2005 G35 Coupe

[David Lam]

Does anyone know why the tire presurre monitor light comes on for no reason when the tire presurre's OK.

[Infinitiexpert]

Hello

Is possible that one or more of the sensor is not working properly, but most likely the pressure is too low. Make sure you check the tire pressure when the car is cold. It should not be below 28 PSI. If the pressure is below 28 psi the light will come ON. When the heat increases, the tire pressure will also increase, making the warning light turn off.

[C/S]

Just had this same thing on my FX35 when the temperature got cold here in Ohio....

The gauge on my FX is a little off, because when the tires are at 35psi, the internal gauge reads 33, so if you are right at 28 - 30 PSI of actualy pressure in the tire, your internal gauge may read below the 28PSI warning light.