Replaces the failed 722.6 conductor plate and leaking 13-pin connector that puts Mercedes and Sprinter 5-speed automatics into limp mode.
A Mercedes C-Class or CLK that drops into limp home, refuses to upshift out of second, or leaves a red drip under the 13-pin plug on the side of the transmission is telling you the same thing: the 722.6 conductor plate or its case connector has given up. This kit replaces the plate and the connector adapter plug together, and adds the spin-in filter and molded rubber pan gasket so the whole repair happens in one pan drop. It replaces OEM numbers 1402701161, 2035400253, 68049181AA, 917679, 2012679 and 0440370.
Mercedes sold the 722.6 as the 5G-Tronic, and Chrysler built the same design as the NAG1 (W5A580). Inside the pan, the conductor plate is a flat electrical carrier bolted over the valve body. It holds the turbine and output speed sensors and links the shift and pressure-control solenoids to the 13-pin connector in the case wall. The transmission control unit times every clutch-to-clutch shift from those two speed signals, so a plate with a broken sensor leaves it guessing. Its answer is to lock the current gear and come back in second on the next start.
That last item is worth a closer look. The o-rings on the connector adapter sleeve harden with age, and on Chrysler NAG1 units from 2004 on Transmission Digest traced intermittent solenoid circuit faults to fluid getting past the sleeve into the plug. A solenoid kit will not fix that. The new adapter in this box will.
Pull the stored codes with a scan tool that reads the transmission module, then unplug the 13-pin connector and inspect it. Wet pins or green crust confirm the connector side of the problem. Speed sensor codes with clean, healthy fluid point to the plate. Flares, slips and soft shifts without electrical codes usually come from valve body bore wear instead, which our 722.6 valve body testing guide walks through. If your car is a W203 C-Class, the C-Class shift problems guide lists the usual causes in order.
Listed fitment includes the A190 2001-2004, C230 1997-2005, C240 2001-2005, C280 1997-2007, C320 2001-2005, C350 2006-2007, CLK320 1997-2005, CLK430 1999-2003 and CLK500 2003-2005, along with CL500, CL600, E300, E320, ML430, S320, S420, S430, S500, S55 and Sprinter 2500/3500 models that run the 722.6. Late CL and AMG models and some vans changed transmissions during their runs, so do not order by model name alone: match the part number on your old plate to the list above, or send us your year and VIN and we will confirm it. The Chrysler number 68049181AA in the cross-reference means NAG1 owners can match by that number too. You can browse every part for this transmission family on our 722.6 and 722.9 parts page.
While the pan is down, it is the cheapest time to renew the solenoid o-rings and coils with a 722.6 solenoid kit. If the unit already slips under load, look at a 722.6 master rebuild kit before spending money on electrical parts. Our C-Class common problems guide covers what else fails on these cars.
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Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The C240 is listed for 2001-2005. Compare the part number on your old conductor plate with the cross-reference numbers on this page, or send us the VIN and we will confirm fitment before it ships.
The cross-reference includes Chrysler number 68049181AA, and the NAG1 is the same 722.6 design. Match that number or your old plate's number before ordering, since the listed vehicle fitment is the Mercedes and Sprinter applications.
No. A stuck-in-second default after a restart is the classic electrical fault response, so the plate, a speed sensor or the 13-pin connector are the usual causes. Read the codes first; slip or ratio codes with no sensor faults point at clutches or valve body wear.
Not always. The kit replaces the plate, plug, filter and gasket. Many shops renew the solenoid o-rings or the whole solenoid set at the same time because the pan is already down and shrunken o-rings cause soft shifts and flares.
Refill to the correct level at operating temperature with an MB 236.14 approved ATF, clear the stored codes and reset the adaptations with a scan tool, then drive the car through all five gears so the module can relearn.
