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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Body & Frame >> Seats >> Rear Seat Reminder System - Inspection >> Rear Seat Reminder System >> Problem Symptoms Table [12/2019 - ] >> Problem Symptoms Table [12/2019 - ]

Problem Symptoms Table [12/2019 - ]

HINT: 

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.

REAR SEAT REMINDER SYSTEM

Symptom Suspected Area Link
Rear seat reminder function does not operate CAN communication system For HV Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2021] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2021 - 10/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 11/2023] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]
For Gasoline Model: Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 11/2023] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2023 - ]
IG Signal Circuit Refer to IG Signal Circuit [12/2019 - 11/2023] , or refer to IG Signal Circuit [11/2023 - ]
Rear Door Courtesy Switch Circuit Refer to Rear Door Courtesy Switch Circuit [12/2019 - 11/2023] , or refer to Rear Door Courtesy Switch Circuit [11/2023 - ]
Main body ECU (Multiplex network body ECU) -
Hybrid vehicle control ECU*1 -
ECM*2 -
Combination meter assembly -
  1. *1: for HV Model
  2. *2: for Gasoline Model