•Driver seat position sensor.
• Front crash severity sensors.
• Restraints control module with impact and safing sensors.
• Restraint system warning light and backup tone.
• The electrical wiring for the airbags, crash sensor(s), safety belt
pretensioners, front safety belt usage sensors, driver seat position
sensor, and indicator lights.
How does the Restraint Safety System work?
The Restraint Safety System can adapt the deployment strategy of your
vehicle’s safety devices according to crash severity and occupant
conditions. A collection of crash and occupant sensors provides
information to the restraints control module. During a crash, the
restraints control module may activate the safety belt pretensioners
and/or either one or both stages of the dual-stage airbag supplemental
restraints based on crash severity and occupant conditions.
SOS POST-CRASH ALERT SYSTEM™
The system flashes the direction indicator lamps and the horn sounds
(intermittently) in the event of a serious impact that deploys an airbag
equipped on your vehicle.
The horn and lamps turn off when:
• You press the hazard button.
• You press the panic button (if equipped) on the remote entry
transmitter.
• Your vehicle runs out of power.
DRIVER AND PASSENGER AIRBAGS
WARNING: Never place your arm or any objects over an airbag
module. Placing your arm over a deploying airbag can result in
serious arm fractures or other injuries. Objects placed on or over the
airbag inflation area may cause those objects to be propelled by the
airbag into your face and torso causing serious injury.
Supplementary Restraints System 45
2015 Navigator(nav)
Owners Guide gf, 2nd Printing, December 2014
USA (fus)
Safety Practices
WARNING:If your vehicle is stuck in snow, mud, or sand, do
not rapidly spin the tires. Spinning the tires can tear the tire and
cause an explosion. A tire can explode in as little as three to five
seconds.
WARNING: Do not spin the wheels at over 35 mph (56 km/h).
The tires may fail and injure a passenger or bystander.
Driving habits have a great deal to do with your tire mileage and safety.
• Observe posted speed limits.
• Avoid fast starts, stops and turns.
• Avoid potholes and objects on the road.
• Do not run over curbs or hit the tire against a curb when parking.
Highway Hazards
No matter how carefully you drive, there is always the possibility that
you may eventually have a flat tire on the highway. Drive slowly to the
closest safe area out of traffic. This may further damage the flat tire, but
your safety is more important.
If you feel a sudden vibration or ride disturbance while driving, or you
suspect your tire or vehicle has been damaged, immediately reduce your
speed. Drive with caution until you can safely pull off the road. Stop and
inspect the tires for damage. If a tire is under-inflated or damaged,
deflate it, remove the wheel and replace it with your spare tire and
wheel. If you cannot detect a cause, have the vehicle towed to the
nearest repair facility or tire dealer to have the vehicle inspected.
Tire and Wheel Alignment
A bad jolt from hitting a curb or pothole can cause the front end of your
vehicle to become misaligned or cause damage to your tires. If your
vehicle seems to pull to one side when you are driving, the wheels may
be out of alignment. Have an authorized dealer check the wheel
alignment periodically.
Wheel misalignment in the front or the rear can cause uneven and rapid
treadwear of your tires and should be corrected by an authorized dealer.
Front-wheel drive vehicles and those with an independent rear
suspension may require alignment of all four wheels.
Wheels and Tires 311
2015 Navigator(nav)
Owners Guide gf, 2nd Printing, December 2014
USA (fus)