Quote:
Originally Posted by SDShocker
I have a '17 SD. How does this work? I've only ever gotten it to drop gears in tow mode.
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pg 221 in the 2017 manual
Diesel Engine Braking (If Equipped)
Do not use tow/haul or engine braking when driving in icy or slippery conditions as the increased braking
can cause the rear wheels to slide and your vehicle to swing around with the possible loss of vehicle control.
This feature increases engine braking at higher engine speeds to provide better grade descent control with less brake and transmission wear and tear. It also improves engine braking when towing or carrying heavy loads.
221
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.
WARNING
Super Duty (TFE) Canada/United States of America, enUSA, First Printing
Brakes
2. Release the accelerator pedal to maximize engine braking.
3. Apply the brakes. The transmission downshifts to lower gears.
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.
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: 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.
Note: Use this when driving downhill and carrying heavy loads or trailering.