Ford 2015 F-150 Owner's Manual page 310

You have limited engine power when in the
fail-safe mode, so drive your vehicle with
caution. Your vehicle will not maintain
high-speed operation and the engine will
operate poorly.
Remember that the engine is capable of
automatically shutting down to prevent
engine damage. In this situation:
1. Pull off the road as soon as safely
possible and switch off the engine.
2. Tow your vehicle to an authorized
dealer.
3. If this is not possible, wait a short
period for the engine to cool.
4. Check the coolant level and add if low.
5. Re-start the engine and drive your
vehicle to an authorized dealer.
Note: Driving your vehicle without repair
increases the chance of engine damage.
Contact an authorized dealer as soon as
possible.
Engine Fluid Temperature
Management (If Equipped)
WARNINGS
To reduce the risk of crash and injury,
be prepared that the vehicle speed
may reduce and the vehicle may not
be able to accelerate with full power until
the fluid temperatures reduce.
Never remove the coolant reservoir
cap while the engine is running or hot.
Your vehicle can pull a trailer, but because
of the added load, your vehicle's engine
may temporarily reach higher
temperatures during severe operating
conditions such as ascending a long or
steep grade while pulling a trailer in high
temperatures.
F-150 (TFC) Canada/United States of America, enUSA, Fourth Printing
Maintenance
At this time, you may notice your engine
coolant temperature gauge needle move
toward the H and the POWER REDUCED
TO LOWER TEMP message may appear
in the information display.
You may notice a reduction in vehicle
speed caused by reduced engine power.
In order to manage the engine fluid
temperatures, your vehicle may enter this
mode if certain high-temperature and
high-load conditions take place. The
amount of speed reduction depends on
many factors such as vehicle loading,
towing, grade and ambient temperature.
If this occurs, there is no need to pull off
the road. You can continue to drive your
vehicle while this message is active.
The air conditioning may also cycle on and
off during severe operating conditions to
protect overheating of the engine. When
the engine coolant temperature decreases
to a normal operating temperature, the air
conditioning will turn on once again.
If the engine coolant temperature gauge
moves fully into the red (hot) area, or if the
coolant temperature warning or service
engine soon messages appear in your
information display:
1. Pull off the road as soon as safely
possible and shift the transmission into
P.
2. Leave the engine running until the
coolant temperature gauge needle
moves away from the red (hot) area.
After several minutes, if the
temperature does not drop, follow the
remaining steps.
3. Switch the engine off and wait for it to
cool before checking the coolant level.
4. If the coolant level is normal, restart
your engine and continue.
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