F 150 Heritage 4WD Pickup V8-5.4L CNG VIN M (2004)
Fluid - A/T: Testing and Inspection
4R70W Electronic Shift Automatic Transmission
Check Fluid Level and Condition
Fluid Level Check
CAUTION: The vehicle should not be driven if the fluid level indicator shows the fluid below the DO NOT DRIVE mark or internal failure could
result.
NOTE: If vehicle has been operated for an extended period of time at highway speeds, in city traffic, in hot weather, or when pulling a trailer, the
fluid needs to cool down to obtain an accurate reading.
NOTE: The fluid level reading on the indicator will differ from operating and ambient temperatures. The correct reading should be within the normal
operating temperature range.
Under normal circumstances, the fluid level should be checked during normal maintenance. If the transmission starts to slip, shifts slowly, or has signs
of fluid leaking, the fluid level should be checked.
1. With the transmission in (P) PARK, the engine at idle, foot pressed on the brake, move the range selector lever through each gear and allow
engagement of each gear. Place the range selector lever in the PARK position.
2. Wipe the fluid level indicator cap and remove the indicator.
3. Wipe the indicator with a clean cloth.
4. Install the indicator back in the filler tube until it is fully seated, then remove the indicator. The fluid level should be within the normal operating
temperature range.
High Fluid Level
A fluid level that is too high may cause the fluid to become aerated due to the churning action of the rotating internal parts. This will cause erratic
control pressure, foaming, loss of fluid from the vent tube and possible transmission malfunction and/or damage. If an overfill reading is indicated
drain and refill the transmission.
Low Fluid Level
A low fluid level could result in poor transmission engagement, slipping, malfunction and/or damage. This could also indicate a leak in one of the
transmission seals or gaskets.
Adding Fluid
CAUTION: The use of any type of transmission fluid other than specified could result in transmission malfunction and/or damage.
If fluid needs to be added, add fluid in 0.25 Liters (1/2 pint) increments through the filler tube. Do not overfill the fluid. For fluid type, refer to the
General Specifications chart.
Fluid Condition Check
1. Check the fluid level.
2. Observe the color and the odor. The color under normal circumstances should be dark reddish, not brown or black or have a burnt odor.
