FORD 2015 F-550 v.1 - Manual (Page 105)

Action Message
You select 2WD and need to apply the brakes in
order to exit 4X4 LOW.
TO EXIT 4X4 LOW APPLY BRAKE
You select 2WD while your vehicle is at a stop in
4X4 LOW and you need to shift into Neutral.
TO EXIT 4X4 LOW SHIFT TO N
You select 2WD while your vehicle is operating in
4X4 LOW and you need to reduce your speed.
TO EXIT 4X4 LOW SLOW TO 3
MPH
May display when shifting to or from 4X4 LOW. SHIFT DELAYED PULL FORWARD
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Super Duty (), enUSA
Information Displays