Protected ComponentFuse RatingFuse or RelayNumber
Right low beam headlamp.10AF7
Daytime running lamps relays.5AF8
Left low beam headlamp.10AF9
Transmission control switch.10AF10
Cluster battery (+12V) #1.10AF11
Not used.—F12
Cluster battery (+12V) #2.10AF13
Switch illumination.10AF14Instrument cluster lighting.
Body builder battery (+12V) feed.20AF15
Not used.—F16
Trailer tow direction indicators.20AF17Trailer tow stop lamps.Trailer tow hazard lamps.
Body builder off/run.10AF18
Trailer brake control module brake on/offsignal.10AF19
Body builder brake lamps.Left/right brake lamps.
Body builder run/accessory feed.10AF20
Anti-lock brake system module.10AF21Hydroboost.Instrument cluster.
Wiper/washer module.30AF22Wiper feed.
Reverse lamps.10AF23
Body builder radio feed.5AF24
Trailer tow reverse lamps.10AF25
Cluster run/accessory.10AF26
High beam indicator.20AF27
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GENERAL INFORMATION
Have your vehicle serviced regularly to helpmaintain its roadworthiness and resalevalue. There is a large network ofauthorized dealers that are there to helpyou with their professional servicingexpertise. We believe that their speciallytrained technicians are best qualified toservice your vehicle properly and expertly.They are supported by a wide range ofhighly specialized tools developedspecifically for servicing your vehicle.
If your vehicle requires professional service,an authorized dealer can provide thenecessary parts and service. Check yourwarranty information to find out whichparts and services are covered.
Use only recommended fuels, lubricants,fluids and service parts conforming tospecifications. Motorcraft® parts aredesigned and built to provide the bestperformance in your vehicle.
Precautions
•Do not work on a hot engine.
•Make sure that nothing gets caught inmoving parts.
•Do not work on a vehicle with theengine running in an enclosed space,unless you are sure you have enoughventilation.
•Keep all open flames and other burningmaterial (such as cigarettes) awayfrom the battery and all fuel relatedparts.
Working with the Engine Off
1.Set the parking brake and shift thetransmission to park (P).
2.Switch off the engine.
3.Block the wheels.
Working with the Engine On
WARNING: To reduce the risk ofvehicle damage and personal burninjuries, do not start your engine with theair cleaner removed and do not removeit while the engine is running.
1.Set the parking brake and shift thetransmission to park (P).
2.Block the wheels.
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UNDER HOOD OVERVIEW - COMMERCIAL CHASSIS
Engine coolant reservoir. See Engine Coolant Check (page 96).A
Engine oil filler cap. See Engine Oil Check (page 95).B
Automatic transmission fluid dipstick. See Automatic Transmission FluidCheck (page 101).C
Engine compartment fuse box. See Fuses (page 71).D
Engine oil dipstick. See Engine Oil Dipstick (page 95).E
Air filter assembly. See Changing the Engine Air Filter (page 107).F
Power steering fluid reservoir. See Power Steering Fluid Check (page 104).G
Brake fluid reservoir. See Brake Fluid Check (page 102).H
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UNDER HOOD OVERVIEW - MOTORHOME CHASSIS
Engine coolant reservoir. See Engine Coolant Check (page 96).A
Engine oil filler cap. See Engine Oil Check (page 95).B
Automatic transmission fluid dipstick. See Automatic Transmission FluidCheck (page 101).C
Engine compartment fuse box. See Fuses (page 71).D
Air filter assembly. See Changing the Engine Air Filter (page 107).E
Engine oil dipstick. See Engine Oil Dipstick (page 95).F
Power steering fluid reservoir. See Power Steering Fluid Check (page 104).G
Brake fluid reservoir. See Brake Fluid Check (page 102).H
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ENGINE OIL DIPSTICK
MINA
MAXB
ENGINE OIL CHECK
To check the engine oil level consistentlyand accurately, do the following:
1.Make sure the parking brake is on. Makesure the transmission is in park (P) orneutral (N).
2.Run the engine until it reaches normaloperating temperature.
3.Make sure that your vehicle is on levelground.
4.Switch the engine off and wait 15minutes for the oil to drain into the oilpan. Checking the engine oil level toosoon after you switch the engine offmay result in an inaccurate reading.
5.Open the hood.
6.Remove the dipstick and wipe it witha clean, lint-free cloth. See UnderHood Overview (page 93).
7.Reinstall the dipstick and remove itagain to check the oil level. See UnderHood Overview (page 93).
8.Make sure that the oil level is betweenthe maximum and minimum marks. Ifthe oil level is at the minimum mark,add oil immediately. See Capacitiesand Specifications (page 138).
9.If the oil level is correct, replace thedipstick and make sure it is fully seated.
Note:Do not remove the dipstick when theengine is running.
Note: If the oil level is between themaximum and minimum marks, the oil levelis acceptable. Do not add oil.
Note:The oil consumption of new enginesreaches its normal level after approximately3,000 mi (5,000 km).
Adding Engine Oil
WARNING: Do not remove thefiller cap when the engine is running.
Do not use supplemental engine oiladditives because they are unnecessaryand could lead to engine damage that maynot be covered by the vehicle Warranty.
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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 a shortperiod 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.
You may notice a reduction in vehiclespeed caused by reduced engine power inorder to manage the engine coolanttemperature. Your vehicle may enter thismode if certain high-temperature andhigh-load conditions take place. Theamount of speed reduction depends onvehicle loading, grade and ambienttemperature. If this occurs, there is no needto pull off the road, you can continue todrive your vehicle.
The air conditioning may automaticallyturn on and off during severe operatingconditions to protect the engine fromoverheating. When the coolanttemperature decreases to the normaloperating temperature, the air conditioningturns on.
If the coolant temperature gauge movesfully into the red zone, or if the coolanttemperature warning or service enginesoon messages appear in your informationdisplay, do the following:
1.Pull off the road as soon as safelypossible and shift the transmission intopark (P).
2.Leave the engine running until thecoolant temperature gauge needlereturns to the normal position. Afterseveral minutes, if the temperaturedoes not drop, follow the remainingsteps.
3.Switch the engine off and wait for it tocool. Check the coolant level.
4.If the coolant level is at or below theminimum mark, add prediluted coolantimmediately.
5.If the coolant level is normal, restartthe engine and continue.
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AUTOMATIC TRANSMISSION
FLUID CHECK
WARNING: The dipstick andsurrounding components are hot. Usegloves when moving components andchecking the transmission fluid level.Failure to follow this warning could resultin serious personal injury.
Note:Automatic transmission fluidexpands when warmed. To obtain anaccurate fluid check, drive the vehicle untilit is at normal operating temperature(approximately 20 mi (30 km)). If yourvehicle has been operated for an extendedperiod at high speeds, in city traffic duringhot weather or pulling a trailer, the vehicleshould be turned off for about 30 minutesto allow fluid to cool to normal operatingtemperature 196°F - 215°F (91°C - 102°C)before checking.
Refer to your scheduled maintenanceinformation for scheduled intervals for fluidchecks and changes.
Your transmission does not consume fluid.However, the fluid level should be checkedif the transmission is not working properly,(i.e., if the transmission slips or shiftsslowly) or if you notice some sign of fluidleakage. To check the fluid level:
1.Drive the vehicle 20 mi (30 km) or untilit reaches normal operatingtemperature
2.Park the vehicle on a level surface andengage the parking brake
3.With the engine running, parking brakeengaged and your foot on the brakepedal, move the gearshift lever throughall of the gear ranges. Allow sufficienttime for each gear to engage
4.Latch the gearshift lever in P (Park)and leave the engine running.
5.Remove the dipstick, wiping it cleanwith a clean, dry lint free rag. Ifnecessary, refer to Under HoodOverview in this chapter for thelocation of the dipstick.
6.Install the dipstick making sure it is fullyseated in the filler tube.
7.Remove the dipstick and inspect thefluid level. The fluid should be in thedesignated area for normal operatingtemperature or ambient temperature.
Do not use supplemental transmissionfluid additives, treatments or cleaningagents. The use of these materials mayaffect transmission operation and resultin damage to internal transmissioncomponents.
Low fluid level
Do not drive the vehicle if there is noindication of fluid on the dipstick and theambient temperature is above 50°F(10°C).
Correct fluid level
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The transmission fluid should be in thisrange if at normal operating temperature196°F - 215°F (91°C - 102°C).
The transmission fluid should be checkedat normal operating temperature 196°F -215°F (91°C - 102°C) on a level surface.The normal operating temperature can bereached after approximately 20 mi(30 km) of driving. You can check the fluidwithout driving if the ambient temperatureis above 50°F (10°C). However, if fluid isadded at this time, an overfill conditioncould result when the vehicle reachesnormal operating temperature
High fluid level
Fluid levels above the safe range mayresult in transmission failure. An overfillcondition of transmission fluid may causeshift and/or engagement concerns and/orpossible damage. High fluid levels can becaused by an overheating condition.
Adjusting automatic transmissionfluid levels
Note:Use of a non-approved automatictransmission fluid may cause internaltransmission damage. Before adding anyfluid, make sure the correct type is used. Thetype of fluid used is normally indicated onthe transmission dipstick and also in theSee Capacities and Specifications (page134).
Add fluid in ½ pint (250 ml) incrementsthrough the filler tube until the level iscorrect.
Note:If an overfill occurs, excess fluidshould be removed by an authorized dealer.An overfill condition of transmission fluidmay cause shift and/or engagementconcerns and/or possible damage.
Do not use supplemental transmissionfluid additives, treatments or cleaningagents. The use of these materials mayaffect transmission operation and resultin damage to internal transmissioncomponents.
Automatic transmission fluid filter
The TorqShift6™ automatic transmissionis equipped with a serviceable transmissionfluid filter located inside the transmissionbottom pan. Refer to the scheduledmaintenance information for serviceintervals for the automatic transmissionfluid and transmission filter. Fortransmission filter maintenance, see yourauthorized dealer.
BRAKE FLUID CHECK
Fluid levels between the MIN and MAXlines are within the normal operating range;there is no need to add fluid. If the fluidlevels are outside of the normal operatingrange, the performance of the systemcould be compromised; seek service fromyour authorized dealer immediately.
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