2011 FORD MUSTANG check engine light

Service engine soon:The service
engine soon indicator 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 theReadiness for Inspection/Maintenance (I/M)
testingin theMaintenance and Specificationschapter.
Solid illumination after the engine is started indicates the On Board
Diagnostics System (OBD-II) has detected a malfunction. Refer toOn
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 contact your authorized dealer
as soon as possible.
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.
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, contact your authorized dealer as soon as possible. Illumination
after releasing the parking brake indicates low brake fluid level. Contact
your authorized dealer as soon as possible.
P!
BRAKE
Instrument Cluster
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Engine coolant temperature:
Illuminates when the engine coolant
temperature is high. Stop the
vehicle as soon as possible, switch off the engine and let cool. Refer to
Engine coolantin theMaintenance and Specificationschapter.
WARNING:Never remove the coolant reservoir cap while the
engine is running or hot.
Low tire pressure warning:
Illuminates when your tire pressure
is low. If the light remains on at
start up or while driving, the tire
pressure should be checked. Refer
toInflating your tiresin theTires, Wheels and Loadingchapter. When
the ignition is first turned to on, the light will illuminate for three
seconds to ensure the bulb is working. If the light does not turn on,
contact your authorized dealer as soon as possible. For more information
on this system, refer toTire pressure monitoring system (TPMS)in
theTires, Wheels and Loadingchapter.
AdvanceTrac
/traction control
active:Flashes when the traction
control is active. If the light remains
on a malfunction has been detected;
contact your authorized dealer as
soon as possible. Refer to theDrivingchapter for more information.
AdvanceTrac
/traction control
off light:Illuminates when the
traction control has been disabled
(by the driver or as a result of a
system failure). Refer to the
Drivingchapter for more
information.
Low fuel (if equipped):
Illuminates when the fuel level in
the fuel tank is at or near empty.
Refer toFuel gaugein this chapter.
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Speed control:Illuminates when
the speed control is engaged. Turns
off when the speed control system
is disengaged.
Door ajar:Illuminates when the
ignition is in the on position and any
of the doors or the hood/trunk are
open.
Anti-theft system:Flashes when
the SecuriLock
passive anti-theft
system has been activated.
Electronic throttle control:
Illuminates when the engine has
defaulted to a “limp-home”
operation. Contact your authorized
dealer as soon as possible.
Grade assist (if equipped):
Illuminates when the overdrive
function of the transmission has
been turned off and the grade assist
function has been turned on, refer
to theDrivingchapter.
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.
Key-in-ignition warning chime:Sounds when the key is left in the
ignition in the off or accessory position and the driver’s door is opened.
Headlamps on warning chime:Sounds when the headlamps or parking
lamps are on, the ignition is off (the key is not in the ignition) and the
driver’s door is opened.
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AUXILIARY POWER POINT (12V DC)
Power outlets are designed for accessory plugs only. Do not insert
any other object in the power outlet as this will damage the
outlet and blow the fuse. Do not hang any type of accessory or
accessory bracket from the plug. Improper use of the power
outlet can cause damage not covered by your warranty.
Auxiliary power points can be found in the following locations:
•On the instrument panel
•Inside the center console storage bin
Do not use the power point for operating the cigarette lighter element (if
equipped).
To prevent the fuse from being blown, do not use the power point(s)
over the vehicle capacity of 12VDC/180W/15A. If the power point or cigar
lighter socket is not working, a fuse may have blown. Refer toFuses and
relaysin theRoadside Emergencieschapter for information on
checking and replacing fuses.
To have full capacity usage of your power point, the engine is required to
be running to avoid unintentional discharge of the battery. To prevent
the battery from being discharged:
•do not use the power point longer than necessary when the engine is
not running,
•do not leave battery chargers, video game adapters, computers and
other devices plugged in overnight or when the vehicle is parked for
extended periods.
Always keep the power point caps closed when not being used.
POWER WINDOWS
WARNING:Do not leave children unattended in the vehicle and
do not let children play with the power windows. They may
seriously injure themselves.
WARNING:When closing the power windows, you should verify
they are free of obstructions and ensure that children and/or
pets are not in the proximity of the window openings.
Driver Controls
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•Be sure that areas where the vehicle is parked are clean and clear of
all combustibles such as petroleum products, dust, rags, paper and
similar items.
•Be sure that the engine block heater, heater cord and extension cord
are solidly connected. A poor connection can cause the cord to
become very hot and may result in an electrical shock or fire. Be sure
to check for heat anywhere in the electrical hookup once the system
has been operating for approximately a half hour.
•Finally, have the engine block heater system checked during your fall
tune-up to be sure it’s in good working order.
How to use the engine block heater
Ensure the receptacle terminals are clean and dry prior to use. To clean
them, use a dry cloth.
Depending on the type of factory installed equipment, your engine block
heater will use .4 to 1.0 kilowatt-hours of energy per hour of use. Your
factory installed block heater system does not have a thermostat;
however, maximum temperature is attained after approximately three
hours of operation. Block heater operation longer than three hours will
not improve system performance and will unnecessarily use additional
electricity.
Make sure system is unplugged and properly stowed before driving the
vehicle. While not in use, make sure the protective cover seals the
prongs of the engine block heater cord plug.
BRAKES
Occasional brake noise is normal. If a metal-to-metal, continuous grinding
or continuous squeal sound is present, the brake linings may be worn-out
and should be inspected by an authorized dealer. If the vehicle has
continuous vibration or shudder in the steering wheel while braking, the
vehicle should be inspected by an authorized dealer.
Refer toWarning lights and
chimesin theInstrument Cluster
chapter for information on the brake
system warning light.
P!
BRAKE
Driving
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WARNING:Remember that even advanced technology cannot
defy the laws of physics. It’s always possible to lose control of a
vehicle due to inappropriate driver input for the conditions. Aggressive
driving on any road condition can cause you to lose control of your
vehicle increasing the risk of personal injury or property damage.
Activation of the AdvanceTrac
system is an indication that at least
some of the tires have exceeded their ability to grip the road; this
could reduce the operator’s ability to control the vehicle potentially
resulting in a loss of vehicle control, vehicle rollover, personal injury
and death. If your AdvanceTrac
system activates, SLOW DOWN.
WARNING:If a failure has been detected within the
AdvanceTrac
system, the stability control light and the stability
control off light will illuminate steadily. If the stability control light and
the stability control off light illuminate steadily, contact your
authorized dealer as soon as possible to have the system serviced
immediately. Operating your vehicle with AdvanceTrac
disabled could
lead to an increased risk of loss of vehicle control, vehicle rollover,
personal injury and death.
The AdvanceTrac
system automatically enables each time the engine is
started. All features of the AdvanceTrac
system (TCS and ESC) are
active and monitor the vehicle from start-up. However, the system will
only intervene if the driving situation requires it.
The AdvanceTrac
system includes
a stability control button on the
center console, a stability control
light and a stability control off light
in the instrument cluster. Both the
stability control light and the
stability control off light in the
instrument cluster will illuminate
temporarily during start-up as part of a normal system self-check. The
stability control light may illuminate (flash) during certain driving
situations which cause the AdvanceTrac
system to operate. If the
stability control light and the stability control off light illuminate steadily,
contact your authorized dealer as soon as possible to have the system
serviced immediately. If equipped with a message center, the vehicle will
also indicate a failure with the AdvanceTrac
system.
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When AdvanceTrac
performs a normal system self-check, some drivers
may notice a slight movement of the brake, and/or a rumble, grunting, or
grinding noise after startup and when driving off.
When an event occurs that activates AdvanceTrac
you may experience
the following:
•A slight deceleration of the vehicle
•The stability control light will flash.
•A vibration in the pedal when your foot is on the brake pedal
•If the driving condition is severe and your foot is not on the brake, the
brake pedal may move as the systems applies higher brake forces. You
may also hear a whoosh of air from under the instrument panel during
this severe condition.
•The brake pedal may feel stiffer than usual.
Traction control system (TCS)
Traction control is a driver aid feature that helps your vehicle maintain
traction of the wheels, typically when driving on slippery and/or hilly
road surfaces, by detecting and controlling wheel spin.
Excessive wheel spin is controlled in two ways, which may work
separately or in tandem, engine traction control and brake traction
control. Engine traction control works to limit drive-wheel spin by
momentarily reducing engine power. Brake traction control works to limit
wheel spin by momentarily applying the brakes to the wheel that is
slipping. Traction control is most active at low speeds.
During TCS events, the stability control light in the instrument cluster
will flash.
If the TCS is activated excessively in a short period of time, the braking
portion of the system may become temporarily disabled to allow the
brakes to cool down. In this situation, the TCS will use only engine
power reduction or transfer to help control the wheels from
over-spinning. When the brakes have cooled down, the system will regain
all features. Anti-lock braking, and ESC are not affected by this condition
and will continue to function during the cool-down period.
The engine traction control and brake traction control system may be
deactivated in certain situations. See theSwitching off AdvanceTrac

section below.
If you should become stuck in snow or ice or on a very slippery road
surface, try switching the TCS off. This may allow excess wheel spin to
“dig” the vehicle out and enable a successful “rocking” maneuver.
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When features of the AdvanceTrac

system are off, the stability control
off light will illuminate steadily.
Pressing the stability control button
again will turn off the stability
control off light.
In R (Reverse), ABS and the engine traction control and brake traction
control features will continue to function; however, ESC is disabled.
AdvanceTrac
Features
Button
functionsMode
icon
statusESC TCS
Default at
start-upOn during
bulb
checkEnabled Enabled
Button pressed
momentarilyTraction
control offOn Enabled Disabled
Button pressed
twice; brakes
appliedSport mode (if
equipped)On Enabled Enabled
Button pressed
and held more
than 5 seconds;
brakes applied;
no throttleAdvanceTrac

DisabledOn Disabled Disabled
Button pressed
again after
deactivationAdvanceTrac

fully enabledOff Enabled Enabled
AdvanceTrac
Sport Mode (if equipped)
The AdvanceTrac
system provides an available sport mode on some
models. This can be selected utilizing the stability off button as shown in
the table above.
Sport mode is not intended for use on public roadways as this mode
provides less AdvanceTrac
system intervention than when the default
ESC and traction control systems are on. Sport mode will allow more
spirited driving while the AdvanceTrac
system is still enabled.
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