Improperly inflated tires can cost you significantly in fuel economy to the tune of as much as 11 cents per gallon on fuel over 4,700 miles. Nissan has a system that aims to help people properly inflate their tires called the Easy-Fill Tire Alert system that is exclusive to Nissan and the automaker has sold about 5.3 million vehicles fitted with the tech. The tech makes it faster and easier to fill tires to recommended pressure.
Drivers need no pressure gauge and don’t have to look up correct pressures. The system requires the car to be in park with the parking brake on. The accessory mode needs to be on with the engine off. When the air begins to go into a tire, the exterior lights flash to show that the system is monitoring pressure change.
Once the correct pressure setting is reached the horn sounds to let the driver know. If the tire is overinflated, the horn sounds again and the indicator lights flash three times. That is to let the owner know that they need to remove some air pressure.
Nissan sells 12 different models with the Easy-Fill Tire alert system. That includes the Altima, Armada, LEAF, Maxima, Murano, Pathfinder, Rogue, Rogue Sport, Sentra, TITAN, Versa and Versa Note.
Nissan says that the over inflation warning will sound if the tire is overinflated by 4psi. The horn will honk once when enough air is let out to get the tire back to the correct pressure.