to DISASSEMBLY [10/2023 - ]
Reverse shift-linked function of front passenger side power mirror does not operate	Front multiplex network door ECU RH	Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023] , or refer to DISASSEMBLY [10/2023 - ]
Driver side mirror heater does not operate (window defogger system is normal)	Outer mirror LH	Refer to INSPECTION [12/2017 - ]
	Outer mirror actuator assembly LH	Refer to INSPECTION [12/2017 - ]
	Front multiplex network door ECU LH	Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023] , or refer to DISASSEMBLY [10/2023 - ]
Front passenger side mirror heater does not operate (window defogger system is normal)	Outer mirror RH	Refer to INSPECTION [12/2017 - ]
	Outer mirror actuator assembly RH	Refer to INSPECTION [12/2017 - ]
	Front multiplex network door ECU RH	Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023] , or refer to DISASSEMBLY [10/2023 - ]
Automatic glare-resistant EC mirror does not operate	Inner rear view mirror assembly	Refer to INSPECTION [12/2017 - 10/2020] , or refer to INSPECTION [10/2020 - ]
	Outer mirror LH	Refer to INSPECTION [12/2017 - ]
	Outer mirror actuator assembly LH	Refer to INSPECTION [12/2017 - ]
	Outer mirror RH	Refer to INSPECTION [12/2017 - ]
	Outer mirror actuator assembly RH	Refer to INSPECTION [12/2017 - ]
	Harness or connector	-

RETRACT FUNCTION

Symptom	Suspected Area	Link
Power retract mirrors do not operate with power retract mirror switch	Multiplex network master switch assembly	Refer to REMOVAL [12/2017 - ]
Driver side power retract mirror does not operate with power retract mirror switch	Outer mirror actuator assembly LH	Refer to INSPECTION [12/2017 - ]
	Front multiplex network door ECU LH	Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023] , or refer to DISASSEMBLY [10/2023 - ]
Front passenger side power retract mirror does not operate with power retract mirror switch	Outer mirror actuator assembly RH	Refer to INSPECTION [12/2017 - ]
	Front multiplex network door ECU RH	Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023] , or refer to DISASSEMBLY [10/2023 - ]
AUTO power retract mirrors do not operate (manual operation is normal)	Wireless door lock control system	Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 10/2023] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]
	Smart access system with push-button start (for Entry Function)	Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 10/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 10/2023] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]
	Multiplex network master switch assembly	Refer to REMOVAL [12/2017 - ]

MEMORY AND REACTIVATION FUNCTION

Symptom	Suspected Area	Link
Power mirror surface position is not memorized or does not return to memorized position	Proceed to "Power Mirror Surface Position is not Memorized or does not Return to Memorized Position"	Refer to Power Mirror Surface Position is not Memorized or does not Return to Memorized Position [12/2017 - ]

MEMORY CALL FUNCTION

Symptom	Suspected Area	Link
Wireless-linked return function does not operate	Front power seat control system	Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2017 - 10/2023] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2023 - ]
Wireless-linked return function does not operate	Main body ECU (multiplex network body ECU)	Refer to REMOVAL [12/2017 - 09/2018] , or refer to REMOVAL [09/2018 - 10/2020] , or refer to REMOVAL [10/2020 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

MEMORY FUNCTION (REVERSE SHIFT-LINKED MIRROR POSITION MEMORIZATION FUNCTION)

Symptom	Suspected Area	Link
Driver side power mirror surface position is not memorized with reverse shift-linked function	Front multiplex network door ECU LH	Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023] , or refer to DISASSEMBLY [10/2023 - ]
Front passenger side power mirror surface position is not memorized with reverse shift-linked function	Front multiplex network door ECU RH	Refer to DISASSEMBLY [12/2017 - 09/2018] , or refer to DISASSEMBLY [09/2018 - 10/2020] , or refer to DISASSEMBLY [10/2020 - 10/2022] , or refer to DISASSEMBLY [10/2022 - 10/2023] , or refer to DISASSEMBLY [10/2023 - ]