2011 FORD F150 brake

Power is supplied to all four wheels through a transfer case. On 4WD
vehicles, the transfer case allows you to select 4WD when necessary.
Information on transfer case operation and shifting procedures can be
found in this chapter. Information on transfer case maintenance can be
found in theMaintenance and Specificationschapter. You should
become thoroughly familiar with this information before you operate
your vehicle.
Normal characteristics
On some 4WD models, the initial shift from two-wheel drive to 4x4 while
the vehicle is moving can cause some momentary clunk and ratcheting
sounds. This is the front drivetrain coming up to speed and the
automatic locking hubs engaging and is not cause for concern.
Sand
When driving over sand, try to keep all four wheels on the most solid
area of the trail. Avoid reducing the tire pressures but shift to a lower
gear and drive steadily through the terrain. Apply the accelerator slowly
and avoid spinning the wheels.
Avoid excessive speed because vehicle momentum can work against you
and cause the vehicle to become stuck to the point that assistance may
be required from another vehicle. Remember, you may be able to back
out the way you came if you proceed with caution.
Mud and water
If you must drive through high
water, drive slowly. Traction or
brake capability may be limited.
When driving through water,
determine the depth; avoid water
higher than the bottom of the hubs
(if possible) and proceed slowly. If
the ignition system gets wet, the
vehicle may stall.
Once through water, always try the brakes. Wet brakes do not stop the
vehicle as effectively as dry brakes. Drying can be improved by moving
your vehicle slowly while applying light pressure on the brake pedal.
Be cautious of sudden changes in vehicle speed or direction when you
are driving in mud. Even 4WD vehicles can lose traction in slick mud. As
when you are driving over sand, apply the accelerator slowly and avoid
spinning your wheels. If the vehicle does slide, steer in the direction of
the slide until you regain control of the vehicle.
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Descend a hill in the same gear you
would use to climb up the hill to
avoid excessive brake application
and brake overheating. Do not
descend in neutral; instead,
disengage overdrive or manually
shift to a lower gear. When
descending a steep hill, avoid
sudden hard braking as you could
lose control. When you brake hard,
the front wheels can’t turn and if
they aren’t turning, you won’t be
able to steer. The front wheels have to be turning in order to steer the
vehicle. Rapid pumping of the brake pedal will help you slow the vehicle
and still maintain steering control.
If your vehicle has anti-lock brakes, apply the brakes steadily. Do not
“pump” the brakes.
Driving on snow and ice
4WD vehicles have advantages over 2WD vehicles in snow and ice but
can skid like any other vehicle.
Should you start to slide while driving on snowy or icy roads, turn the
steering wheel in the direction of the slide until you regain control.
Avoid sudden applications of power and quick changes of direction on
snow and ice. Apply the accelerator slowly and steadily when starting
from a full stop.
Avoid sudden braking as well. Although a 4WD vehicle may accelerate
better than a two-wheel drive vehicle in snow and ice, it won’t stop any
faster, because as in other vehicles, braking occurs at all four wheels. Do
not become overconfident as to road conditions.
Make sure you allow sufficient distance between you and other vehicles
for stopping. Drive slower than usual and consider using one of the lower
gears. In emergency stopping situations, apply the brake steadily. Do not
“pump” the brakes. Refer to theBrakessection of this chapter for
additional information on the operation of the Anti-lock Brake System
(ABS).
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DRIVING THROUGH WATER
If driving through deep or standing
water is unavoidable, proceed very
slowly especially when the depth is
not known. Never drive through
water that is higher than the bottom
of the wheel rims (for cars) or the
bottom of the hubs (for trucks).
When driving through water, traction or brake capability may be limited.
Also, water may enter your engine’s air intake and severely damage your
engine or your vehicle may stall.Driving through deep water where
the transmission vent tube is submerged may allow water into the
transmission and cause internal transmission damage.
Once through the water, always dry the brakes by moving your
vehicle slowly while applying light pressure on the brake pedal.
Wet brakes do not stop the vehicle as quickly as dry brakes.
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Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
9 10A Radio display, GPS module, Navigation
display
10 10A Run/accessory relay
11 10A Instrument cluster
12 15A Interior lighting, Puddle lamps,
Backlighting, Cargo lamp
13 15A Right turn signals/stop lamps
14 15A Left turn signals/stop lamps
15 15A Reverse lights, High-mounted stop lamp
16 10A Right low-beam headlamp
17 10A Left low-beam headlamp
18 10A Brake-shift interlock, Keypad
illumination, PCM wakeup, PATS
19 20A Audio amplifier
20 20A Power door locks
21 10A Ambient lighting
22 20A Horn
23 15A Steering wheel control module
24 15A Datalink connector, Steering wheel
control module
25 15A Not used (spare)
26 5A Radio frequency module
27 20A Not used (spare)
28 15A Ignition switch
29 20A Radio/Navigation
30 15A Front parking lamps
31 5A BOO – IP, BOO – Engine
32 15A Delay/accessory – moon roof, power
windows, locks, Automatic dimming
mirror/Compass
33 10A Heated seats
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Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
34 10A Reverse sensing system, 4x4 switch,
Rear video, Off road indicator (SVT
Raptor)
35 5A Hill descent switch (SVT Raptor)
36 10A Restraint control module, Occupant
classification system module
37 10A Trailer brake control
38 10A Delayed accessory – 110V power point,
Radio (AM/FM)
39 15A High beam headlamps
40 10A Rear park lamps
41 7.5A Passenger airbag deactivation indicator,
Upfitter switch (SVT Raptor)
42 5A Overdrive cancel switch
43 10A Not used (spare)
44 10A Not used (spare)
45 5A Not used (spare)
46 10A Climate controls module
47 15A Fog lamps, Exterior mirror turn signals
48 30A Circuit
BreakerPower rear windows, Power sliding back
window
49 Relay Delayed accessory
Power distribution box
The power distribution box is located in the engine compartment. The
power distribution box contains high-current fuses that protect your
vehicle’s main electrical systems from overloads.
WARNING:Always disconnect the battery before servicing high
current fuses.
WARNING:To reduce risk of electrical shock, always replace
the cover to the power distribution box before reconnecting the
battery or refilling fluid reservoirs.
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Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
14 30A** Passenger power seat
1540A** Electric fan
50A** Electric fan (6.2L with max trailer
tow, SVT Raptor)
16 — Not used
17 30A** Trailer brake control
18 30A** Upfitter 1 (SVT Raptor)
19 30A** Upfitter 2 (SVT Raptor)
20 20A** 4x4 module (electronic shift)
21 30A** TT battery charge relay power
22 20A** Cigar lighter
23 — A/C clutch relay
24 — Not used
25 — Vacuum pump relay (3.5L engine)
26 10A* PCM – keep alive power, PCM relay
coil, canister vent solenoid (3.7L,
5.0L and 6.2L engines)
27 20A* Fuel pump relay power
28 10A* Upfitter 4 (SVT Raptor)
29 10A* 4x4 IWE solenoid
30 10A* A/C clutch
31 15A* Run/start relay power
32 40A** Rear window defroster relay power
33 40A** 110V AC power point
34 40A** PCM relay power (3.7L, 5.0L and
6.2L engines)
50A** PCM relay power (3.5L engine)
35 — Not used
36 30A** Roll stability control (RSC)/Anti-lock
brake system (ABS)
37 — TT left stop/turn relay
38 — TT right stop/turn relay
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Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
39 — TT back-up lamps relay
40 — Electric fan relay
41 — Not used
42 5A* Run/start coil
43 15A* TT back-up lamp relay power
44 15A* Upfitter 3 (SVT Raptor)
45 10A* Alternator sensor (non-6.2L engines)
46 10A* Brake on/off (BOO) switch
47 60A** RSC/ABS module
48 20A** Moon roof
49 30A** Wipers
50 — Not used
51 40A** Blower motor relay power
52 5A* Run/start – Electronic power assist
steering, Blower relay coil
53 5A* Run/start – PCM
54 5A* Run/start – 4x4 module, Back-up
lamps, RSC/ABS, TT battery charge
relay coil, Rear window defroster
relay coil
55 — Not used
56 15A* Heated mirrors
57 — Not used
58 — Not used
59 — Not used
60 — Not used
61 — Not used
62 — Wiper motor relay
63 25A** Electric fan
64 40A** Vacuum pump relay power (3.5L
engine)
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Fuse/Relay
LocationFuse Amp
RatingProtected Circuits
82 — Not used
83 — Not used
84 — Not used
85 — Electric fan relay (low speed)
*Mini fuse **Cartridge fuse
Auxiliary relay box (SVT Raptor only)
The relay box is located in the left rear corner of the engine
compartment.
Fuse/Relay
locationFuse amp
ratingDescription
1 — Upfitter 1 relay
2 — Upfitter 2 relay
3 — Upfitter 3 relay
4 — Upfitter 4 relay
5 — Not used
6 — Not used
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.
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