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Benefits of engine braking are:
• Lower brake temperature.
• Reduced brake fade.
• Longer brake life.
• Improved driving and trailering control.
E171217
Press the button on the switch
bank next to the audio unit to
switch the system on or off.
There are two engine brake modes, manual
and automatic.
Manual Engine Braking
1. Press the button to switch on manual
engine braking.
2. Release the accelerator pedal to
maximize engine braking.
3. Apply the brakes. The transmission
downshifts to lower gears.
Note: The engine braking feature only
functions when you release the accelerator.
Note: You can shift the transmission to
lower gears with progressive range selection
(PRS) or manual shifting independent of
pressing the brakes.
Note: You can also use manual engine
braking with cruise control to improve grade
descent control.
Note: If your vehicle has Adaptive Cruise
Control, the speed control system uses the
selected engine brake mode, transmission
gears, and brakes to maintain the set speed
and distance to the vehicle being followed.
Automatic Engine Braking
1. Press the button twice to switch on
automatic engine braking.
2. Release the accelerator or brake pedal.
The system remembers your vehicle
speed.
Note: This feature offers smoother, less
aggressive engine braking during downhill
descents. It may not apply braking if the
vehicle speed is not increasing, although it
will apply full engine braking force when
needed to prevent acceleration. The system
automatically activates the engine brake
and, if necessary, downshifts the
transmission to lower gears to not exceed
your vehicle's set speed when the brake or
accelerator were last released.
Warning Lamp Conditions
• Illuminates when this feature is
switched on and the system is
operating properly. See Warning
Lamps and Indicators (page 108).
• Flashes when the engine brake is
disabled due to a fault or the engine
does not meet the required braking
conditions.
• Does not illuminate when the switch
or indicator is faulty.
You can switch the system on at anytime.
The system becomes active once the
braking conditions are met.
Braking Conditions
• Your vehicle is in a forward gear.
• The engine speed is above about 1500
RPM.
• Your foot is off the accelerator.
You can use this feature with tow/haul or
progressive range selection to provide
further increased engine braking. The
transmission automatically upshifts to
prevent the engine from entering the red
zone on the tachometer. See Automatic
Transmission (page 210).
228
Super Duty (TFE) Canada/United States of America, enUSA, Edition date: 201709, First Printing
Brakes
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