Small wireless sensors are attached to the inside of all 5 wheels which send a signal when a tire goes below a pre set psi.
It could, some vehicles do have a tire pressure sensor in the spare.
tire pressure should be on a sticker on the drivers door.
low tire pressure
44 psi
When "low tire pressure" shows up hold down on the RESET for several seconds
Listed in your owners manual and also found on the drivers door post.
The light usually comes of when the pressure is right and equal in all tires
well....because you lost air pressure
low tire pressure.
there is a button near the hood release. Press it for a few seconds and it will reset the tire pressure indicator alarm.
The tire pressure in a 2005 Toyota Highlander should be about 35 pounds. This model has a low pressure indicator alarm.
that you have low tire pressure. get more air in your tires and fill it to the numbers located somewhere near the driver's door