2012 FORD SUPER DUTY warning lights

•auto-manual hub locks can be
manually overridden by rotating
the hub lock control from AUTO
to LOCK if desired.
•automatic operation of the
hub locks is recommended,and
will increase fuel economy
•For proper operation, make
sure that each hub is fully
engaged and that both hub
locks are set to the same position (both set to LOCK or both
set to AUTO). To engage LOCK, turn the hub locks completely
clockwise; to engage AUTO, turn the hub locks completely
counterclockwise.
4WD system indicator lights
The indicator lights illuminate in the message center in the
reconfigurable telltale (RTT) under the following conditions. Refer to
Warning lights and chimesin theInstrument Clusterchapter.
•4X2- Momentarily illuminates
when 2H is selected on electronic
shift 4WD systems only.
•4X4 HIGH- Illuminates when 4H
(4x4 High) is engaged.
•4X4 LOW- Illuminates when 4L
(4x4 Low) is engaged.
•CHECK 4X4– Displays when a
4x4 system fault is present
Using a Manual Shift On Stop (MSOS) 4x4 system (if equipped)
Note: High shift efforts may be encountered when attempting to
shift into and out of 4x4 modes. It is recommended to allow the
vehicle to roll at a speed below 3 mph (5 km/h) when shifting
between modes.
4x2
4x4
HIGH
4x4
LOW
Driving
306
2012 F-250/350/450/550(f23)
Owners Guide, 1st Printing
USA(fus)

Many of the world’s automakers approved the World-Wide Fuel Charter
that recommends gasoline specifications to provide improved
performance and emission control system protection for your vehicle.
Gasolines that meet the World-Wide Fuel Charter should be used when
available. Ask your fuel supplier about gasolines that meet the
World-Wide Fuel Charter.
Diesel engine (if equipped)
Refer to the diesel supplement for information regarding diesel fuel
recommendations and requirements of your diesel-powered truck.
Cleaner air
Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality, per the recommendations in theChoosing the right
fuelsection.
Running out of fuel
Avoid running out of fuel because this situation may have an adverse
effect on powertrain components.
If you have run out of fuel:
•You may need to cycle the ignition from off to on several times after
refueling to allow the fuel system to pump the fuel from the tank to
the engine. On restarting, cranking time will take a few seconds longer
than normal.
•Normally, adding 1 gallon (3.8L) of fuel is enough to restart the
engine. If the vehicle is out of fuel and on a steep grade, more than
1 gallon (3.8L) may be required.
•The service engine soon
indicator may come on. For more
information on the service engine soon
indicator, refer to
Warning lights and chimesin theInstrument Clusterchapter.
ESSENTIALS OF GOOD FUEL ECONOMY
Measuring techniques
Your best source of information about actual fuel economy is you, the
driver. You must gather information as accurately and consistently as
possible. Fuel expense, frequency of fill-ups or fuel gauge readings are
NOT accurate as a measure of fuel economy. We do not recommend
taking fuel economy measurements during the first 1,000 miles
(1,600 km) of driving (engine break-in period). You will get a more
accurate measurement after 2,000 miles–3,000 miles (3,000 km–5,000
km).
Maintenance and Specifications
396
2012 F-250/350/450/550(f23)
Owners Guide, 1st Printing
USA(fus)

Inspection/maintenance (I/M)
testing ........................................401
Instrument panel
cleaning ...........................369–370
cluster ........................................14
lighting up panel and
interior .......................................91
J
Jack ............................................334
positioning ...............................334
storage .....................................334
Jump-starting your vehicle ......351
K
Keyless entry system
autolock ...................................141
keypad .....................................152
locking and unlocking doors ..153
programming entry code .......152
Keys ...................................133, 154
positions of the ignition .........269
L
Lamps
autolamp system .......................89
daytime running light ...............91
fog lamps ...................................90
headlamps .................................89
headlamps, flash to pass ..........90
instrument panel, dimming .....91
interior lamps ...........................93
replacing bulbs .............95, 97–99
LATCH anchors .........................210
Lights, warning and indicator ....14
anti-lock brakes (ABS) ..........276
Loading instructions .................255Load limits .................................248
Locks
autolock ...................................141
childproof ................................145
doors ........................................141
Lug nuts ....................................350
Lumbar support, seats .............164
M
Manual transmission
fluid capacities ........................414
Message center ...............22–23, 40
english/metric button ...............28
system check button
................28
warning messages
...............29, 48
Mirrors
...............................108–109
automatic dimming rearview
mirror
......................................108
fold away
.................109, 111–112
heated
........................................83
programmable memory
..........147
side view mirrors (power)
.....109
signal
.......................................112
Moon roof
..................................118
Motorcraftparts
......................413
MyKey
........................................133
N
Navigation system
.......................79
O
Octane rating
....................394–395
Oil (see Engine oil)
..................379
Index
451
2012 F-250/350/450/550(f23)
Owners Guide, 1st Printing
USA(fus)

Ventilating your vehicle ...........273
W
Warning lights (see Lights) .......14
Washer fluid ..............................378
Water, Driving through .............318Windows
power .......................................105
Windshield washer fluid and
wipers ........................................100
checking and adding fluid .....378
replacing wiper blades ...........378
Wrecker towing .........................355
Index
454
2012 F-250/350/450/550(f23)
Owners Guide, 1st Printing
USA(fus)