Remanufactured shift and pressure control solenoids plus the internal wire harness for U660E valve bodies in Toyota Camry and Lexus ES350.
When a V6 Toyota Camry, Avalon, Lexus ES350 or front-drive RX350 starts banging into second, flaring on the 2-3 shift, or parking itself in one gear with a solenoid code stored, the parts that usually need attention live under the pan of its U660E six-speed. This remanufactured kit replaces the whole electrical side of the valve body at once: seven solenoids already wired to the internal harness, with the harness ending at the case pass-through connector and its long plastic bracket. Nothing has to be pinned, spliced or routed one lead at a time.
The U660E has no throttle cable and no governor. The computer decides every shift, and the valve body turns those decisions into oil pressure through two kinds of solenoid. In the photos you can see both. The four long linear solenoids are current-controlled: the computer varies their current and each one meters a matching pressure to a clutch, to main line pressure, or to the torque converter lockup clutch. The smaller units handle switching jobs. Because the U660E shifts clutch to clutch, one linear solenoid has to release the outgoing clutch while another applies the next, so a single slow or sticking solenoid throws off the overlap and the shift either flares or binds.
The harness matters as much as the coils on this unit. GEARS Magazine notes that on U660E models the transmission control module plugs directly into the solenoid case connector and bolts to the transmission, so the harness and its connector sit right in the path between the computer and every solenoid.
Rule out fluid first. GEARS Magazine lists incorrect or worn fluid as a direct cause of lockup shudder, harsh or flaring shifts, and shift or pressure solenoid performance codes on this family, and adds that Toyota solenoids rarely fail electrically; they stick mechanically in degraded fluid. Toyota's bulletin T-SB-0036-13 sets the level with the fluid at 185 to 194 F, read from the A/T Oil Temperature 1 data on a scan tool, with the car level. Next, look at the valve body. Sonnax documents wear in the solenoid modulator valve bore that leaks line pressure and feeds the linear solenoids too much pressure, which new solenoids cannot cure. Our U660E and U760E problems guide walks through the shudder test in Manual 3 and the bores to check. If the bores are worn, a complete U660E valve body is the better repair.
The listing calls out the U660E and the all-wheel-drive U660F in the Toyota Camry, Lexus ES350 and Lexus RX350. GEARS Magazine dates the U660E to the 2007 ES350 and Camry, the 2008 Avalon and the 2009 Venza, always behind the V6. Four-cylinder versions of those same nameplates use the U760E, which takes a different solenoid set, so a 2.5L Camry is not a match for this harness. Read the transmission code from the build label or decode it from the VIN, then compare the case connector shape and the number of solenoids on your old harness with the photos. If you are unsure, send us your year and VIN before ordering. Every U660E part we carry is on the U660E/U760E collection page.
Doing a full refresh while the pan is off? The U660E overhaul kit supplies the seals and gaskets, and our U660E fluid and capacity guide explains the refill and level check.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. As shown, the seven solenoids come already plugged into the internal harness, which ends at the case connector with its mounting bracket. Fluid, filter and pan gasket are separate.
No. Four-cylinder Toyotas with the six-speed use the U760E, which takes a different solenoid set. This kit is for the V6 U660E and its all-wheel-drive U660F version. Confirm the transmission code from the build label or VIN.
Not always. Performance codes on this unit are often caused by worn or incorrect fluid or by valve body bore wear. Check the fluid type and hot level first, then the solenoid modulator and lockup valve bores, before replacing solenoids.
Toyota WS automatic transmission fluid, part number 00289-ATFWS. Toyota sets the level with the fluid at 185 to 194 F using the overflow plug, with the vehicle level.
Yes. Clear codes in all modules and reset the transmission learned values with a scan tool that supports it, then drive the car from cold to fully warm so it can adapt to the new solenoids.
