Ford SUPER DUTY 2024 Owner's Manual page 229

Selective Catalytic Reduction System - Diesel
If the DEF tank is frozen, it may not
recognize when the tank is refilled. The DEF
level will update once the tank thaws out.
It is best to fill the DEF tank prior to, or after
a drive cycle greater than 20 minutes to
allow the remaining frozen DEF in the tank
to liquefy. If the tank is overfilled and the
fluid freezes it may cause damage that
your Warranty will not cover.
Note: After filling the DEF tank, there may
be a short period before the increased level
is registered.
FILLING THE SELECTIVE
CATALYTIC REDUCTION SYSTEM
TANK USING A FUEL STATION
PUMP
Filling the diesel exhaust fluid tank using
a fuel station pump is similar to refueling
your vehicle.
1. Fully open the fuel filler door.
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2. Remove the diesel exhaust fluid tank
filler cap.
Note: The diesel exhaust fluid tank has a
blue filler cap.
3. Fully insert the diesel exhaust fluid
pump nozzle.
2024 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202307, DOM
E328783
4. Operate the diesel exhaust fluid pump
nozzle within the area shown.
Note: The pump nozzle shuts off when the
tank is full.
5. Slightly raise the diesel exhaust fluid
pump nozzle and then slowly remove
it.
6. Replace the diesel exhaust fluid tank
filler cap. Turn it clockwise until you
feel a strong resistance and it clicks.
Note: After filling the DEF tank, there may
be a short period before the increased level
is registered.
FILLING THE SELECTIVE
CATALYTIC REDUCTION SYSTEM
TANK USING A PORTABLE
CONTAINER
The following procedure applies to
Motorcraft diesel exhaust fluid or similar
fluid containers. Follow the
manufacturer's instructions.
1. Fully open the fuel filler door.
2. Remove the diesel exhaust fluid
container cap.
3. Place the spout on to the container and
tighten it until you feel a strong
resistance.
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