check engine light FORD F SERIES MOTORHOME AND COMMERCIAL CHASSIS 2012 12.G Owners Manual

WARNING LIGHTS AND CHIMES
Warning lights and gauges can alert you to a vehicle condition that may
become serious enough to cause expensive repairs. A warning light may
illuminate when a problem exists with one of your vehicle’s functions.
Many lights will illuminate when you start your vehicle to make sure the
bulbs work. If any light remains on after starting the vehicle, refer to the
respective system warning light for additional information.
Service engine soon:The service
engine soon light illuminates when
the ignition is first turned to the on
position to check the bulb and to
indicate whether the vehicle is ready for inspection/maintenance (I/M)
testing. Normally, the service engine soon light will stay on until the
engine is cranked, then turn itself off if no malfunctions are present.
However, if after 15 seconds the service engine soon light blinks eight
times, it means that the vehicle is not ready for I/M testing. See the
Readiness for Inspection/Maintenance (I/M) testingin the
Maintenance and Specificationschapter.
Solid illumination after the engine is started indicates the on-board
diagnostics system (OBD-II) has detected a malfunction. Refer to
On-board diagnostics (OBD-II)in theMaintenance and Specifications
chapter. If the light is blinking, engine misfire is occurring which could
damage your catalytic converter. Drive in a moderate fashion (avoid
heavy acceleration and deceleration) and have your vehicle serviced
immediately by your authorized dealer.
WARNING:Under engine misfire conditions, excessive exhaust
temperatures could damage the catalytic converter, the fuel
system, interior floor coverings or other vehicle components, possibly
causing a fire with the result and risk of serious personal injury.
Instrument Cluster
10
2012 Motorhome(mot)
Supplement, 2nd Printing
USA(fus)

Electronic throttle control:
Illuminates when the engine has
defaulted to a “limp-home”
operation. See your authorized
dealer as soon as possible.
Brake system warning light:To
confirm the brake system warning
light is functional, it will
momentarily illuminate when the
ignition is turned to the on position
when the engine is not running, or in a position between on and start, or
by applying the parking brake when the ignition is turned to the on
position. If the brake system warning light does not illuminate at this
time, seek service immediately from your authorized dealer. Illumination
after releasing the parking brake indicates low brake fluid level and the
brake system should be inspected immediately by your authorized dealer.
WARNING:Driving a vehicle with the brake system warning
light on is dangerous. A significant decrease in braking
performance may occur. It will take you longer to stop the vehicle.
Have the vehicle checked by your authorized dealer. Driving extended
distances with the parking brake engaged can cause brake failure and
the risk of personal injury.
Brake reserve system warning (if equipped):Illuminates to indicate
normal hydromax booster reserve system activation when the engine is
off and the service brake pedal is applied.
This light may also illuminate
momentarily if the engine is running
and the driver turns the steering
wheel fully in one direction while
braking.
If the light remains on while the engine is running, this indicates
inadequate hydraulic booster pressure or reserve pump system failure.
Stop the vehicle as soon as possible and seek service immediately by
your authorized dealer.
P!
BRAKE
Instrument Cluster
11
2012 Motorhome(mot)
Supplement, 2nd Printing
USA(fus)

Anti-lock brake system:If the
ABS light stays illuminated or
continues to flash, a malfunction has
been detected, have the system
serviced immediately by your
authorized dealer. Normal braking is still functional unless the brake
warning light also is illuminated.
Safety belt (if equipped):
Reminds you to fasten your safety
belt. A Belt-Minderchime will also
sound to remind you to fasten your
safety belt.
Charging system:Illuminates when
the battery is not charging properly.
If it stays on while the engine is
running, there may be a malfunction
with the charging system. Contact your authorized dealer as soon as
possible. This indicates a problem with the electrical system or a related
component.
Transmission tow/haul feature:
Illuminates when the tow/haul
feature has been activated. Refer to
theDrivingchapter for
transmission function and operation. If the light flashes steadily, have the
system serviced immediately, damage to the transmission could occur.
Speed control:Illuminates when
the speed control is activated. Turns
off when the speed control system
is deactivated.
Turn signal:Illuminates when the
left or right turn signal or the
hazard lights are turned on. If the
indicators stay on or flash faster, check for a burned out bulb.
High beams:Illuminates when the
high beam headlamps are turned on.
ABS
Instrument Cluster
12
2012 Motorhome(mot)
Supplement, 2nd Printing
USA(fus)

WARNING:If you are driving down a long or steep hill, shift to
a lower gear. Do not apply your brakes continuously, as they may
overheat and become less effective.
Hydraulic brake booster system (Hydroboost or Hydromax)
The Hydroboost and Hydromax systems receive fluid pressure from the
power steering pump to provide power assist during braking.
The Hydromax booster receives backup pressure from the reserve
system electric pump whenever the fluid in the power steering system is
not flowing. When the engine is OFF, the pump will turn on if the brake
pedal is applied, or if the ignition is turned to the ON position.
The sound of the pump operating may be heard by the driver, but this is
a normal characteristic of the system.
The reserve system provides reduced braking power, so the vehicle
should be operated under these conditions with caution, and only to seek
service repair and remove the vehicle from the roadway.
For Hydromax-equipped vehicles operating under normal
conditions,the noise of the fluid flowing through the booster may be
heard whenever the brake is applied. This condition is normal. Vehicle
service is not required.
If braking performance or pedal response becomes very poor, even when
the pedal is strongly pressed, it may indicate the presence of air in the
hydraulic system or leakage of fluid. Stop the vehicle safely as soon as
possible and seek service immediately.
Anti-lock brake system (ABS)
On vehicles equipped with an anti-lock braking system (ABS), a noise
from the hydraulic pump motor and pulsation in the pedal may be
observed during ABS braking events. Pedal pulsation coupled with noise
while braking under panic conditions or on loose gravel, bumps, wet or
snowy roads is normal and indicates proper functioning of the vehicle’s
anti-lock brake system. The ABS performs a self-check after you start
the engine and begin to drive away. A brief mechanical noise may be
heard during this test. This is normal. If a malfunction is found, the ABS
warning light will come on. If the vehicle has continuous vibration or
shudder in the steering wheel while braking, the vehicle should be
inspected by an authorized dealer.
Driving
55
2012 Motorhome(mot)
Supplement, 2nd Printing
USA(fus)

•Do not use alcohol, methanol, brine or any engine coolants
mixed with alcohol or methanol antifreeze (coolant).Alcohol
and other liquids can cause engine damage from overheating or
freezing.
•Do not add extra inhibitors or additives to the coolant.These
can be harmful and compromise the corrosion protection of the engine
coolant.
For vehicles with overflow coolant systems with a non-pressurized cap
on the coolant recovery system, add coolant to the coolant recovery
reservoir when the engine is cool. Add the proper mixture of coolant and
distilled water to the FULL COLD level. For all other vehicles which have
a coolant degas system with a pressurized cap, or if it is necessary to
remove the coolant pressure relief cap on the radiator of a vehicle with
an overflow system, follow these steps to add engine coolant.
WARNING:To reduce the risk of personal injury, make sure the
engine is cool before unscrewing the coolant pressure relief cap.
The cooling system is under pressure; steam and hot liquid can come
out forcefully when the cap is loosened slightly.
Add the proper mixture of coolant and water to the cooling system by
following these steps:
1. Before you begin, turn the engine off and let it cool.
2. When the engine is cool, wrap a thick cloth around the coolant
pressure relief cap on the coolant reservoir (a translucent plastic bottle).
Slowly turn cap counterclockwise (left) until pressure begins to release.
3. Step back while the pressure releases.
4. When you are sure that all the pressure has been released, use the
cloth to turn it counterclockwise and remove the cap.
5. Fill the coolant reservoir slowly with the proper coolant mixture, to
within the FULL COLD level, or within the COLD FILL or MIN / MAX
range as listed on the engine coolant reservoir (depending upon
application). . If you removed the radiator cap in an overflow system, fill
the radiator until the coolant is visible and radiator is almost full.
6. Replace the cap. Turn until tightly installed. Cap must be tightly
installed to prevent coolant loss.
After any coolant has been added, check the coolant concentration (refer
toChecking engine coolant). If the concentration is not 50/50, drain
some coolant and adjust the concentration. It may take several drains
and additions to obtain a 50/50 coolant concentration.
Maintenance and Specifications
103
2012 Motorhome(mot)
Supplement, 2nd Printing
USA(fus)

•You may want to turn off the speed control in hilly terrain if
unnecessary shifting between the top gears occurs. Unnecessary
shifting of this type could result in reduced fuel economy.
•Warming up a vehicle on cold mornings is not required and may
reduce fuel economy.
•Resting your foot on the brake pedal while driving may reduce fuel
economy.
•Combine errands and minimize stop-and-go driving.
Maintenance
•Keep tires properly inflated and use only recommended size.
•Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
•Use recommended engine oil. Refer toMaintenance product
specifications and capacitiesin this chapter.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found inscheduled maintenance information.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (approximately
1 mpg [0.4 km/L] is lost for every 400 lb [180 kg] of weight carried).
•Adding certain accessories to your vehicle (for example bug
deflectors, rollbars/light bars, running boards, ski racks) may reduce
fuel economy.
•Using fuel blended with alcohol may lower fuel economy.
•Fuel economy may decrease with lower temperatures during the first
8–10 miles (12–16 km) of driving.
•Driving on flat terrain offers improved fuel economy as compared to
driving on hilly terrain.
•Transmissions give their best fuel economy when operated in the top
cruise gear and with steady pressure on the gas pedal.
•Close windows for high speed driving.
Maintenance and Specifications
113
2012 Motorhome(mot)
Supplement, 2nd Printing
USA(fus)

Body
•Wash vehicle thoroughly to remove dirt, grease, oil, tar or mud from
exterior surfaces, rear-wheel housing and underside of front fenders.
See theCleaningchapter for more information.
•Periodically wash vehicles stored in exposed locations.
•Touch-up raw or primed metal to prevent rust.
•Cover chrome and stainless steel parts with a thick coat of auto wax
to prevent discoloration. Re-wax as necessary when the vehicle is
washed. See theCleaningchapter for more information.
•Lubricate all hood, door and trunk lid hinges, and latches with a light
grade oil. See theCleaningchapter for more information.
•Cover interior trim to prevent fading.
•Keep all rubber parts free from oil and solvents.
Engine
•The engine oil and filter should be changed prior to storage, as used
engine oil contain contaminates that may cause engine damage.
•Start the engine every 15 days. Run at fast idle until it reaches normal
operating temperature.
•With your foot on the brake, shift through all the gears while the
engine is running.
Fuel system
•Fill the fuel tank with high-quality fuel until the first automatic shutoff
of the fuel pump nozzle.
Note:During extended periods of vehicle storage (30 days or more),
fuel may deteriorate due to oxidation. Add a quality gas stabilizer
product to the vehicle fuel system whenever actual or expected storage
periods exceed 30 days. Follow the instructions on the additive label.
The vehicle should then be operated at idle speed to circulate the
additive throughout the fuel system.
Cooling system
•Protect against freezing temperatures.
•When removing vehicle from storage, check coolant fluid level.
Confirm there are no cooling system leaks, and fluid is at the
recommended level.
Maintenance and Specifications
125
2012 Motorhome(mot)
Supplement, 2nd Printing
USA(fus)

one-stop service from routine maintenance like oil changes and tire
rotations to repairs like brake service, check out the value your dealers
can offer.
Owner checks and services
Certain basic maintenance checks and inspections should be performed by
the owner or a service technician at the intervals indicated. Service
information and supporting specifications are provided in this owner’s guide.
Any adverse condition should be brought to the attention of your dealer
or qualified service technician as soon as possible for the proper service
advice. The owner maintenance service checks are generally not covered
by warranties so you may be charged for labor, parts or fluids used.
Engine oil/coolant change intervals
Engine oil6 months or 7,500 miles (12,000 km)
(whichever comes first)
Engine coolant, initial
change6 years or 105,000 miles (168,000 km)
(whichever comes first)
Engine coolant, after
initial changeEvery 3 years or 45,000 miles (72,000 km)
Check every month
Engine oil level
Function of all interior and exterior lights
Tires for wear and proper pressure, including spare
Windshield washer fluid level
Check every six months
Battery connections; clean if necessary
Body and door drain holes for obstructions; clean if necessary
Cooling system fluid level and coolant strength
Door weatherstrips for wear; lubricate if necessary
Hinges/latches/outside locks for proper operation; lubricate if necessary
Parking brake for proper operation
Safety belts and seat latches for wear and function
Safety warning lamps (brake, ABS, airbag, safety belt) for operation
Washer spray/wiper operation; clean or replace blades as necessary
Scheduled Maintenance Guide
140
2012 Motorhome(mot)
Supplement, 2nd Printing
USA(fus)

A
ABS (see Brakes) .......................55
Air cleaner filter .......123–124, 127
Ambulance packages ....................5
Antifreeze
(see Engine coolant) ................101
Anti-lock brake system
(see Brakes) ..........................55–56
Automatic transmission
driving an automatic
overdrive ...................................60
fluid, adding ............................120
fluid, checking ........................120
fluid, refill capacities ..............128
fluid, specification ..................128
Axle
lubricant specifications ..........128
refill capacities ........................128
B
Battery .........................................98
acid, treating emergencies .......98
jumping a disabled battery ......80
maintenance-free ......................98
replacement, specifications ...127
servicing ....................................98
Brakes ....................................54–55
anti-lock ...............................55–56
anti-lock brake system (ABS)
warning light .............................56
fluid, checking and
adding ..............................118, 120
fluid, refill capacities ..............128
fluid, specifications .................128
lubricant specifications ..........128
shift interlock ............................58
Bulbs ............................................21
C
Capacities for refilling fluids ....128Cell phone use ..............................7
Changing a tire ...........................74
Cleaning your vehicle
engine compartment ................92
wheels ........................................92
Coolant
checking and adding ..............101
refill capacities ................104, 128
specifications ..........................128
Cruise control
(see Speed control) ....................23
Customer Assistance ..................64
Ford Extended Service
Plan ..................................134, 137
Getting assistance outside the
U.S. and Canada .......................88
Getting roadside assistance .....64
Getting the service you need ..85
Ordering additional owner’s
literature ...................................90
Utilizing the
Mediation/Arbitration
Program .....................................88
D
Daytime running lamps
(see Lamps) ................................20
Dipstick
automatic transmission
fluid ..........................................120
engine oil ...................................96
Driving under special
conditions ....................................62
through water ...........................63
E
Electronic message center .........16
Index
157
2012 Motorhome(mot)
Supplement, 2nd Printing
USA(fus)

Emergencies, roadside
jump-starting ............................80
Emergency Flashers ...................65
Emission control system ..........114
Engine ........................................131
cleaning .....................................92
coolant .....................................101
fail-safe cooling .......................105
idle speed control .....................98
lubrication specifications .......128
refill capacities ........................128
service points ......................94–95
Engine oil ....................................96
checking and adding ................96
dipstick ......................................96
filter, specifications ..........97, 127
recommendations .....................97
refill capacities ........................128
specifications ..........................128
Event data recording ....................5
Exhaust fumes ............................54
F
Fail safe cooling ........................105
Fluid capacities .........................128
Fuel ............................................107
calculating fuel economy .......111
capacity ...................................128
choosing the right fuel ...........109
detergent in fuel .....................110
filling your vehicle with
fuel ...................................107, 111
filter, specifications ........106, 127
improving fuel economy ........111
octane rating ...................109, 131
quality ......................................110
running out of fuel .................110
safety information relating to
automotive fuels .....................107Fuses ......................................66–67
G
Gas mileage
(see Fuel economy) .................111
Gauges .........................................13
H
Hazard flashers ...........................65
Headlamps ...................................20
daytime running lights .............20
flash to pass ..............................21
high beam .................................20
turning on and off ....................20
I
Ignition .................................51, 131
Inspection/maintenance (I/M)
testing ........................................115
Instrument panel
cluster ........................................10
lighting up panel and
interior .......................................21
J
Jump-starting your vehicle ........80
K
Keys
positions of the ignition ...........51
L
Lamps
daytime running light ...............20
headlamps .................................20
Index
158
2012 Motorhome(mot)
Supplement, 2nd Printing
USA(fus)