Some Hyundai vehicles are equipped with a tire pressure monitor that is connected to the on-board computer for the purpose of tracking changes in air pressure in the tires. When the monitor determines that one or more of the tires is under-inflated, a warning light illuminates while driving. The low-pressure situation must be corrected before the tire pressure monitor can reset.
Park the Hyundai on a level surface.
Remove the valve cap of the tire that was indicated as being low on air.
Press the end of the pressure gauge into the nozzle to measure the current air pressure.
Press the end of the compressed air hose into the valve for a few seconds to add air to the tire. Check the pressure again with the gauge. Repeat this process until the gauge shows the appropriate reading.
Replace the cap on the valve.
Drive the car for a few minutes to give the sensors a chance to reset and measure the new pressure reading. The light goes off after the system resets.
