Mercedes-Benz 722.7 7-Speed Automatic Transmission (7G-Tronic) · Mercedes-Benz · Expert rebuild service since 1987. Lifetime warranty. Free diagnostic.
2003–2013 Mercedes-Benz E-Class (W211/W212), 2003–2013 S-Class (W221), 2003–2012 C-Class (W203/W204), 2003–2012 CLK/CLS (W209/W219)
| Configuration | 7-speed automatic RWD transmission (7G-Tronic first generation) |
|---|---|
| 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 / Shell 3403) |
| Fluid Capacity | 9.5 qts total, 4.5 qts service refill |
The 7G-Tronic conductor plate fails — same root cause as all Mercedes 722.x series. Complexity of 7-speed electronics makes this failure more expensive to resolve.
Symptoms: Limp mode, multiple DTC codes (P0715, P0720, P0750 series), MIL on, erratic 7-speed shifting
The Y3/1 shift pressure solenoid controls TCC lockup and converter pressure. Failure causes harsh engagement and shudder.
Symptoms: Harsh engagement from Park/Neutral, TCC shudder, DTC P0740 or P0743
Varnish buildup in the 7G-Tronic valve body solenoids causes stuck shift valves and erratic 7-speed ratio selection.
Symptoms: Hesitation between gears, gear hunting, inability to reach 7th gear
722.7 rebuild replaces conductor plate, Y3/1 solenoid, full solenoid set, all clutch packs, and all seals. Valve body is ultrasonically cleaned. MB 236.14 fluid used throughout. Torque converter rebuilt.
Mercedes-Benz MB 236.14 ATF (Shell 3403) every 40,000 miles. The 7G-Tronic was Mercedes' first 7-speed and is more complex than the 722.6. Regular fluid service is critical to solenoid longevity.
The 7G-Tronic (722.7) is Mercedes-Benz's first 7-speed automatic, introduced in 2003. It was used across most rear-wheel-drive Mercedes models through approximately 2013.
Mercedes-Benz MB 236.14 specification ATF — also available as Shell 3403 or approved equivalents. Do not use generic Dexron.
A full 722.7 rebuild ranges $2,200–$2,900 at Chicago Transmission.
Yes — when fluid is maintained. The conductor plate is the primary failure point and is more expensive to replace than in earlier 5-speed Mercedes transmissions.
Very likely — conductor plate or solenoid failure is the most common W211 transmission diagnosis. Full diagnosis determines whether conductor plate replacement or a complete rebuild is needed.
Free diagnostic, written estimate, lifetime warranty. Chicago's 722.7 rebuild specialists since 1987.
