Description and Operation

Description

The Tire Pressure Monitoring System (TPMS) monitors the pressure and temperature inside the tire to warn the driver of pressure changes that may affect vehicle operation. The TPMS control module analyzes the wireless signal information from the sensors. In other words, the system detects the tire air pressure and warns the driver if the tire pressure drops below the standard level. Low Tire Pressure Warning Light on the instrument panel

Light ON/OFF Conditions when tire pressure decreases or air leaks from the tire

1. 1
   Light ON

   • The light illuminates when the tire pressure drops below the standard level.
2. 2
   Light OFF

   • Low tire pressure: The warning light turns off when the tire pressure exceeds the pressure required to turn off the light.
3. 3
   Warning Conditions and Display

   • When the system detects a malfunction in the external operating environment (low battery voltage, abnormal vehicle speed, etc.), the warning light flashes for approximately 1 minute and then remains on.
4. 4
   Light OFF

   • The warning light turns off when the DTC is cleared. The DTC is automatically cleared when the system does not receive any malfunction signals for 30 or more ignition cycles after it changes to the previous DTC.
5. 5
   General Operation

   • The system monitors many input elements to detect potential malfunctions.
   • The priority of a malfunction depends on its cause.
   • Some malfunctions are not diagnosed as DTCs.

   The main malfunctions are as follows:

   • To diagnose additional malfunction symptoms when the ignition is turned on, check the warning light when the ignition is turned on.
   • Check whether the warning light comes on and then turns off.

TPMS Malfunction Indicator Light / System Malfunction