Protected ComponentFuse RatingFuse or RelayNumber
Right-hand high-intensity discharge head-lamps (GT500).20A335
Not used (base).—
Alternator sense.10A336
Not used.—37
Vehicle power 1.20A338
Not used.—39
Vehicle power 2.20A340
Fuel injectors.15A341
Vehicle power 3.15A342
Not used.—43
Vehicle power 4 (base).15A3
44Vehicle power 4 (GT500).30A3
Not used.—45
Differential pump (Mach 1, GT500).20A246
Not used (base).—
Not used.—47
Fuel pump #2 (GT500).30A248
Not used (base).—
Fuel pump.30A249
Steering column lock relay.—50
Not used.—51
Horn relay.—52
Cigar lighter.20A253
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingFuses
Protected ComponentFuse RatingFuse or RelayNumber
Auxiliary power point.20A254
Electronic fan 2 (base).25A255
Not used (GT500).—
Not used.—56
Air conditioning clutch relay.—57
Not used.—58
Exhaust valves relay.—59
Powertrain control module.5A360
Not used.—61
Anti-lock brakes run/start switch.5A362
Not used.—63
Electronic power assist steering.5A364
Not used.—65
Blind spot information system.
5A366Rear view camera.Rear window defroster relay coils.Vehicle dynamics module.
Not used.—67
Headlamp leveling switch (base).10A368
Signature lighting (GT500).10A3
Cigar lighter relay.—69Auxiliary power point relay.
Mass air flow sensor (base).5A374
Not used (GT500).—
Rain sensor module (base).5A375
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingFuses
Protected ComponentFuse RatingFuse or RelayNumber
Not used.—1
Power windows.10A2Electrochromic mirror.Power door locks.
Power mirrors (base).7.5A3Memory seats (base).
Not used (GT500).—
Not used (spare).20A4
Not used.—5
Not used (spare).10A6
Not used (spare).10A7
Telematic control unit - modem.5A8
Not used.5A9
Not used.—10
Not used.—11
Electronic control panel.7.5A12Gateway module.Gear shift module (GT500).
Steering column control module.7.5A13Instrument cluster.
Not used.15A14
SYNC.15A15Gauges.
Not used.—16
Headlamp leveling switch (base).7.5A17
Not used (GT500).—
Not used.7.5A18
Not used.5A19
Intrusion sensor module.5A20
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingFuses
Protected ComponentFuse RatingFuse or RelayNumber
In-vehicle temperature and humiditysensor.5A21
Auxiliary body module.5A22
Amplifier.30A23
Vehicle dynamics module.30A24
Ambient lighting module (base).20A25Auxiliary body module.
Right-hand front-window motor (powerdistribution module).30A26
Passenger door control unit.
Left-hand rear-window power (base).30A27
Not used (GT500).—
Right-hand rear-window power (base).30A28
Not used (GT500).—
Gateway module (base).15A29Not used (spare) (GT500).
Not used (spare)5A30
Remote keyless entry.10A31
Audio unit.20A32
Not used.—33
Run/start bus.30A34
Power distribution box run/start relay(base).5A35
Not used (GT500).—
Front camera (base).15A36
Not used (GT500).—
Heated steering wheel module (base).20A37
Not used (GT500).—
Note:Spare fuse amperage may vary.
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingFuses
When this occurs, your vehicle stilloperates, however:
•Engine power is limited.
•The air conditioning system turns off.
Continued operation increases the enginetemperature, causing the engine tocompletely shut down. Your steering andbraking effort increases in this situation.
When the engine temperature cools, youcan re-start the engine. Have your vehiclechecked as soon as possible to minimizeengine damage.
When Fail-Safe Mode Is Activated
WARNING: Fail-safe mode is foruse during emergencies only. Operateyour vehicle in fail-safe mode only aslong as necessary to bring your vehicleto rest in a safe location and seekimmediate repairs. When in fail-safemode, your vehicle will have limitedpower, will not be able to maintainhigh-speed operation, and maycompletely shut down without warning,potentially losing engine power, powersteering assist, and power brake assist,which may increase the possibility of acrash resulting in serious injury.
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.
Your vehicle has limited engine powerwhen in the fail-safe mode, drive yourvehicle with caution. Your vehicle does notmaintain high-speed operation and theengine may operate poorly.
Remember that the engine is capable ofautomatically shutting down to preventengine damage. In this situation:
1.Pull off the road as soon as safelypossible and switch the engine off.
2.If you are a member of a roadsideassistance program, we recommendthat you contact your roadsideassistance service provider.
3.If this is not possible, wait for a shortperiod of time for the engine to cool.
4.Check the coolant level. If the coolantlevel is at or below the minimum mark,add prediluted coolant immediately.
5.When the engine temperature cools,you can re-start the engine. Have yourvehicle checked as soon as possible tominimize engine damage.
Note:Driving your vehicle without repairincreases the chance of engine damage.
Engine Coolant TemperatureManagement (If Equipped)
WARNING: To reduce the risk ofcrash and injury, be prepared that thevehicle speed may reduce and thevehicle may not be able to acceleratewith full power until the coolanttemperature reduces.
If you tow a trailer with your vehicle, theengine may temporarily reach a highertemperature during severe operatingconditions, for example ascending a longor steep grade in high ambienttemperatures.
At this time, you may notice the coolanttemperature gauge moves toward the redzone and a message may appear in theinformation display.
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingMaintenance
1.Park your vehicle on a level surface.
2.Look at the brake fluid reservoir to seewhere the brake fluid level is relativeto the MIN and the MAX marks on thereservoir.
Note:If the brake fluid level is between theMIN and the MAX marks on the reservoir, itis acceptable.
Note:If the brake fluid level is below theMIN mark or above the MAX mark, haveyour vehicle checked as soon as possible.
Note:To avoid fluid contamination, thereservoir cap must remain in place and fullytight, unless you are adding fluid.
Only use fluid that meets ourspecifications. See Capacities andSpecifications (page 337).
Brake Fluid Service Interval
Brake fluid absorbs water over time whichdegrades the effectiveness of the brakefluid. Change the brake fluid at thespecified intervals to prevent degradedbraking performance.
For detailed interval information, seeScheduled Maintenance in your Owner'sManual or your local maintenance guide.
CLUTCH FLUID CHECK -
MANUAL TRANSMISSION
The clutch and brake systems share thesame fluid reservoir. See Brake FluidCheck (page 270).
POWER STEERING FLUID
CHECK
Your vehicle is equipped with an electricpower steering (EPS) system. There is nofluid reservoir to check or fill.
CHANGING THE 12V BATTERY
WARNING: Batteries normallyproduce explosive gases which cancause personal injury. Therefore, do notallow flames, sparks or lightedsubstances to come near the battery.When working near the battery, alwaysshield your face and protect your eyes.Always provide correct ventilation.
WARNING: When lifting aplastic-cased battery, excessive pressureon the end walls could cause acid to flowthrough the vent caps, resulting inpersonal injury and damage to thevehicle or battery. Lift the battery with abattery carrier or with your hands onopposite corners.
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingMaintenanceE170684
The battery warning lamp flashes threetimes to confirm that the reset issuccessful.
Battery Management System (If
Equipped)
The system monitors battery conditionsand takes actions to extend battery life. Ifexcessive battery drain is detected, thesystem temporarily disables someelectrical systems to protect the battery.
Systems included are:
•Heated rear window.
•Heated seats.
•Climate control.
•Heated steering wheel.
•Audio unit.
•Navigation system.
A message may appear in the informationdisplay to alert you that battery protectionactions are active. This message is only fornotification that an action is taking place,and not intended to indicate an electricalproblem or that the battery requiresreplacement.
After battery replacement, or in somecases after charging the battery with anexternal charger, the battery managementsystem requires eight hours of vehicle sleeptime to relearn the battery state of charge.During this time, your vehicle must remainfully locked with the ignition switched off.
Note:Prior to relearning the battery stateof charge, the battery management systemmay temporarily disable some electricalsystems.
Electrical Accessory Installation
To make sure the battery managementsystem works correctly, do not connect anelectrical device ground connectiondirectly to the battery negative post. Thiscan cause inaccurate measurements ofthe battery condition and potentialincorrect system operation.
Note:If you add electrical accessories orcomponents to the vehicle, it may adverselyaffect battery performance and durability.This may also affect the performance ofother electrical systems in the vehicle.
Remove and Reinstall the Battery
Install a battery approved for use by ourspecifications. See Capacities andSpecifications (page 337).
To disconnect or remove the battery, dothe following:
1.Apply the parking brake and switch theignition off.
2.Switch all electrical equipment off, forexample lights and radio.
3.Wait a minimum of two minutes beforedisconnecting the battery.
Note:The engine management system hasa power hold function and remains poweredfor a period of time after you switch theignition off. This is to allow the system tostore diagnostic and adaptive tables.Disconnecting the battery without waitingcan cause damage not covered by thevehicle warranty.
4.Disconnect the negative battery cableterminal.
5.Disconnect the positive battery cableterminal.
6.Remove the battery securing clamp.
7.Remove the battery.
8.To install, reverse the removalprocedure.
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingMaintenance
USING WINTER TIRES
Inflate the winter tires to the same tirepressures as those listed in the tirepressures table.
WARNING: Snow tires must be thesame size, load index and speed ratingas those originally provided by Ford. Useof any tire or wheel not recommendedby Ford can affect the safety andperformance of your vehicle, which couldresult in an increased risk of loss ofcontrol, vehicle rollover, personal injuryand death. Additionally, the use ofnon-recommended tires and wheels cancause steering, suspension, axle, transfercase or power transfer unit failure.Follow the Ford recommended tireinflation pressure found on the SafetyCompliance Certification Label (on thedoor hinge pillar, door latch post or thedoor edge that meets the door latchpost, next to the driver seat), or TireLabel on the B-Pillar or the edge of thedriver door. Failure to follow the tirepressure recommendations can causeuneven treadwear patterns andadversely affect the way your vehiclehandles.
USING SNOW CHAINS
WARNING: Aggressive driving inany road conditions can cause you tolose control of your vehicle increasingthe risk of severe personal injury orproperty damage. The traction controlactivating is an indication that at leastsome of the tires have exceeded theirability to grip the road; this may lead toan increased risk of loss of vehiclecontrol, vehicle rollover, personal injuryand death. If you experience a severeroad event,slow down.
The tires on your vehicle could haveall-weather treads to provide traction inrain and snow. In some climates you willneed to use snow tires and chains on yourvehicle in emergency situations or ifrequired by law.
Note:The suspension insulation andbumpers will help prevent vehicle damage.Do not remove these components from yourvehicle when using snow tires and chains.
Follow these guidelines when using snowtires and chains:
•When possible, avoid fully loading yourvehicle.
•Chains could damage aluminumwheels.
•Use ultra low profile cables, 10 mm orless in dimension as measured on thesidewall of your tire, with 235/55R 17,235/50R18 and 255/40R19 on the rearaxle only.
•Do not use snow chains or cables with265/40R19, 275/40R19, 305/30R19,315/30R19, and 265/35R20
•Not all S-class snow chains or cablesmeet these restrictions. Chains of thissize restriction will include a tensioningdevice.
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2023 Mustang (CZG) Canada/United States of America, Vehicles Built From: 14-11-2022, enUSA, Edition date: 202209, First-PrintingWheels and TiresE278852