When the outside temperature drops significantly, the tire pressure could decrease and activate the low tire pressure warning lamp.
The warning lamp could also illuminate when you use a spare wheel, or tire sealant from the inflator kit.
Note:   Regularly checking the vehicle tire pressures can reduce the possibility for the warning lamp to illuminate due to outside air temperature changes.
Note:   After you inflate the tires to the recommended pressure it could take up to two minutes of driving over 20 mph (32 km/h) for the warning indicator to turn off.