Hyundai Tucson Owners & Service Manuals

Hyundai Tucson: Forward/Reverse Parking Distance Warning (PDW) / Parking Distance Warning Malfunction and Limitations

Parking Distance Warning malfunction

After starting the engine, a beep sounds when the gear is shifted to R (Reverse) to indicate Parking Distance Warning is operating normally.

If one or more of the following occurs, check whether the ultrasonic sensor is damaged or blocked.

  • The audible warning does not sound.
  • The buzzer sounds intermittently.
  • The "Parking sensor error or blockage" warning message may appear on the instrument cluster.

If it still does not work properly, have the vehicle inspected by an authorized HYUNDAI dealer.

Limitations of Parking Distance Warning

Parking Distance Warning may not operate normally when:

  • Any sensor is covered or blocked with snow, water, or dirt. Parking Distance Warning operates normally again when unblocked or uncovered.
  • The weather is very hot or cold.
  • The sensor or sensor assembly is disassembled.
  • The surface of the sensor has been damaged or scratched with a sharp object.
  • The sensors or its surrounding area is directly sprayed with high pressure washer.

Parking Distance Warning may malfunction when:

  • Heavy rain or water spray is present.
  • Water flows on the surface of the sensor.
  • The sensor is covered with snow.
  • An ultrasonic sensor with similar frequency is near your vehicle.
  • Sources that generate ultrasonic waves are near your vehicle.
  • Driving on uneven road, gravel roads, or bushes.
  • Your vehicle's bumper height or ultrasonic sensor installation has been modified.
  • Equipment, license plate, or accessories are attached near the ultrasonic sensors.

The following objects may not be detected:

  • Narrow or slim objects such as ropes, chains, or small poles
  • Objects that tend to absorb sensor frequency, such as clothes, spongy material, or snow.
  • Objects less than 40 inches (100 cm) high and less than 6 inches (14 cm) wide
  • Pedestrians, animals, or objects that are very close to the ultrasonic sensors


  • The operation of Parking Distance Warning can be affected by several factors (including environmental conditions). Parking Distance Warning is a supplemental function only.
  • Always turn your head and look for potential hazards around your vehicle when parking.
  • To prevent serious injury or death, pay close attention when driving near objects, pedestrians, and especially children. Some objects may not be detected by ultrasonic sensors, due to the object's distance, size, or material.
    Parking Distance Warning Operation
    Parking Safety button Press the Parking Safety () button to turn on Parking Distance Warning. Press the button again to turn off the function. When Parking Distance Warning is off (b ...

    Reverse Parking Collision-Avoidance Assist (PCA)
    Reverse Parking Collision-Avoidance Assist uses the wide-rear view camera and rear ultrasonic sensors to help detect pedestrians or objects when backing up. The function may warn you or assist ...

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