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Maintenance and Specifications
1. Start the engine and let it run
until it reaches normal operating
temperature (the engine coolant
temperature gauge indicator will be
near the center of the normal area
between H and C).
2. While the engine idles, turn the
steering wheel left and right several
times.
3. Turn the engine off.
4. Check the fluid level in the reservoir. It should be between the MIN
and MAX lines. Do not add fluid if the level is in this range.
5. If the fluid is low, add fluid in small amounts, continuously checking
the level until it reaches the range between the MIN and MAX lines. Be
sure to put the cap back on the reservoir. Refer to Maintenance
product specifications and capacities in this chapter for the proper
fluid type.
BRAKE FLUID
The fluid level will drop slowly as the
brakes wear, and will rise when the
brake components are replaced. Fluid
levels between the "MIN" and "MAX"
lines are within the normal operating
range; there is no need to add fluid.
If the fluid levels are outside of the
normal operating range the
performance of the system could be
compromised; seek service from your
authorized dealer immediately.
TRANSMISSION FLUID
Checking 4-speed automatic transmission fluid
Refer to your scheduled maintenance information for scheduled
intervals for fluid checks and changes. Your transmission does not
consume fluid. However, the fluid level should be checked if the
transmission is not working properly, i.e., if the transmission slips or
shifts slowly or if you notice some sign of fluid leakage.
Automatic transmission fluid expands when warmed. To obtain an
accurate fluid check, drive the vehicle until it is at normal operating
385
2009 F-150 (f12)
Owners Guide, 2nd Printing
USA (fus)
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