►The 722.6 5-speed automatic transmission, also known as the NAG1, was designed by Mercedes-Benz and was used in a host of vehicles. This transmission was factory equipment in a host of Mercedes vehicles for over a decade and even found its way into several vehicles from Jeep, Dodge, Jaguar, and Porsche models during this time.

Installing Genuine Mercedes "Blue Top" shift solenoids in place of factory-equipped "brown top" solenoids is a common upgrade for faster and firmer shifts. Delivering increased shift pressure and speed through high-flow solenoids, the "Blue Top" solenoids pair incredibly well with an aftermarket transmission tune.

To upgrade the NAG1 shift solenoids, the valve body must be removed from the transmission. While it's apart, a full service is recommended. This guide assists in installing "blue top" solenoids but also walks 722.6 owners through a complete 722.6 service, including solenoid replacement, conductor plate replacement, overlap sleeve replacement, and fluid and filter replacement.

In this DIY, Danny Kruger, FCP Euro's Mercedes Expert, leads us through the removal of the valve body, the replacement of the conductor Plate, and also the replacement of the torque converter clutch lockup solenoid (also known as the TCC solenoid) as these are common weak points of the 722.6 NAG1.

Shop the parts used in this video:
Mercedes 722.6 Transmission Service Kit: https://www.fcpeuro.com/products/mercedes-722-6-comprehensive-transmission-service-kit?utm_source=youtube&utm_medium=description&utm_campaign=mps%20mercedes&utm_content=722.6%20service

Mercedes 722.6 Transmission Pressure Control Valve (Blue Top Solenoids): https://www.fcpeuro.com/products/mercedes-auto-trans-valve-body-solenoid-2402700089?utm_source=youtube&utm_medium=description&utm_campaign=mps%20mercedes&utm_content=722.6%20service

00:00 - Intro & Tools Needed
03:45 - Mercedes 722.6 Transmission Fluid Drain
05:07 - Mercedes 722.6 Transmission Pan Removal
07:09 - Mercedes 722.6 Final Fluid Drain
09:56 - Mercedes 722.6 Valve Body Removal
16:08 - Mercedes 722.6 Shift Solenoid Upgrade & Conductor Plate Replacement
30:36 - Mercedes 722.6 Valve Body Installation
35:15 - Mercedes 722.6 Transmission Fluid Filter & Pan Installation
38:07 - Mercedes 722.6 Transmission Fluid Fill
39:49 - Wrap-up

This video applies to the following vehicles (& more):
Mercedes-Benz CL600
2003 Mercedes-Benz CL600
2004 Mercedes-Benz CL600
2005 Mercedes-Benz CL600
2006 Mercedes-Benz CL600
2007 Mercedes-Benz CL600
2008 Mercedes-Benz CL600
2009 Mercedes-Benz CL600
2010 Mercedes-Benz CL600
2011 Mercedes-Benz CL600
2012 Mercedes-Benz CL600
2013 Mercedes-Benz CL600

Mercedes-Benz S55 AMG
2003 Mercedes-Benz S55 AMG
From Trans: 4247135
2004 Mercedes-Benz S55 AMG
From Trans: 4247135
2005 Mercedes-Benz S55 AMG
From Trans: 4247135
2006 Mercedes-Benz S55 AMG
From Trans: 4247135

Mercedes-Benz E55 AMG
2004 Mercedes-Benz E55 AMG
From Trans: 4247135
2005 Mercedes-Benz E55 AMG
From Trans: 4247135
2006 Mercedes-Benz E55 AMG
From Trans: 4247135
2003 Mercedes-Benz E55 AMG
From Trans: 4247135

Mercedes-Benz CL65 AMG
2005 Mercedes-Benz CL65 AMG
2006 Mercedes-Benz CL65 AMG
2008 Mercedes-Benz CL65 AMG
2009 Mercedes-Benz CL65 AMG
2010 Mercedes-Benz CL65 AMG
2011 Mercedes-Benz CL65 AMG
2012 Mercedes-Benz CL65 AMG
2013 Mercedes-Benz CL65 AMG

Mercedes-Benz G55 AMG
2005 Mercedes-Benz G55 AMG
2006 Mercedes-Benz G55 AMG
2007 Mercedes-Benz G55 AMG
2008 Mercedes-Benz G55 AMG
2009 Mercedes-Benz G55 AMG
2010 Mercedes-Benz G55 AMG
2011 Mercedes-Benz G55 AMG

Mercedes-Benz SL65 AMG
2005 Mercedes-Benz SL65 AMG
2006 Mercedes-Benz SL65 AMG
2007 Mercedes-Benz SL65 AMG
2008 Mercedes-Benz SL65 AMG
2009 Mercedes-Benz SL65 AMG
2011 Mercedes-Benz SL65 AMG

Mercedes-Benz CLS55 AMG
2006 Mercedes-Benz CLS55 AMG
From Trans: 4247135

Mercedes-Benz S65 AMG
2006 Mercedes-Benz S65 AMG
2007 Mercedes-Benz S65 AMG
2008 Mercedes-Benz S65 AMG
2009 Mercedes-Benz S65 AMG
2010 Mercedes-Benz S65 AMG
2011 Mercedes-Benz S65 AMG
2012 Mercedes-Benz S65 AMG
2013 Mercedes-Benz S65 AMG

Mercedes-Benz SL600
2007 Mercedes-Benz SL600
2008 Mercedes-Benz SL600
2009 Mercedes-Benz SL600

Mercedes-Benz SL55 AMG
2007 Mercedes-Benz SL55 AMG
From Trans: 4247135
2008 Mercedes-Benz SL55 AMG
From Trans: 4247135

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