Replaces the failed conductor plate that drops a Mercedes 722.6 into limp mode, plus the filter, pan gasket, and 13-pin connector adapter with o-rings.
If your Mercedes ML, E-Class, C-Class or a 2010-2018 Sprinter 2500/3500 suddenly locks into one gear, comes back in second every time you restart it, or shows speed sensor or no-communication faults on a scan tool, the conductor plate inside the 722.6 five-speed is the first part to suspect. This kit replaces that plate and bundles the parts that have to be renewed anyway once the pan is off: a new filter, a rubber pan gasket and the 13-pin connector adapter with fresh o-rings. It cross-references OEM numbers 1402701161, 2035400253, 68049181AA, 917679, 2012679 and 0440370.
The 722.6 has no pressure taps and no external switches to speak of. Everything the transmission control unit needs to know about turbine and output speed comes from two speed sensors mounted on the conductor plate, and every command it sends to the three shift solenoids and two pressure-regulating solenoids travels across the same plate. The plate sits flat on top of the valve body and runs to the case connector, so a cracked trace, a failed sensor or a fluid-soaked connector all look the same from the driver's seat. When the control unit loses a speed signal it can no longer judge slip or shift timing, so it protects the clutches by holding the current gear and then defaulting to second after the engine is restarted.
Scan the transmission control unit first and write down every stored fault. Speed sensor codes plus a clean fluid sample point at the plate; slip or flare complaints with no electrical codes point at the hydraulics instead. Unplug the 13-pin connector and look for ATF in the plug or green corrosion on the pins, because a leaking adapter sleeve can trigger circuit faults all by itself. Our 722.6 valve body symptoms and testing guide explains how to separate a worn valve body bore from an electrical fault, and the ML common problems guide covers the pattern on the W163 and W164 trucks.
This plate is built for the 722.6 (also called the NAG1) used across the rear-drive and 4MATIC Mercedes line: C230, C240, C280, C32 AMG, C320, CLK320, CLK430, E300, E320, E350, E430, E500, E55 AMG, ML320, ML430, ML500, S320, S430, S500, S600, SL500 and SLK320, plus the Sprinter 2500 and 3500 from 2010 to 2018 that use the same unit. Mercedes revised the plate and sensors over the production run, so check the number on your old plate against the cross-reference list above, or send us your year and VIN before ordering and we will confirm it. Every other part we carry for this family is on our 722.6 and 722.9 parts page.
If the scan data shows pressure faults on top of the sensor codes, the 722.6 pressure control solenoid sits right under this plate and is easy to replace in the same job. If the valve body itself is worn, a complete 722.6 valve body with solenoids saves a second teardown. For a rundown of other faults on this transmission, see 722.6 common problems and fixes.
| Fits | Mercedes-Benz 722.6 (NAG1) 5-speed automatic; Sprinter 2500/3500 shares this trans |
| Kit includes | Conductor plate, filter, oil pan gasket, 13-pin connector adapter with o-rings |
| Solves | Limp mode, stuck-in-gear, no-communication and speed-sensor faults |
| OEM cross-reference | 1402701161, 2035400253, 68049181AA, 917679, 2012679, 0440370 |
| Application span | C/CLK/E/ML/S/SL classes plus Sprinter 2500/3500 2010-2018 |
| Gasket material | Rubber pan gasket |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It fixes limp mode caused by a failed speed sensor, a damaged conductor plate or a leaking 13-pin connector, which are the most common electrical causes on this transmission. If the scan tool shows slip or ratio faults with no sensor codes, the problem is more likely clutches or valve body wear, and a conductor plate will not cure it.
Yes, the listing covers 2010-2018 Sprinter 2500 and 3500 models that use the 722.6 five-speed. Compare the number on your old plate with the cross-reference numbers or send us your VIN to confirm before ordering.
Use an ATF that carries the Mercedes MB 236.14 approval and check the level at the correct fluid temperature. The 722.6 reacts badly to being over or under filled, and a wrong level can mimic a hydraulic fault.
Yes. Clear the stored faults and reset the transmission adaptations so the control unit relearns clutch fill times with the new sensors. Without a reset, shifts can feel harsh until it adapts on its own.
The o-rings on the adapter sleeve harden with age and let ATF leak into the connector and up the harness. Replacing the sleeve while the pan is down stops the leak and removes a common cause of intermittent solenoid and sensor faults.
