722.6 Valve Body 2010-2012, remanufactured and ready to install. Fits the 722.6. Ships fast from the USA.
By 2010 Mercedes-Benz had moved most C-Class, E-Class and S-Class sedans onto the seven-speed 722.9, but the five-speed 722.6 stayed in production behind the Sprinter van and several diesel-powered ML and GL SUVs through at least 2012. If one of those vehicles is shifting hard, flaring between gears, or has dropped into limp mode with a stored pressure or solenoid code, this remanufactured valve body is built to the casting Mercedes-Benz used on 722.6 units from this later production window.
The 722.6 is a fully electronic five-speed automatic, and the valve body is where that electronics-first design actually lives. Line pressure from the pump flows through a bank of precision-machined bores, and the pressure-regulator and shift solenoids - controlled by the transmission control module through the conductor plate - open and close those bores to apply the right clutch pack or band for the gear the computer has chosen. There is no mechanical backup path; if a bore wears oval or a solenoid drifts, the computer either compensates with a flare or gives up and drops the transmission into limp mode.
Transmission Digest's teardown of this unit traces most of these complaints back to a broken regulating pressure control valve spring that changes line pressure and produces exactly the flare pattern above, and Sonnax's own technical resource on the 722.6 corroborates the same wear points from the parts-manufacturer side. Pull your codes and note which shifts are affected before you order - our 722.6 valve body symptoms and testing guide walks through separating a true valve body fault from a solenoid or speed-sensor-only problem, which can look identical from the driver's seat.
This listing covers the 722.6 as it was still being built for 2010-2012 model years, primarily the Sprinter van and the diesel ML and GL SUVs that kept the five-speed after the sedan lineup moved to the 722.9. The 722.6 ran through several casting and connector revisions over its life, so match the pin count and casting marks on your old unit against the photos, or send us your VIN and we will confirm the exact revision before you order. The full 722.6/722.9 parts collection has the rest of what we stock for this transmission family, and our 722.6 Sprinter service kit covers the fluid and filter side for the Sprinter application specifically.
Drop the pan and change the filter at the same time you swap the valve body, so debris from the worn unit does not immediately contaminate the new one, and fill with MB 236.14/236.15-spec ATF rather than a generic Dexron substitute. Torque the valve body bolts in the factory sequence, not corner to corner, and after the swap run the TCM's adaptive relearn with a scan tool - TransGo's own instructions for this unit note that resetting TCC and shift adaptation values after any valve body work is routine, not optional, because the computer has learned the fill times of the old solenoids. If the original complaint pointed at a single circuit rather than the whole valve body, pairing this with a fresh conductor plate and filter kit covers the wiring side of the same failure for less money.
| Fits | 722.6 2010-2012 |
| Part type | Valve Body |
| Condition | Remanufactured |
| 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.
By this production window most C-Class, E-Class and S-Class sedans had already moved to the seven-speed 722.9, so 2010-2012 722.6 units are mainly found behind the Sprinter van and diesel ML/GL SUVs. Confirm your transmission code or VIN before ordering since Mercedes ran both families in parallel for several years.
Delayed engagement into Drive or Reverse, flared 2-3, 3-4 or 4-5 upshifts, torque converter clutch shudder, and limp mode with a stored pressure-control or shift-solenoid code.
Transmission Digest traces most of them to a broken regulating pressure control valve spring inside the valve body, which changes line pressure and produces the flare and delayed-engagement pattern above.
MB 236.14/236.15-spec ATF. Do not substitute a generic Dexron fluid.
Yes - run the TCM's adaptive relearn with a scan tool so it re-times clutch fill against the new valve body instead of the worn one.
A conductor plate and filter kit can cover a wiring-side failure for less money if your complaint is isolated to one circuit rather than the whole unit.
