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Hyundai Tucson: TREAD Lamp

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Suspension System / Tire Pressure Monitoring System / TREAD Lamp

  • Tire Under Inflation / Leak Warning.
  1. Turn on condition
  • When tire pressure is below allowed threshold
  • When rapid leak is detected by the sensor.
  • Indicates that tire needs to be re-inflated to placard pressure / repaired.
  1. Turn off condition
  • Under-inflation ; When tire pressure is above (warning threshold + hysteresis).
  • Rapid Leak ; When tire pressure is above (leak warning threshold).

DTC Warning

  1. Turn on condition
  • When the system detects a fault that is external to the receiver/ sensor.
  • When the system detects a receiver fault.
  • When the system detects a sensor fault.
  1. Turn off condition
  • f the fault is considered as 'critical', then the lamp is held on throughout the current Ignition cycle (even if the DTC has been demoted). This is because it is important to bring the problem to the drivers attention. On the following Ignition cycle, the demotion conditions will be rechecked.

    If the demotion conditions occur, the lamp will be turned off. It will be held on until DTC demotion checking is completed.

  • Non critical' faults are those that can occur temporarily e.g. vehicle battery under voltage. The lamp is therefore turned off when the DTC demotion condition occurs.

WARNING

If the vehicle starts within 19 minutes after the replacement of the wheel of the stopped vehicle, the TPMS Malfunction Indicator on the instrument cluster illuminates.

  • The above symptom is due to communication failure between the BCM and the replaced TPMS ID.
  • This communication failure indicator turns off in 19 minutes after the vehicle stops through the BCM's automatic learning process of TPMS ID.

    (When driving the vehicle after stopping for over 19 minutes, the indicator turns off automatically.)

System Fault

  1. General Function
  • The system monitors a number of inputs across time in order to determine that a fault exists.
  • Faults are prioritized according to which has the most likely cause.
  • Maximum fault store is equal to 15.
  • Certain faults are not covered through DTC. The main ones are :

a. Sensor thermal shutdown (over 257ºF / 125ºC).

b. Ignition Line stuck ; requires observation of lamps at Ignition ON to diagnose.

Components Location

  1. Receiver
  2. TPMS Sensor

Description

  1. Driving state

Sensor transmissions occur every 1 minutes and pressure is measured every 15 seconds.

  1. Stationary state

Sensor transmissions does not occur and pressure is measured every 60 seconds.

  1. Auto learning status

When driving after stopping more than 15 minutes , sensor transmissions occur eveiy 33 seconds and pressure is measured every 10.8 seconds.

  1. Off status

The TPMS sensor is not operated.

Due to stock status, does not measured pressure, temperature, battery status.

  1. Alert State :

When a 2 psi change in pressure from the last transmission occurs, transmit tire information immediately.

The pressure is measured every 2 seconds.

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