engine overheat FORD MUSTANG 2023 Owners Manual

Quick Action Menus
See Information Displays (page 98).
HORN
Press on the center of thesteering wheel near the horn iconto activate the horn.
SWITCHING THE HEATED
STEERING WHEEL ON AND OFF
(IF EQUIPPED)
Touch the button to switch theheated steering wheel on andoff.
Note:You can use the heated steeringwheel only when the engine is running.
Note:The system uses a sensor and isdesigned to control the temperature of thesteering wheel and to prevent it fromoverheating.
Note:In warm temperatures, the steeringwheel quickly reaches its maximumtemperature and the system reduces thecurrent to the heating element. This couldcause you to think that the system hasstopped working but it has not. This isnormal.
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingSteering WheelE248531 E270945 E256621

Cruise Control Indicator
It illuminates when you switchthe system on.
See Switching Cruise ControlOn and Off (page 184).
Direction Indicator
It illuminates when you switchon the left or right directionindicator or the hazard warningflasher. Flashes during operation. Anincrease in the rate of flashing warns of afailed indicator bulb.
Door Ajar Warning Lamp
Displays when the ignition is onand any door is not completelyclosed.
Engine Coolant TemperatureWarning Lamp
If it illuminates when your vehicleis moving, this indicates that theengine is overheating. Stop yourvehicle as soon as it is safe to do so andswitch the engine off. Have your vehiclechecked as soon as possible.
Fasten Seatbelt Warning Lamp
It illuminates and a chimesounds until you fasten theseatbelts.
Front Fog Lamp Indicator (If Equipped)
It illuminates when you switchthe front fog lamps on.
Headlamp High Beam Indicator
It illuminates when you switchthe high beam headlamps on. Itflashes when you use theheadlamp flasher.
Hood Ajar
It illuminates when the ignitionis on and you do not have thehood completely closed.
Lane Keeping System Lamp
Illuminates when the systemactivates.
Launch Control
Illuminates when this feature isready, including both slip controland engine RPM hold.
Illuminates when only engineRPM hold is active. See TrackUse (page 285).
Low Beam Malfunction
Lights when there is amalfunction with the low beamheadlamp bulb.
Low Fuel Level Warning Lamp
If it illuminates when you aredriving, refuel as soon aspossible.
Low Tire Pressure Warning Lamp
Illuminates when your tirepressure is low. If the lampremains on with the enginerunning or when driving, check your tirepressure as soon as possible.
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingInstrument ClusterE71340 E67018 E103308 E71880 E67019 E159324 E144813 E234583 E255688 E181350 E139232

Doors and Locks
ActionMessage
The driver door is not completely closed.Driver Door Ajar
The passenger door is not completely closed.Passenger DoorAjar
The trunk is not completely closed.Trunk Ajar
The hood is not completely closed.Hood Ajar
The system has disabled the door switches.Switches InhibitedSecurity Mode
Drive Control
ActionMessage
Indicates that one or more of the conditions required to changedrive modes has a fault. If issues persist see your authorized dealer.Drive Mode NotAvailable
Shift into drive (D) to select a valid drive mode.Shift to D to selecta Drive Mode
Electronic Stability Control
ActionMessage
The system detects a malfunction due to a blocked sensor.Service Advan-ceTrac
The status of the system after you switch it off.AdvanceTrac Off
The status of the system after you switch it on.AdvanceTrac On
The system is in sport mode.AdvanceTracSPORT MODE
Engine
ActionMessage
The engine is overheating and the power has been reduced to assistin lowering the temperature. Stop in a safe place as soon as it ispossible.
Power Reduced toLower EngineTemp
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingInformation Displays

cushion. This can cause the heated seatto overheat. Do not puncture the seatwith pins, needles or other pointedobjects. This damages the heatingelement and can cause the heated seatto overheat. An overheated seat maycause serious personal injury.
Note:Do not do the following:
•Place heavy objects on the seat.
•Operate the seat heater if water or anyother liquid spills on the seat. Allow theseat to dry thoroughly.
•Operate the heated seats unless theengine is running. Doing so can causethe battery to lose charge.
Press the heated seat symbol to cyclethrough the various heat settings and off.More indicator lights indicate warmersettings.
Cooled Seats
The cooled seats only function when theengine is running.
Press the cooled seat symbol to cyclethrough the various cool settings and off.More indicator lights indicate coolersettings.
If the engine falls below 350 RPM whilethe cooled seats are on, the feature turnsitself off. You will need to reactivate it.
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Use the brake shift interlock lever to movethe gearshift lever from the park (P)position in the event of an electricalmalfunction or if your vehicle has a deadbattery.
Apply the parking brake and switch theignition off before performing thisprocedure.
1.Using a flat head screwdriver or similartool, remove the chrome bezel andgearshift bracket at the base of thegearshift lever.
2.Locate the white release lever and slidethe lever forward when pulling thegearshift lever out of the park (P)position and into the neutral (N)position.
3.Reinstall the chrome bezel and thegearshift bracket.
4.Start your vehicle and release theparking brake.
Note:If you use this procedure, contact anauthorized dealer as soon as possible.
Note:For some markets, this feature isdisabled.
Automatic Transmission AdaptiveLearning
We design this feature to increasedurability and provide consistent shift feelover the life of your vehicle. A new vehicleor transmission may have firm or softshifts. This operation is normal and doesnot affect the function or durability of thetransmission. Over time, the adaptivelearning process fully updates transmissionoperation.
If Your Vehicle Gets Stuck in Mudor Snow
If your vehicle gets stuck in mud or snow,you could rock it out by shifting betweenforward and reverse gears, stoppingbetween shifts in a steady pattern. Presslightly on the accelerator in each gear.
Note:Do not rock your vehicle if the engineis not at normal operating temperature ordamage to the transmission could occur.
Note:Do not rock your vehicle for morethan a minute or damage to thetransmission and tires could occur, or theengine could overheat.
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingTransmissionE184747 E174501

When you press the accelerator pedal, youoverride the set speed and gap distance.
When you override the system,the green indicator lightilluminates and the vehicleimage does not appear in the informationdisplay.
The system resumes operation when yourelease the accelerator pedal. The vehiclespeed decreases to the set speed, or alower speed if following a slower vehicle.
Changing the Set Speed
Press and release the button toincrease the set speed in smallincrements. Press and hold thebutton to increase the set speed in largeincrements. Release the button when theset speed is equal to your desired speed.
Press and release the button todecrease the set speed in smallincrements. Press and hold thebutton to decrease the set speed in largeincrements. Release the button when theset speed is equal to your desired speed.
You can use the accelerator or brake pedalto adjust the set speed. Press either buttonto set the speed.
The system may apply the brakes to slowthe vehicle to the new set speed. The setspeed displays continuously in theinformation display when the system isactive.
Canceling the Set Speed
Press and release the button.The set speed does not erase.
Note:For vehicles with manualtransmission, if you press the clutch pedalfor an extended period, this action alsocancels the set speed.
Resuming the Set Speed
Press and release the button.Your vehicle speed returns to thepreviously set speed and gapsetting. The set speed displayscontinuously in the information displaywhen the system is active.
Note:Only use resume if you are aware ofthe set speed and intend to return to it.
Automatic Cancellation
The system does not operate below12 mph (20 km/h).
Note:If the engine speed drops too low, anaudible warning sounds and a messageappears in the information display.Automatic braking releases.
Hilly Condition Usage
Select a lower gear when the system isactive in situations such as prolongeddownhill driving on steep slopes, forexample in mountainous areas. Thesystem needs additional engine braking inthese situations to reduce the load on thevehicle’s regular brake system to preventit from overheating.
Note:An audible alarm sounds and thesystem shuts down if it applies brakes foran extended period of time. This allows thebrakes to cool. The system functionsnormally again after the brakes cool.
Switching Adaptive Cruise ControlOff
Press and release OFF, or on vehicles withspeed limiter, the speedometer icon whenthe system is in standby mode to switchthe system off.
Note:You erase the set speed and gapsetting when you switch the system off.
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When Towing a Trailer
•Do not drive faster than 70 mph(113 km/h) during the first 500 mi(800 km).
•Do not make full-throttle starts.
•Check your hitch, electrical connectionsand trailer wheel lug nuts thoroughlyafter you have traveled 50 mi (80 km).
•When stopped in congested or heavytraffic during hot weather, place thetransmission in park (P) or neutral (N)to aid engine and transmission coolingand to help air conditioningperformance.
•Switch off the speed control withheavy loads or in hilly terrain. Thespeed control may turn offautomatically when you are towing onlong, steep grades.
•Shift to a lower gear when driving downa long or steep hill. Do not apply thebrakes continuously, as they mayoverheat and become less effective.
•If your transmission is equipped with aGrade Assist or Tow/Haul feature, usethis feature when towing. This providesengine braking and helps eliminateexcessive transmission shifting foroptimum fuel economy andtransmission cooling.
•Allow more distance for stopping witha trailer attached. Anticipate stops andbrake gradually.
•Avoid parking on a slope. However, ifyou must park on a slope:
1.Turn the steering wheel to point yourvehicle tires away from traffic flow.
2.Set your vehicle parking brake.
3.Place the automatic transmission inpark (P) or manual transmission in alow gear.
4.Place wheel chocks in front and backof the trailer wheels. Chocks are notincluded with your vehicle.
Launching or Retrieving a Boat orPersonal Watercraft (PWC)
Note:Disconnect the wiring to the trailerbefore backing the trailer into the water.
Note:Reconnect the wiring to the trailerafter removing the trailer from the water.
When backing down a ramp during boatlaunching or retrieval:
•Do not allow the static water level torise above the bottom edge of the rearbumper.
•Do not allow waves to break higherthan 6 in (15 cm) above the bottomedge of the rear bumper.
Exceeding these limits may allow water toenter vehicle components:
•Causing internal damage to thecomponents.
•Affecting driveability, emissions, andreliability.
Any time the rear axle submerges in water,replace the rear axle lubricant. Water maycontaminate the rear axle lubricant, whichis not a normal maintenance inspectionitem unless there is a possibility of a leakor other axle repair is required.
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REDUCED ENGINE
PERFORMANCE
WARNING: If you continue to driveyour vehicle when the engine isoverheating, the engine could stopwithout warning. Failure to follow thisinstruction could result in the loss ofcontrol of your vehicle.
If the engine coolant temperature gaugeneedle moves to the upper limit position,the engine is overheating. See Gauges(page 90).
You must only drive your vehicle for a shortdistance if the engine overheats. Thedistance you can travel depends onambient temperature, vehicle load andterrain. The engine continues to operatewith limited power for a short period oftime.
If the engine temperature continues to rise,the fuel supply to the engine reduces. Theair conditioning switches off and the enginecooling fan operates continually.
1.Gradually reduce your speed and stopyour vehicle as soon as it is safe to doso.
2.Immediately switch the engine off toprevent severe engine damage.
3.Wait for the engine to cool down.
4.Check the coolant level. See EngineCoolant Check (page 265).
5.Have your vehicle checked as soon aspossible.
Reduced Vehicle Top Speed
Your vehicle's ability to reach and maintaintop speed is partially dependent uponambient temperature. Under certainenvironmental conditions, your vehicle'stop speed may be reduced to protectpowertrain components.
COLD WEATHER
PRECAUTIONS
The functional operation of somecomponents and systems can be affectedat temperatures below approximately-13°F (-25°C).
BREAKING-IN
Your vehicle requires a break-in period. Forthe first 1,000 mi (1,600 km), avoid drivingat high speeds, heavy braking, aggressiveshifting or using your vehicle to tow. Duringthis time, your vehicle may exhibit someunusual driving characteristics.
Ground Clearance
Since ground clearance is reduced, usecaution when approaching curbs or curbstops from the front and rear as vehicledamage may occur. Additionally, whencrossing speed bumps or driveway curbs,you should approach at a 45 degree angleto reduce the risk of vehicle damage.
DRIVING ECONOMICALLY
The following helps to improve fuelconsumption:
•Drive smoothly, accelerate gently andanticipate the road ahead to avoidheavy braking.
•Regularly check your tire pressures andmake sure that they are inflated to thecorrect pressure.
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingDriving Hints

WARNING: Do not remove thecoolant reservoir cap when the engine ison or the cooling system is hot. Wait 10minutes for the cooling system to cooldown. Cover the coolant reservoir capwith a thick cloth to prevent thepossibility of scalding and slowly removethe cap. Failure to follow this instructioncould result in personal injury.
WARNING: Do not put coolant inthe windshield washer reservoir. Ifsprayed on the windshield, coolant couldmake it difficult to see through thewindshield.
Note: Do not use stop leak pellets, coolingsystem sealants, or non-specified additivesas they can cause damage to the enginecooling or heating systems. Resultingcomponent damage may not be covered bythe vehicle Warranty.
Note:Automotive fluids are notinterchangeable.
It is very important to use predilutedcoolant approved to the correctspecification in order to avoid plugging thesmall passageways in the engine coolingsystem. See Capacities andSpecifications (page 337). Do not mixdifferent colors or types of coolant in yourvehicle. Mixing of engine coolants or usingan incorrect coolant may harm the engineor cooling system components and maynot be covered by the vehicle Warranty.
Note:If prediluted coolant is not available,use the approved concentrated coolantdiluting it to 50/50 with distilled water. SeeCapacities and Specifications (page 337).Using water that has not been deionisedmay contribute to deposit formation,corrosion and plugging of the small coolingsystem passageways.
Note: Coolants marketed for all makes andmodels may not be approved to ourspecifications and may cause damage tothe cooling system. Resulting componentdamage may not be covered by the vehicleWarranty.
If the coolant level is at or below theminimum mark, add prediluted coolantimmediately.
To top up the coolant level do thefollowing:
1.Unscrew the cap slowly. Any pressureescapes as you unscrew the cap.
2.Add prediluted coolant approved tothe correct specification. SeeCapacities and Specifications (page337).
3.Add enough prediluted coolant toreach the correct level.
4.Replace the coolant reservoir cap. Turnthe cap clockwise until it contacts thehard stop.
5.Check the coolant level in the coolantreservoir the next few times you driveyour vehicle. If necessary, add enoughprediluted engine coolant to bring thecoolant level to the correct level.
If you have to add more than 1.1 qt (1 L) ofengine coolant per month, have yourvehicle checked as soon as possible.Operating an engine with a low level ofcoolant can result in engine overheatingand possible engine damage.
In case of emergency, you can add a largeamount of water without engine coolantin order to reach a vehicle service location.In this instance, qualified personnel:
1.Must drain the cooling system.
2.Chemically clean the coolant system.
3.Refill with engine coolant as soon aspossible.
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingMaintenance

Water alone, without engine coolant, cancause engine damage from corrosion,overheating or freezing.
Do not use the following as a coolantsubstitute:
•Alcohol.
•Methanol.
•Brine.
•Any coolant mixed with alcohol ormethanol antifreeze.
Alcohol and other liquids can cause enginedamage from overheating or freezing.
Do not add extra inhibitors or additives tothe coolant. These can be harmful andcompromise the corrosion protection ofthe coolant.
Recycled Coolant
We do not recommend the use of recycledcoolant as an approved recycling processis not yet available.
Note:Dispose of used coolant in theappropriate manner.
Follow your community's regulations andstandards for recycling and disposing ofautomotive fluids.
Severe Climates
If you drive in extremely cold climates:
•It may be necessary to increase thecoolant concentration above 50%.
•A coolant concentration of 60%provides improved freeze pointprotection.
•Coolant concentrations above 60%decrease the overheat protectioncharacteristics of the coolant and maycause engine damage.
If you drive in extremely hot climates:
•You can decrease the coolantconcentration to 40%.
•A coolant concentration of 40%provides improved overheat protection.
•Coolant concentrations below 40%decrease the overheat and corrosionprotection characteristics of thecoolant and may cause enginedamage.
Vehicles driven year-round in non-extremeclimates should use prediluted coolant foroptimum cooling system and engineprotection.
Coolant Change
At specific mileage intervals, as listed inthe scheduled maintenance information,the coolant should be changed. Addprediluted coolant approved to the correctspecification. See Capacities andSpecifications (page 337).
Fail-Safe Cooling
Fail-safe cooling allows you to temporarilydrive your vehicle before any incrementalcomponent damage occurs. The fail-safedistance depends on ambienttemperature, vehicle load and terrain.
How Fail-Safe Cooling Works
If the engine begins to overheat,the coolant temperature gaugemoves toward the red zone:
A warning lamp illuminates anda message may appear in theinformation display.
If the engine reaches a presetover-temperature condition, the engineautomatically switches to alternatingcylinder operation. Each disabled cylinderacts as an air pump and cools the engine.
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