Subaru Shift Solenoid

Description

What are transmission solenoids?

Solenoids are electro-hydraulic valves that control the flow of transmission fluid needed to change gears, opening and closing in response to the electrical signals they receive from your vehicle’s engine or transmission control unit, which pulls its data from a series of speed sensors in the engine. It is the flow of transmission fluid, which is controlled by the solenoid valves, that pressurizes your transmission’s clutches and bands, facilitating gear changes.

In automatic transmissions, transmission fluid is directed through the valve body by several types of solenoids, including:

• The transmission shift solenoid
• The lockup solenoid
• The transmission control solenoid
• The torque converter clutch solenoid

Manual transmissions do not typically have shift solenoids. Instead, they use the manual clutch to control how and when gears shift.