Mercedes-Benz 722.9 7-Speed Automatic Transmission (7G-Tronic Plus) · Mercedes-Benz · Expert rebuild service since 1987. Lifetime warranty. Free diagnostic.
2010–2018 Mercedes-Benz E-Class (W212 E350/E400/E550), 2010–2018 S-Class (W221/W222), 2013–2018 C-Class (W205), 2012–2018 GL/GLE/GLS-Class
| Configuration | 7-speed automatic RWD/4MATIC transmission (7G-Tronic Plus, revised) |
|---|---|
| Gear Ratios | 1st 4.38:1 · 2nd 2.86:1 · 3rd 1.92:1 · 4th 1.37:1 · 5th 1.00:1 · 6th 0.82:1 · 7th 0.73:1 · Rev 3.42:1 |
| Fluid Type | Mercedes-Benz ATF (MB 236.14) |
| Fluid Capacity | 9.5 qts total, 4.5 qts service refill |
The 722.9 conductor plate — while revised from the 722.7 — still fails from heat cycling. High-mileage W212 and W222 units are susceptible.
Symptoms: Limp mode, DTC P0715/P0720, erratic 7-speed shifting, MIL on
The TCC pressure solenoid fails, causing harsh engagement and shudder — same failure mode as 722.7.
Symptoms: Harsh engagement from stop, TCC shudder at cruise, DTC P0740
High-mileage 722.9 units show pump wear that reduces line pressure, causing soft shifts and clutch slip.
Symptoms: Soft or inconsistent shifts, slip under hard acceleration, hunting on inclines
722.9 rebuild replaces conductor plate, Y3/1 solenoid, all clutch packs, torque converter, and all seals. Pump is inspected and replaced if worn. MB 236.14 fluid used throughout.
MB 236.14 ATF every 40,000 miles. The 722.9 improved on the 722.7 in several areas, but conductor plate longevity is still limited by heat cycling. Regular fluid service extends conductor plate life.
The 722.9 is a revised 7G-Tronic with improved efficiency and reduced internal friction. Used in W212/W222 and other post-2010 Mercedes RWD and 4MATIC models.
The 722.9 features revised internals for improved efficiency but shares the same basic 7-speed RWD architecture and conductor plate failure mode.
A full rebuild ranges $2,200–$2,900 at Chicago Transmission.
Mercedes-Benz MB 236.14 ATF — also available as Shell 3403 specification.
Yes — the 722.9 is used in many high-value Mercedes models that justify the repair investment.
Free diagnostic, written estimate, lifetime warranty. Chicago's 722.9 rebuild specialists since 1987.
