2011 FORD F450 sensor

Hill start assist (HSA)
The hill start assist feature makes it easier to pull away when the vehicle
is on a slope without the need to use the parking brake. When the hill
start assist feature is active, the vehicle will remain stationary on the
slope for up to two seconds after you release the brake pedal. During
this time, you have time to move your foot from the brake to the
accelerator pedal and pull away. The brakes are released automatically
once the engine has developed sufficient drive to prevent the vehicle
from rolling down the slope. This is an advantage when pulling away on a
slope; for example from a car park ramp, traffic lights or when reversing
uphill into a parking space.
WARNING: The hill start assist feature does not replace the
parking brake. When you leave the vehicle, always apply the
parking brake and select first or reverse gear.
Using hill start assist
The hill start assist feature is activated automatically when the vehicle is
stopped on a slope greater than five degrees. The hill start assist feature
operates with the vehicle facing downhill if reverse gear is selected. The
hill start assist feature will not operate if the parking brake is activated.
WARNING: You must remain in the vehicle once you have
activated the hill start assist feature.
Activating hill start assist
1. Press the brake pedal to bring the vehicle to a complete standstill.
Keep the brake pedal pressed.
2. If the sensors detect that the vehicle is on a slope, the hill start assist
feature will be activated automatically.
3. When you remove your foot from the brake pedal, the vehicle will
remain on the slope without rolling away for approximately up to two
seconds. This hold time will automatically be extended if you are in the
process of driving off.
4. Drive off in the normal manner. The brakes will be released
automatically.
WARNING: If the engine is revved excessively, or if a
malfunction is detected when the hill start assist feature is
active, the hill start assist feature will be deactivated. Driving
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Owners Guide, 4th Printing
USA (fus)

The RSS detects obstacles up to
6 feet (2 meters) from the rear
bumper with a decreased coverage
area at the outer corners of the
bumper, (refer to the figures for
approximate zone coverage areas).
As you move closer to the obstacle,
the rate of the tone increases. When
the obstacle is less than 10 inches
(25.0 cm) away, the tone will sound
continuously. If the RSS detects a
stationary or receding object further
than 10 inches (25.0 cm) from the
side of the vehicle, the tone will
sound for only three seconds. Once
the system detects an object
approaching, the tone will sound
again.
While receiving a warning the radio
volume may be reduced to a
predetermined level. After the
warning goes away, the radio will return to the previous volume.
The RSS may have reduced performance or an increased chance of false
detection if the tailgate is not locked and in the upright position. If the
tailgate is down, the RSS tone may be heard intermittently or
continuously. The tone may also be heard if items in the truck bed
protrude rearward outside the bed.
The RSS automatically turns on when the gearshift lever is placed in R
(Reverse) and the ignition is on. A control in the message center allows
the driver to disable the system. Refer to Message center in the
Instrument Cluster chapter for more information.
Note: If the system cannot be turned off, refer to MyKey™ restricted
features in the Locks and Security chapter for more information.
Note: If your vehicle is equipped with a fully integrated electronic trailer
brake controller (TBC) and a trailer with electric trailer brakes is
connected to your vehicle, the RSS will be disabled. When the vehicle is
shifted into reverse, the message center display will remain in the Rear
Park Aid Off selection. For more information on the TBC, refer to the
Tires, Wheels and Loading chapter.
Keep the RSS sensors (located on the rear bumper/fascia) free
from snow, ice and large accumulations of dirt (do not clean the Driving
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USA (fus)

sensors with sharp objects). If the sensors are covered, it will
affect the accuracy of the RSS.
If your vehicle sustains damage to the rear bumper/fascia, leaving
it misaligned or bent, the sensing zone may be altered causing
inaccurate measurement of obstacles or false alarms.
REARVIEW CAMERA SYSTEM (IF EQUIPPED)
The rearview camera system,
located on the tailgate, provides a
video image, which appears in the
rearview mirror or on the navigation
screen (if equipped), of the area
behind the vehicle. It adds
assistance to the driver while
reversing or reverse parking the
vehicle.
To use the camera system, place the transmission in R (Reverse); an
image will display on the left portion of the rearview mirror or on the
navigation screen (if equipped). The area displayed on the screen may
vary according to the vehicle orientation and/or road condition.Driving
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USA (fus)

Operating the vehicle with the snowplow attached
Do not use your vehicle for snow removal until it has been driven at
least 500 miles (800 km).
The attached snowplow blade restricts airflow to the radiator, and may
cause the engine to run at a higher temperature: Attention to engine
temperature is especially important when outside temperatures are
above freezing. Angle the blade to maximize airflow to the radiator and
monitor engine temperature to determine whether a left or right angle
provides the best performance.
Follow the severe duty schedule in your scheduled maintenance
information for engine oil and transmission fluid change intervals.
Snowplowing with your airbag-equipped vehicle
Your vehicle is equipped with a driver and passenger airbag
Supplemental Restraint System (SRS) The SRS is designed to activate in
certain frontal and offset frontal collisions when the vehicle sustains
sufficient longitudinal deceleration.
Careless or high speed driving while plowing snow which results in
sufficient vehicle decelerations can deploy the airbag. Such driving also
increases the risk of accidents.
WARNING: All occupants of the vehicle, including the driver,
should always properly wear their safety belts, even when an air
bag supplemental restraint system (SRS) is provided.
Never remove or defeat the “tripping mechanisms” designed into the
snow removal equipment by its manufacturer. Doing so may cause
damage to the vehicle and the snow removal equipment as well as
possible airbag deployment.
WARNING: Do not attempt to service, repair, or modify the air
bag supplemental restraint system (SRS) or its fuses. See your
Ford or Lincoln Mercury dealer.
WARNING: Additional equipment such as snowplow equipment
may effect the performance of the airbag sensors increasing the
risk of injury. Please refer to the Body Builders Layout Book for
instructions about the appropriate installation of additional equipment.Driving
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Fuse/Relay
Location Fuse Amp
Rating Protected Circuits
92 20A* Auxiliary power point #4
93 20A* Auxiliary power point #3
94 25A* Upfitter #1
95 25A* Upfitter #2
96 50A* ABS pump
97 40A* Invertor
98 — Not used
99 — Not used
100 25A* Trailer tow turn signals
101 Relay Starter
102 Relay Trailer tow battery charge
103 — Not used
104 — Not used
105 — Not used
106 — Not used
107 — Not used
* Cartridge fuses ** Mini fuses
CHANGING THE TIRES
If you get a flat tire while driving, do not apply the brake heavily.
Instead, gradually decrease your speed. Hold the steering wheel firmly
and slowly move to a safe place on the side of the road.
Note: If your vehicle is equipped with the tire pressure monitoring
system (TPMS), the indicator light will illuminate when the spare tire is
in use. To restore the full functionality of the monitoring system, all road
wheels equipped with tire pressure monitoring sensors must be mounted
on the vehicle.
If your vehicle is equipped with TPMS, have a flat serviced by an
authorized dealer in order to prevent damage to the TPMS sensors, refer
to Tire pressure monitoring system (TPMS) in the Tires, Wheels and
Loading chapter. Replace the spare tire with a road tire as soon as
possible. During repairing or replacing of the flat tire, have the
authorized dealer inspect the TPMS sensor for damage.Roadside Emergencies
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WARNING: The use of tire sealants may damage your tire
pressure monitoring system (TPMS) and should not be used.
However, if you must use a sealant, the TPMS sensor and valve stem
on the wheel must be replaced by an authorized Ford dealer.
WARNING: Refer to Tire pressure monitoring system (TPMS)
in the Tires, Wheels and Loading chapter for important
information. If the tire pressure monitor sensor becomes damaged, it
will no longer function.
Dissimilar spare tire/wheel information
WARNING: Failure to follow these guidelines could result in an
increased risk of loss of vehicle control, injury or death.
If you have a dissimilar spare tire/wheel, then it is intended for
temporary use only. This means that if you need to use it, you should
replace it as soon as possible with a road tire/wheel that is the same size
and type as the road tires and wheels that were originally provided by
Ford. If the dissimilar spare tire or wheel is damaged, it should be
replaced rather than repaired.
A dissimilar spare tire/wheel is defined as a spare tire and/or wheel that
is different in brand, size or appearance from the road tires and wheels
and can be one of three types:
1. T-type mini-spare: This spare tire begins with the letter “T” for tire
size and may have “Temporary Use Only” molded in the sidewall
2. Full-size dissimilar spare with label on wheel: This spare tire has
a label on the wheel that states: “THIS TIRE AND WHEEL FOR
TEMPORARY USE ONLY”
When driving with one of the dissimilar spare tires listed above, do not:
• Exceed 50 mph (80 km/h)
• Load the vehicle beyond maximum vehicle load rating listed on the
Safety Compliance Label
• Use snow chains on the end of the vehicle with the dissimilar spare
tire
• Use more than one dissimilar spare tire at a time
• Use commercial car washing equipment Roadside Emergencies
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Drive cautiously when using a full-size dissimilar spare tire/wheel and
seek service as soon as possible.
Spare tire information
Note: If your vehicle is equipped the tire pressure monitoring system
(TPMS), the system indicator light will illuminate when the spare is in
use. To restore the full functionality of the TPMS system, all road wheels
equipped with the tire pressure monitoring sensors must be mounted on
the vehicle.
If your vehicle is equipped with TPMS, have a flat tire serviced by an
authorized dealer in order to prevent damage to the TPMS sensor; refer
to Tire Pressure Monitoring System (TPMS) in the Tires, Wheel and
Loading chapter. Replace the spare tire with the road tire as soon as
possible.
Stopping and securing the vehicle
WARNING: To help prevent the vehicle from moving when you
change a tire, be sure the parking brake is set, then block (in
both directions) the wheel that is diagonally opposite to the tire being
changed.
Refer to the instruction sheet (located under the jack tool kit) for
detailed tire change instructions.
Park on a level surface, activate
hazard flashers and set the parking
brake.
• Automatic transmission: Place
gearshift lever in P (Park).
• Manual or electronic shift 4x4:
Place transfer case in 4H or 4L. Roadside Emergencies
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The following procedure is for vehicles equipped with a gasoline engine.
If your vehicle is equipped with a diesel engine, refer to the diesel
supplement.
Note: Do not start your engine with the air cleaner removed and do not
remove it while the engine is running.
Changing the air filter element
1. Locate the mass air flow sensor
electrical connector on the air outlet
tube. This connector will need to be
unplugged.
2. Reposition the locking clip on the
connector (connector shown from
below for clarity), squeeze the
connector and pull it off of the air
outlet tube.
3. Clean the area around the air
tube to air cover connection to
prevent debris from entering the
system and then loosen the bolt on
the air tube clamp so the clamp is
no longer snug to the air tube. It is
not necessary to completely remove
the clamp.
4. Pull the air tube off from the air
cleaner housing. Maintenance and Specifications
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USA (fus)