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Hyundai Tucson: Seat heater

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Body Electrical System / Seat Electrical / Seat heater

Components

  1. Seat heater unit
  2. Seat cushion heater
  3. Seat back heater

  1. Second line seat heater unit
  2. Second line seat cushion heater
  3. Second line seat back heater

Driver/Passenger Seat Heater

Components

Second Line Seat Heater

Second Line Seat Heater

Driver/Passenger

Driver/Passenger

Inspection

  1. Check for continuity and measure the resistance between terminals.

  1. Operate the seat heater after connecting the connector, and then check the thermostat by measuring the temperature of seat surface.

Diasgnosis mode

Diasgnosis mode

  1. Enter the diagnostic mode referring to below description.
  • In failure mode, press the ventilation seat button for 4 seconds and release it.
  • Press the ventilation seat button for 2 seconds and release it.
  • Lastly, press the ventilation seat button for 4 seconds and release it.
  • When entering the failure mode, the LED of the ventilation seat button turns ON/OFF/blinks at each stage.
  1. After entering the diagnosis mode, you can check what failed by checking the blinking LED.
  2. The table below indicates the failure based on priority, upper item means higher priority.
  3. If more than one failure is detected, higher priority failure is displayed through the LED flashing pattern.
  4. Lower priority failure will be displays if higher priority failure is reset.

Heater Switch

Driver/Passenger

Driver/Passenger

Second line seat heater

Second line seat heater

  1. If you press the seat heater button for more than five seconds, the LED for malfunctioning memory will blink four times and the recorded memory will be deleted.
  2. Pressing the IGN OFF button will end the diagnosis mode for the seat.
  3. You can check whether the heating seat system works properly after turning the IGN ON. If you want to check the error code, you can refer to the procedure of 2 above.

Removal

Seat Cushion Heater

  1. Disconnect the negative (-) battery terminal.
  2. Remove the cushion assembly after separating the seat cusion cover.

    (Refer to Body - "Front Seat Cushion Cover") (Refer to Body - "Rear Seat Cushion Cover")

Seat Back Heater

  1. Disconnect the negative (-) battery terminal.
  2. Remove the seat back cover.

    (Refer to Body - "Front Seat Back Cover") (Refer to Body - "Rear Seat Back Cover")

Installation

  1. Install the seat cover with seat cushion/back assembly.
  2. Install the front/rear seat.
  3. Connect the negative (+) battery terminal.

    READ NEXT:

     Seat  heater (Ventilation)

    Components Seat cushion heater (Ventilation) Seat heater (Ventilation) unit Seat back heater (Ventilation) Circuit Diagram Inspection Driver/Passenger Check for continuity and measure the resistance between terminals.

     Front seat heater switch / Rear seat heater switch

    Front seat heater switch Rear seat heater switch Circuit Diagram Connector Pin Information Removal When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components.

     Air ventilation seat

    Component Location Air ventilation seat blower Air ventilation seat control unit Air ventilation seat duct Components Removal Cushion Blower Remove the front seat assembly. (Refer to Body - "Front Seat Assembly")

    SEE MORE:

     High Pressure Fuel Line

    Release residual pressure in fuel line. (Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line") Turn the ignition switch OFF and disconnect the battery (-) terminal.  Remove the air cleaner assembly. (

     Gear actuator assembly

    Components Gear actuator assembly Specification Connector and Terminal Function Circuit Diagram Removal Turn ignition switch OFF and disconnect the negative (-) battery cable. Remove the air cleaner assembly and ai

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