722.9 Tcc Solenoid, new and ready to install. Fits the 722.9. Ships fast from the USA.
Most people land on this page after a 7G-Tronic Mercedes or Sprinter starts shuddering at cruise with a lockup code, or flares and bumps on certain shifts. Read this first: although it is listed under TCC solenoid, this item is a complete set of eight new aftermarket solenoids for the 722.9, and the torque converter clutch solenoid is one of the eight. That makes it a sensible buy when you want to renew the lockup solenoid and the other regulators on the electrohydraulic plate in one job, instead of paying for each position separately.
In the 722.9 every shifting element has its own variable pressure regulator: one solenoid sets working pressure, six control the K1, K2 and K3 clutches and the B1, B2 and B3 brakes, and one controls the torque converter lockup clutch. The control module is built into the conductor plate those solenoids plug into. For lockup, the module modulates the TCC solenoid to slip the converter clutch on smoothly and then hold it at a small controlled slip. If that solenoid sticks or its tip O-ring leaks, lockup pressure wanders and the clutch chatters, which you feel as a shudder at steady speed.
A trade article in GEARS, the ATRA magazine, reports that most 722.9 failures they see come from deteriorated, cut or missing O-rings on the solenoid tips rather than dead coils, and the clutch fed by that solenoid usually burns. So scan the module, note which position is faulting, and check the round case connector for oil inside the plug. If the module does not communicate at all, the fault is the conductor plate and control unit, which Transmission Digest notes are not serviceable even though the solenoids are. Shudder that persists with good solenoids points to the converter or worn regulator valve bores. Our 722.9 torque converter shudder guide and the 722.9 shift solenoid guide cover the tests.
This set is made for the 722.9 seven-speed automatic used in Mercedes-Benz passenger cars and SUVs from the mid-2000s on, and in Sprinter vans with the seven-speed. It is an aftermarket set, not factory Mercedes parts. The 722.9 went through several control unit and valve body revisions, so compare the solenoids in the box with the ones on your plate before installing, and send us your year and VIN if you are unsure. It does not fit the five-speed 722.6; for that unit see the 722.6 TCC solenoid. More parts are on our 722.6 and 722.9 collection page.
Pair the set with a 722.9 service kit with ATF and filter, or step up to a 722.9 valve body if the bores are worn.
| Fits | 722.9 |
| Part type | Tcc Solenoid |
| Condition | New |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is a full set of eight 722.9 solenoids, and the torque converter clutch solenoid is one of them. It is aftermarket, not factory Mercedes.
No. The 722.9 positions are not all interchangeable. Replace one at a time and match each new solenoid to the original by tip color and markings.
They will if the cause is a leaking or sticking TCC solenoid or tip O-ring. Shudder can also come from worn fluid, a worn regulator valve bore or the converter itself, so test before buying.
A Mercedes-approved ATF. Earlier units use 236.14 and later units use 236.15. Check your fill plug tag or service information by VIN.
No. The 722.6 uses different solenoids. See our 722.6 TCC solenoid for that transmission.
That is a conductor plate or control unit fault, not a solenoid fault. New solenoids will not fix it.
