DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Seats >> Climate Control Seat System - Diagnostics & Symptom Tests >> Climate Control Seat System >> Problem Symptoms Table [12/2019 - 11/2023] >> Problem Symptoms Table [12/2019 - 11/2023]

Problem Symptoms Table [12/2019 - 11/2023]

NOTE:

If the auxiliary battery voltage becomes low, auxiliary battery load control will operate in order to ensure sufficient power is supplied to the power steering system. In this case, the climate control seat system may not operate.

HINT: 

CLIMATE CONTROL SEAT SYSTEM

Symptom Suspected Area Link
Seat blower volume is low (front LH seat) Check that the air ducts are not disconnected or damaged Refer to ON-VEHICLE INSPECTION [12/2019 - ] 
Seat cushion climate control blower assembly LH -
Seatback climate control blower LH -
Seat blower volume is low (front RH seat) Check that the air ducts are not disconnected or damaged Refer to ON-VEHICLE INSPECTION [12/2019 - ] 
Seat cushion climate control blower assembly RH -
Seatback climate control blower RH (Separate type front seatback spring assembly (RH)) -
Seat blower volume does not change (front LH seat) Climate control switch (Air conditioning control assembly) -
Seat cushion climate control blower assembly LH -
Seatback climate control blower LH -
Air conditioning amplifier assembly -
Seat blower volume does not change (front RH seat) Climate control switch (Air conditioning control assembly) -
Seat cushion climate control blower assembly RH -
Seatback climate control blower RH (Separate type front seatback spring assembly (RH)) -
Air conditioning amplifier assembly -
Climate control seat system does not operate Refer to the "Climate Control Seat System does not Operate". Refer to Climate Control Seat System does not Operate [12/2019 - 10/2022] , or refer to Climate Control Seat System does not Operate [10/2022 - 11/2023]