Short Description
The 4EAT Transmission is a 4 speed, microprocessor-controlled transmission that was first introduced in 1987.5 Subaru models. It is not a 3 speed transmission with overdrive. It features a lock-up torque converter which locks up in all forward gears except 1st. It has been offered in FWD or Full Time AWD configurations.
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Content
The 4EAT transmission has undergone continuous development and improvement since its introduction. Several unique 4EAT features have been added, changed, or deleted from various Subaru models over the years. We’ll provide you with a brief overview of these features here. For a more thorough description of specific 4EAT operating characteristics or features, refer to the applicable Subaru service manual for the year and model Subaru you are working on.
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Manual 1st gear is activated when the 1-HOLD button is depressed and the shifter is in manually selected “2” to provide engine braking. The transmission will upshift through 2nd and 3rd if necessary, in order to prevent the engine from over-revving. The 1-HOLD indicator is displayed on the combination meter when the button is activated. When the computer overrides the 1-HOLD gear selection the display will change.
Some models have a POWER light located to the left of the tachometer (right on Legacy). It is activated momentarily whenever the vehicle is started. The POWER mode is selected by the computer based upon how quickly the gas pedal is depressed. This changes the performance characteristics of the transmission. i.e., it delays upshifts and may downshift if necessary. When selected, the computer turns the POWER light “ON.”
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