Ford 2005 F250 Owner's Manual page 19

Transmission fluid temperature gauge (automatic transmission
only): If the gauge is in the:
Normal area (normal) - the
transmission fluid is within the
normal operating temperature
(between "H" and "C").
Yellow area (warning) — the
transmission fluid is higher than
normal operating temperature. This
can be caused by special operation
conditions (i.e. snowplowing, towing
or off road use). Refer to Special
Operating Conditions in the
Scheduled Maintenance Guide for
instructions. Operating the transmission for extended periods of time
with the gauge in the yellow area may cause internal transmission
damage.
Altering the severity of the driving conditions is recommended to lower
the transmission temperature into the normal range.
Red area (over temperature) —
the transmission fluid is overheating.
Stop the vehicle to allow the
temperature to return to normal
range.
If the gauge is operating in the Yellow or Red area, stop the vehicle and
verify the airflow is not restricted such as snow or debris blocking airflow
through the grill. If the gauge continues to show high temperatures, see
your Ford dealer.
REVIEW COPY
2005 F250/350/450/550 (f23), Owners Guide (post-2002-fmt) (own2002),
Market: USA_English (fus)
Instrument Cluster
19