I'm not 100% sure but I believe this is a Tire Pressure Warning Sensor. In the Highlander it is measured indirectly by tire rotation using the ABS Speed Sensor. The reset is located under the dash above where your left knee would be in the drivers seat.
This is the check tire pressure light. you either have a low tire or bad sensors. Toyota sensors have a problem where if the tires are under 35psi the light eventually comes on, even if their recommended pressure is 30. The spares on the suvs may also have a sensor. If the valve stem looks like aluminum it has a sensor in it, be careful with these as they are very expensive to replace.
Tire pressure.
Tire pressure
Low tire pressure.
Low tire pressure on the 2011
Most likely it's tire pressure.
tire pressure low or bad sensor
What does the triangle with exclamation point light mean in 2006 Lexus Gs 300
Brake system warning light.....
If the exclamation point is inside a yellow horseshoe, the tire pressure is low
Usually, " warning!!!"
A triangle with an exclamation point is the usual symbol on Microsoft Windows systems for an "exclamation" event. This typically indicates a system event notification that can be an error or needs human intervention.
that is your low tire pressure indicator, check your air pressure in all tires, including spare