An illuminated light on my dash shows that I have a low tire. Can I just put air in it?
In many cases correcting the air pressure in your tires will extinguish the Tire Pressure Monitoring System (TPMS) warning light. Often seasonal temperature drops will lower tire air pressure a few pounds (a good case for Nitrogen – see 11 above) and trigger the TPMS warning light. In all cases where one or two particular tires are significantly lower than the others, or lower than the factory recommended pressure, a trained tire technician should examine the tire to determine the cause and examine the casing for signs of over stress. Some TPMS systems require special tools to access the vehicle computer. Advanced level tire technicians are trained and equipped for this technology.