2021 FORD F-550 vin

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Page 172 of 666

FORD F-550 2021  Owners Manual When the indicator light on the power point
is:
•
On: The power point is working, the
ignition is on and a device is plugged
in.
• Off: The power point is off, the ignition
is off or no device is

Page 177 of 666

FORD F-550 2021  Owners Manual GENERAL INFORMATION
WARNING: Extended idling at high
engine speeds can produce very high
temperatures in the engine and exhaust
system, creating the risk of fire or other
damage. WARNING: 
Do not park

Page 178 of 666

FORD F-550 2021  Owners Manual III (start) - Cranks the engine.
KEYLESS STARTING
 (IF EQUIPPED)
Note: The keyless starting system may not
function if the key is close to metal objects
or electronic devices such as cellular
phones.

Page 179 of 666

FORD F-550 2021  Owners Manual 2. Turn the key to position III to start the
engine.
3. When the engine starts, release the brake pedal.
Do not crank the engine for more than 10
seconds as starter damage may occur.  If
the engine do

Page 184 of 666

FORD F-550 2021  Owners Manual We recommend the following cold
weather idling guidelines:
•
You can use Motorcraft® cetane
improvers or non-alcohol-based
cetane improvers from a reputable
manufacturer as needed.
• Maintain the

Page 185 of 666

FORD F-550 2021  Owners Manual Operation in Standing Water
Ingestion of water into the diesel engine
can result in immediate and severe
damage to the engine. If driving through
water, slow down to avoid splashing water
into the int

Page 186 of 666

FORD F-550 2021  Owners Manual Note:
The heater is most effective when
outdoor temperatures are below 0°F
(-18°C).
For cold climates that are below 
0°F
(-18°C) needing a temporary battery
installation. Order the cold climate p

Page 192 of 666

FORD F-550 2021  Owners Manual Note:
Degraded or oxidized biodiesel can
damage fuel system seals and plastics and
corrode steel parts.
During cold weather, if you have problems
operating on biodiesel, you may need to
use a diesel f