Four-solenoid set (3 black, 1 brown) for Subaru TR580 and TR690 CVTs in 2012-2023 Impreza, Crosstrek, Forester, Outback and Legacy.
If your Impreza, Crosstrek, Forester, Outback or Legacy judders as it pulls away, lights the AT oil temperature lamp, or keeps coming back with a lock-up duty solenoid code once it is warmed up, the problem is usually one solenoid on the Lineartronic valve body, not the chain or pulleys. The catch is that Subaru does not sell those solenoids individually, so the dealer quote is a complete control valve. This four-piece set (three black-nosed solenoids and one brown-nosed solenoid) lets you rebuild the solenoid side of the valve body you already own for a fraction of that cost.
A TR580 never shifts gears, so every solenoid on it is about pressure. The computer pulses them to set how hard the pulleys squeeze the chain (which fixes the ratio), how firmly the torque converter lock-up clutch applies, and how much clutch pressure goes to the AWD transfer clutch that drives the rear wheels. ATRA lists the lock-up duty, primary-up, primary-down and transfer clutch solenoids as the four normally closed units on these valve bodies, and says they interchange between the larger TR690 (Gen 1) and the TR580 (Gen 2). That shared design is why one kit can be listed for both transmissions.
Do not start by dropping the pan. Transmission Digest recommends unplugging the vehicle harness from the transmission harness at the T4 connector and measuring each solenoid circuit there, which separates an internal solenoid fault from wiring or computer trouble; it gives 10 to 13.5 ohms for the converter clutch circuit. It also describes a 2015 Forester with P0970 where a new valve body did not fix the code because the transmission computer itself had a burned component, and notes Subaru bulletin 16-131-20R walks through harness checks before solenoid replacement. Check fluid level and condition too; our Subaru Lineartronic CVT service guide covers the level procedure, and if you are chasing a judder rather than a code, read CVT slipping under load to rule out a worn chain or pulley first.
The listing covers the TR580 and TR690 in the 2012-2023 Impreza, 2013-2023 Crosstrek, 2014-2023 Forester, 2015-2023 Outback and 2015-2023 Legacy, and replaces Subaru numbers 31825AA050, 31825AA051 and 31825AA052 and 31706AA030 through 31706AA033 (those are valve assembly numbers the solenoids mount to, not individual solenoid numbers). Subaru revised the valve body several times over that span, and the Outback and Legacy came with more than one engine and CVT, so pull your old solenoids and compare nose color, connector and body shape with the photos before you install, or send us your year and VIN and we will check it. ATRA notes the lock-up duty solenoid may need its wires cut and soldered when moving between Gen 1 and Gen 2 bodies. More Subaru and chain-CVT parts are on our CVT parts page.
Drain the fluid, remove the pan and strainer, and take pictures of the solenoid harness routing before anything comes apart. Tag every solenoid to its bore as it comes out: the brown solenoid has one home, and swapping the black ones between positions turns a fix into a new complaint. Pull each solenoid straight out without twisting, lube the new O-rings with clean CVT fluid, seat them fully and tighten the brackets evenly. Refill only with the Subaru fluid your model specifies, such as genuine Subaru CVTF-II, check the level hot by the factory method, clear codes and run the learning procedure with a scan tool. If your AWD circuit is the one that failed, the single TR580 transfer clutch duty solenoid is also available, and if the bores are scored or the valves stick, a complete TR580 valve body assembly is the better repair.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The kit has three black-nosed solenoids and one brown-nosed solenoid, matching the color coding on the original valve body. Mark each old solenoid to its bore as you remove it and install the new one with the same color in the same spot.
The listing covers 2015-2023 Outback and Legacy with the TR580 or TR690. Because Subaru used different engines and revised the valve body in that span, compare your old solenoids with the photos or send us your year and VIN before ordering.
Often, yes. ATRA reports the lock-up duty solenoid on these CVTs goes open circuit when hot and sets P2763. Measure the circuit at the T4 connector first so you are not replacing solenoids for a wiring or TCM fault.
Subaru only sells the complete control valve assembly, not individual solenoids. A solenoid kit lets you repair the original valve body when its bores and valves are still good.
Use the Subaru CVT fluid your vehicle calls for, never a universal ATF, set the level hot by the factory procedure, then clear codes and run the CVT learning procedure with a capable scan tool.
