Lincoln Electric 2006 Navigator Owner's Manual page 252

Tires, Wheels and Loading
Changing tires with TPMS
It is recommended that you always
have your tires serviced by an
authorized dealer. Each road tire
is equipped with a tire pressure
sensor mounted on the wheel
inside the tire connected to the
valve stem. The tire pressure
sensor must be unbolted from
the wheel prior to tire removal.
The sensor can be removed by
loosening the nut at the valve stem. Failure to remove the sensor
may damage it. The rubber grommet (washer) between the wheel and
the tire pressure sensor needs to be replaced whenever the sensor is
removed to minimize air leaks.
The tire pressure should be checked periodically (at least monthly) using
an accurate tire gauge, refer to Inflating your tires in this chapter.
When replacing valve caps, use the same nylon valve caps that came
with your vehicle. Do not use chrome-plated valve caps because they
may corrode to the valve stems and damage the TPMS sensors.
Understanding your Tire Pressure Monitoring System (TPMS)
The Tire Pressure Monitoring System measures pressure in your four
road tires and sends the tire pressure readings to your vehicle every
minute while you are driving and once an hour when your vehicle is
parked. The Low Tire Warning Lamp will turn ON if the tire pressure is
25% below the pressure listed on the Safety Compliance Certification
Label (approximately 6 to 9 psi below the manufacturer's recommend
tire pressure). If the tire pressure increases 2 psi above the "Light ON"
threshold, then the TPMS light will turn OFF. Once the light is
illuminated, your tires are under inflated and need to be inflated to the
manufacturer's recommended tire pressure. Even if the light turns ON
and a short time later turns OFF, your tire pressure still needs to be
checked.
In short, once the light has turned ON, at least one tire may be under
inflated.
251
2006 Navigator (nav)
Owners Guide (post-2002-fmt)
USA (fus)