Hyundai Elantra AD Quiz
Body Electrical System

Ventilated Seat Repair Procedures

In this manual: Body Electrical System
General Information — 9Engine Mechanical System — 84Engine Electrical System — 60Emission Control System — 24Engine Control System/Fuel System — 90Automatic Transmission — 92Drive Shaft and Axle — 20Suspension System — 31Steering — 20Restraints — 50Brake System — 63Body (Interior and Exterior) — 214Body Electrical System — 221Heating, Ventilation, and Air Conditioning — 71
25steps
~150min
4/5difficulty
Done 0 of 25

Removal

[Fan]
  1. Disconnect the negative (-) battery terminal.
  2. Remove the front seat. (Refer to Body - "Front Seat Assembly")
  3. Remove the air duct.
  4. Remove the seat blower FAN (A) after removing the screws.
  5. Disconnect the negative (-) battery terminal.
  6. Remove the front seat. (Refer to Body - "Front Seat Assembly")
  7. Remove the screws securing the ventilated seat unit.
  8. Remove the ventilated seat unit (A) after disconnecting the connectors (B).
[Ventilated Seat]

Installation

[Fan]
  1. Install the blower fan.
  2. Install the air duct.
  3. Install the front seat assembly.
  4. Connect the negative (-) battery terminal.
  5. Install the ventilated seat unit.
  6. Install the front seat assembly.
  7. Connect the negative (-) battery terminal.
[Ventilated Seat]

Inspection

The ventilated seat consists of three units: the ventilated seat assembly, the input switch, and the blower for output. Diagnostic Mode
  1. You can enter diagnostic mode by pressing the seat heater button.
  2. You can enter diagnostic mode by referring to the following description.
  3. Press the heating wire switch as shown below.
    A. Press and hold the heating wire switch for at least 3 seconds.
    B. Release the switch for 3 seconds or less, then press and hold it again for 1.5 to 3 seconds.
    C. Release the switch for 3 seconds or less, then press and hold it again for 3 seconds or more.
  4. When the vehicle enters diagnostic mode, the three LEDs (Low, Medium, High) in the heating wire section blink once for 0.5 seconds.
    A. When the vehicle enters self-diagnosis mode, the LEDs operate only as the seat heater switch LEDs.
    B. When two or more faults are detected, the LEDs blink in sequence at 2-second intervals for each fault code.
  5. After entering diagnostic mode, check the LED status to identify the fault.
    Failure Indicator LED (Blinking) Check Items Detailed Checks


    		Low Voltage Detection
    Low voltage outside the operating range was supplied.
    Overvoltage Detection
    Overvoltage outside the operating range was supplied.
    		Fuse (Short)

    B+ Fuse Open



    IGN2 Fuse Open

    		NTC/HEATING MAT (Short)
    1. NTC Element Failure
    2. Heating Mat Open
    3. Heater Wire+ Open
    4. Heater System NTC Open (4.9 V or higher)
    		NTC/HEATING MAT (Disconnected)
    1. Short between controller connector terminal and NTC
    2. Short between controller connector terminal and heater
    3. Short in heater system NTC wiring
    4. Short in heater system heating wire+ wiring
    		Target temperature not reached Target temperature not reached within 40 minutes
    		Short in ventilation fan power supply line Ventilation fan power supply line short (to ground)
    		Fan power supply open Open or disconnected ventilation power supply line connector
    		Short in ventilation fan speed signal Ventilation fan speed signal short (to ground)
    		Open or disconnected ventilation fan speed signal connector Open or disconnected ventilation fan speed signal connector (VCC)
    		Open or disconnected ventilation fan speed signal connector Open or disconnected ventilation fan speed signal connector (GND)
    		Ventilation fan speed signal short (to ground) Ventilation fan speed signal short (to ground)
    		Open or disconnected ventilation fan speed signal connector Open or disconnected ventilation fan speed signal connector (GND)
    		Open or disconnected ventilation fan speed signal connector Open or disconnected ventilation fan speed signal connector (GND)
  6. You can check for a failure by observing the LED blinking pattern.
  7. Fault data is stored in memory by the ventilated seat unit.
  8. Press and hold the passenger seat heater wire switch for 5 seconds or more until the LED blinks four times, which clears the fault data in memory.
  9. Pressing the IGN OFF button ends the seat heater diagnostic mode.
  10. You can check whether the seat heater system operates correctly after turning the ignition on. If you want to check a trouble code, refer to Procedure 2 above.

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