2021 FORD SUPER DUTY ECO mode

Action
Message
The system automatically turns off and displays this messagewhen you connect a trailer to the vehicle that does not have
a trailer blind spot system or when you switch the trailer blind spot system off through the information display. See Blind
Spot Information System (page 254).
Cross Traffic Alert Deac-
tivated Trailer Attached
The system automatically turns off and displays this messagewhen you connect a trailer to the vehicle that does not have
a trailer blind spot system or when you switch the trailer blind spot system off through the information display. See
Blind
Spot Information System (page 254).
Blind Spot Alert Deactiv-
ated Trailer Attached
Displays when the trailer connected is a fifth wheel or goose-neck, or when the trailer width is wider than
10 ft (2.7 m) or
longer than 33 ft (10 m).
Trailer Blind Spot Not
available Due to Invalid Trailer
Diesel Messages WARNING:
When the Exhaust
Filter Cleaning message appears in the
information display, do not park near
flammable materials, vapors or
structures until filter cleaning is
complete. Action
Message
Your vehicle has entered the cleaning mode. Various engine
actions raises the exhaust temperature in the Diesel Particu- late Filter system to burn off the particles (exhaust soot).
After the vehicle burns the particles off, the exhaust temper- ature returns to normal levels. This message is NORMAL.
Exhaust Filter Cleaning
The diesel particulate filter is full of particles (exhaust soot)
and you are not operating the vehicle in a manner that allows normal cleaning. Drive the vehicle above
30 mph (48 km/h)
until the message turns off.
Exhaust Filter Over-
loaded Drive to Clean
Exhaust Filter Over-loaded Clean Now
The diesel particulate filter is full of particles (exhaust soot)
and you are not operating the vehicle in a manner that allows normal cleaning. Drive the vehicle above
30 mph (48 km/h)
until the message turns off.
Exhaust Filter at Limit
Clean Now
Exhaust Filter at Limit Drive to Clean Now
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Action
Message
Your vehicle exhaust system temperature exceeded theintended operating range. If this warning occurs, a tone
sounds, followed by reduced engine power. The engine shuts
down when your vehicle speed is below 3 mph (5 km/h) . Stop the vehicle as soon as safely possible. Have the system checked by an authorized dealer.
Exhaust System Over-
heated Stop Safely NOW
In extremely cold weather, typically below -15°F (-26°C) andif the engine block heater is not utilized, your engine will not
respond to accelerator pedal movement for 30 seconds. This restriction allows your engine to properly circulate the oil to avoid engine damage.
Engine Warming Please
Wait {seconds:00} sec
Your diesel particulate filter is clean.
Exhaust Filter Drive
Complete
Your diesel particulate filter is clean (OCR Only).
Exhaust Filter Cleaned
The manual regeneration process has stopped (OCR Only).
Exhaust Filter Cleaning
Stopped
The distance you can travel before depleting the remaining diesel exhaust fluid.
DEF Level Range: XX mi/
km Refill Now
Your diesel exhaust fluid is nearing empty. Your vehicle ’s top
speed will become limited in the displayed distance. You must
replenish the diesel exhaust fluid to resume normal operation
of your vehicle. See Selective Catalytic Reductant System (page 197).
DEF Level Empty Speed
Limited to XX MPH / km/ h in XX mi/km
Your remaining diesel exhaust fluid has depleted. Upon restart,your vehicle speed is now limited. You must replenish thediesel exhaust fluid to resume normal operation of your
vehicle. See Selective Catalytic Reductant System (page 197
).
DEF Level Empty Speed
Limited to XX MPH/km/ h Upon Restart
The diesel exhaust fluid is empty. You must replenish thediesel exhaust fluid to resume normal operation of your
vehicle. See Selective Catalytic Reductant System (page 197
).
DEF Level Empty Speed
Limited to XX MPH/km/ h
The selective catalytic reduction system detects low exhaustfluid. The engine will eventually enter into an idle only mode.
You must replenish the diesel exhaust fluid to resume normal operation of your vehicle. See
Selective Catalytic
Reductant System (page 197).
DEF Level Empty Engine
Idled Soon
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Information Displays

Action
Message
A problem exists with the selective catalytic reduction systemcausing your vehicle into an idle-only mode. If the exhaust
fluid is empty, you must replenish the diesel exhaust fluid to resume normal operation of your vehicle. See Selective
Catalytic Reductant System (page 197).
DEF Level Empty Engine
Idled See Manual
The selective catalytic reduction system detects a fault. Thesystem displays your vehicle ’s top speed limit and distance
before limitation. Have the system checked by an authorized dealer.
DEF Fault Speed Limited
to XX MPH/km/h in XX mi/km
The selective catalytic reduction system detects a fault. Uponrestart, your vehicle speed is now limited. Have the system checked by an authorized dealer.
DEF Fault Speed Limited
to XX MPH/km/h Upon Restart
The selective catalytic reduction system detects a fault. Thesystem displays your vehicle ’s top speed limit. Have the
system checked by an authorized dealer.
DEF Fault Speed Limited
to XX MPH/km/h
You must have your vehicle serviced by an authorized dealer.
Ignoring the warning message could lead to reduced drivability and customer expense, including damage to the diesel
particulate filter. Your new vehicle warranty could not cover this damage.
Exhaust Filter Over Limit
Service Now
The water separator has reached a predetermined capacityand needs draining. See
Draining the Fuel Filter Water
Trap (page 361).
Water in Fuel Drain Filter
A low fuel pressure condition has occurred due to cold, low
fuel level or fuel filters need to be changed. See Fuel Quality (page
187).
Fuel Pressure Low
Doors and Locks Action
Message
The door(s) listed is not completely closed.
X Door Ajar
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Information Displays

Lane Keeping System
Action
Message
The system malfunctioned. Contact an authorized dealer as soon as possible.
Lane Keeping Sys.
Malfunction Service Required
The system detects a condition that has caused the systemto be temporarily unavailable.
Front Camera Tempor-
arily Not Available
The system detects a condition that requires you to clean thewindshield in order for it to operate properly.
Front Camera Low Visib-
ility Clean Screen
The system malfunctioned. Contact an authorized dealer assoon as possible.
Front Camera Malfunc-
tion Service Required
The system requests you to keep your hands on the steering wheel.
Keep Hands on Steering
Wheel
Maintenance Action
Message
Stop your vehicle as soon as safely possible and turn off the
engine. Check the oil level. If the warning stays on or continues to come on with your engine running, contact an authorized dealer as soon as possible.
Low Engine Oil Pressure
The engine oil life remaining is 10% or less.
Change Engine Oil Soon
The oil life left is at 0%.
Oil Change Required
The brake fluid level is low, inspect the brake system immedi-ately. See Brake Fluid Check (page 377).
Brake Fluid Level Low
The brake system needs servicing. Stop your vehicle in a safeplace. Contact an authorized dealer.
Check Brake System
Your vehicle is still in Transport or Factory mode. This could
not allow some features to operate properly. See an author- ized dealer.
Transport / Factory
Mode Contact Dealer
The powertrain needs service due to a powertrain malfunction.
See Manual
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Information Displays

MyKey
Action
Message
You did not program a MyKey.
MyKey not Created
MyKey is active.
MyKey Active Drive
Safely
When switching on your vehicle and MyKey is in use, displaysthat the MyKey speed limit is on.
Speed Limited to XX
MPH/km/h
MyKey is in use and the MyKey speed limit is on and the vehiclespeed is approaching 81 mph (130 km/h).
Near Vehicle Top Speed
You have reached the speed limit set for your MyKey.
Vehicle at Top Speed of
MyKey Setting
You have an active MyKey with a programmed set speed limit.
Check Speed Drive
Safely
Belt-Minder turns on with a MyKey in use.
Buckle Up to Unmute
Audio
With a MyKey in use, AdvanceTrac turns on.
AdvanceTrac On -
MyKey Setting
With a MyKey in use, traction control turns on.
Traction Control On -
MyKey Setting
With a MyKey in use, park aid is always on.
MyKey Park Aid Cannot
be Deactivated
With a MyKey in use, lane keeping alert turns on.
Lane Keeping Alert On
MyKey Setting
Off Road Action
Message
Hill descent control mode is active.
Hill Descent Control Active
Hill descent control mode is inactive.
Hill Descent Control OFF
Your vehicle speed requirement for off-road modeentry has not been met.
For Hill Descent Reduce Speed
XX MPH/km/h or Less
You need to select a transmission gear for hill descentmode.
For Hill Descent Select Gear
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Information Displays

Action
Message
Hill descent control mode is deactivated and you mustresume control.
Hill Descent Driver Resume
Control
A hill descent system fault is present.
Hill Descent Control Fault
The hill descent system is cooling due to overuse.
Hill Descent Control Off System
Cooling
The hill descent control system is ready.
Hill Descent Control Ready
Park Aid Action
Message
The system has detected a fault that requires service. Contactan authorized dealer. See Rear Parking Aid (page 234).
Check Front Park Aid
The system has detected a fault that requires service. Contactan authorized dealer. See
Rear Parking Aid (page 234).
Check Rear Park Aid
Displays the park aid status.
Front Park Aid On Off
Displays the park aid status.
Rear Park Aid On Off
Park Brake Action
Message
The electric parking brake is set and a manual release isattempted without the brake pedal being pressed.
To Release: Press Brake
and Switch
The electric park brake is set and an automatic release isattempted but cannot be performed. Perform a manual release.
Park Brake Use Switch
to Release
The electric park brake is set and your vehicle speed exceeds
3 mph (5 km/h). Release park brake before continued driving.
Release Park Brake
The electric park brake is not fully applied.
Park Brake Not Applied
The electric park brake is not fully released.
Park Brake Not Released
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Information Displays

Action
Message
The electric park brake system has been put into a special
mode that is used to allow service of the rear brakes. Contact an authorized dealer.
Park Brake Maintenance
Mode
The electric park brake system has detected a condition thatrequires service. Some functionality could still be available. Contact an authorized dealer.
Park Brake Limited
Function Service Required
The electric park brake system has detected a condition thatrequires service. Contact an authorized dealer.
Park Brake Malfunction
Service Now
Power Steering Action
Message
The power steering system detects a condition that requiresservice. See an authorized dealer.
Steering Fault Service
Now
The power steering system is not working. Stop your vehiclein a safe place. Contact an authorized dealer.
Steering Loss Stop
Safely
The power steering system detects a condition within the
power steering system or passive entry or passive start system requires service. Contact an authorized dealer.
Steering Assist Fault
Service Required
The steering lock system detects a condition that requiresservice. See an authorized dealer.
Steering Lock Malfunc-
tion Service Now
Pre-Collision Assist Action
Message
You have a blocked sensor due to bad weather, ice, mud or
water in front of the radar sensor. You can typically clean the
sensor to resolve.
Pre-Collision Assist Not
Available Sensor Blocked
A fault with the system has occurred. Contact an authorized
dealer as soon as possible.
Pre-Collision Assist Not
Available
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Information Displays

Action
Message
Displays when you command a 4x4 shift during
conditions which are potentially harmful to the drive- line components.
To Engage 4x4 Slow to 3 MPH
To Engage 4x4 Slow to 5 km/h
Displays when the 4x4 system requests you releasethe accelerator pedal to complete a 4x4 shift. See Using Four-Wheel Drive (page 213).
To Engage 4x4 Release Acceler-
ator Pedal
Displays when you command a drive mode change toDeep Snow/Sand and the vehicle is in 2H.
For Improved Performance 4x4
Recommended
Displays when you attempt to switch out of 4x4 LOWand Rock Crawl mode is engaged.
To Exit 4x4 LOW Exit Rock
Crawl Mode
Displays when you attempt to select Rock Crawl modeand 4x4 LOW is not engaged.
To Enter Rock Crawl Mode 4x4
LOW is Required
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Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 202008, Second-Printing Information Displays