New Listing NAG1 Dodge Automatic Transmission W5A580, 2009 Challenger, p/n 68003115AC. Or Best Offer +$300.00 shipping. Watch; S p o n s o r e d. W5A580 History The NAG1 (WA580 or W5A580) automatic is an electronically controlled 5 speed transmission with a lock up clutch in the torque converter. Fifth gear is designed to be an overdrive with a high speed ratio. Ratios for gears are obtained by three planetary gear sets. The 722.6 lines of transmission are designated by W5A XXX, where the XXX is the maximum input torque value (in newton-meters) the transmission can safely handle. Most of the W210s use the W5A 330 version although some are equipped with W5A 300 or W5A 580 versions. Each version has many different models such as 722.605, 722.664, etc.

W5a580 Transmission

5G-Tronic is Mercedes-Benz's trademark name for its five-speed automatic transmission, starting off with the W5A 580 and W5A 330 (Wandler-5-Gang-Automatik bis 580 oder 330 Nm Eingangsdrehmoment; converter-5-gear-automatic with 428 or 243 ft·lb maximum input torque; type 722.6) as core models.

• BULLETPROOF JEEP TRANSMISSION W5A580/NAG1: Our Price: $ 4,998.00. Product Code: W5A580-NAG1. Description Level 10 Bulletproof Transmission. The Bulletproof Jeep package is rated to 700HP and can be built up to 1000HP.The factory transmission has a 87% failure rate after installing a supercharger or turbo. You have two options go to dealer.
• Fully rebuilt NAG1 W5A580 5 speed transmission for 2006 and 2007 Dodge Charger, 2006 to 2009 Chrysler 300 with 3.5L engines. Will cover shipping one way. Seller assumes all responsibility for this listing.

Abstract[edit]

The 5G-Tronic (model W5A 330 and W5A 580 · type 722.6) is an electronically shifted 5-speed overdrive automatic transmission with torque converter lock-up (typically in gears 3, 4 and 5) and 2-speed for reverse. In all applications this transmission is identified as the New Automatic Gearbox Generation One, or NAG1.

It replaced the older 4-speed 4G-Tronic transmission-family and its 5-speed derivative, and was replaced by the significantly more complex and cost-intensive 7-speed^[a] Mercedes-Benz 7G-Tronic (model W7A 700 · type 722.9) transmission with 11 main components,^[b] introduced in 2003. Due to its high torque capacity (up to 1000 Nm) and lower cost, it was still retained for turbocharged V12 engines, four-cylinder applications and commercial vehicles for almost a decade. It is still being built for niche applications (e.g. Sprinter with petrol/CNG M111 engine, Jeep Wrangler, etc.).

Specifications[edit]

Basic concept[edit]

Technical and economic progress is reflected in 5 forward gears^[c] out of 9 main components,^[d] compared to 5 forward gears^[e] out of 11 main components^[f] in the direct predecessor... It is fully electronic controlled and equipped with a torque converter lock-up.

Gear ratios[edit]

Special operating modes[edit]

Winter Mode[edit]

Activated by a toggle switch, Winter mode sets the gearbox to start off in 2nd gear, both in Drive and Reverse. This is designed to reduce wheelspin on icy surfaces.

With Jaguar XJR applications the switch is labelled 'Sport'. In regular driving mode the gearbox starts off in 2nd gear, and will only engage 1st gear when triggered via the kickdown switch. While 'Sport' mode is enabled the gearbox will always start off in 1st gear.

Speedshift (2001-)[edit]

Speedshift is a performance feature set for the Mercedes-Benz transmissions which includes manual mode and active downshifting. When cornering at high speed, the transmission maintains the same gear above a certain lateral acceleration level. It can also automatically downshift before overtaking.

It was first used in 2001 Mercedes-Benz C 32 AMG^[3] and 2001 Mercedes-Benz SLK 32 AMG.^[4]

AMG Speedshift (2002-)[edit]

A version with mechanical lock-up of the torque converter from first gear and steering-wheel-mounted shifter. AMG Speedshift is also used in 7G-Tronic transmission.^[5]

It was first used in 2002 Mercedes-Benz E 55 AMG, S 55 AMG, C55, CL 55 AMG.^[6]

AMG Speedshift R[edit]

A version used in Mercedes-Benz SLR McLaren. It includes three manual modes.

Applications[edit]

Mercedes models[edit]

Mercedes S-Class[edit]

• 1996–1998 Mercedes-Benz W140
• 1999–2005 Mercedes-Benz W220
• 2006–2013 Mercedes-Benz W221 (V12 models only)

Mercedes CL[edit]

• 1996–1998 Mercedes-Benz C140
• 2000–2006 Mercedes-Benz C215
• 2007–2014 Mercedes-Benz C216 (V12 Models only)

Mercedes E-Class[edit]

• 1996–2002 Mercedes-Benz W210 (all models except some early 1996 cars)
• 2002–2006 Mercedes-Benz W211 (all models except 2004-2005 E500)
• 2007–2009 Mercedes-Benz W211 (4-cyl and 4-matic only)
• 2009–2011 Mercedes-Benz W212 (4-cyl models only)

Mercedes C-Class[edit]

• 1996–2000 Mercedes-Benz W202
• 2001–2005 Mercedes-Benz W203 (all models)
• 2006–2007 Mercedes-Benz W203 (4-cyl and 4-matic models only)
• 2007–2011 Mercedes-Benz W204 (4-cyl models only)

Mercedes CLK[edit]

• 1998–2002 Mercedes-Benz W208
• 2003–2005 Mercedes-Benz W209 (all models except 2005 CLK 500)
• 2006–2009 Mercedes-Benz W209 (4-cyl and CLK 55AMG only)

Mercedes ML[edit]

• 1998–2005 Mercedes-Benz W163

Mercedes G-wagon[edit]

• 1996–2006 Mercedes-Benz W463 (all models)
• 2007–2012 Mercedes-Benz W463 (G55 AMG only)

Mercedes SLK[edit]

• 1997–2003 Mercedes-Benz R170
• 2004–2010 Mercedes-Benz R171 (4-cyl models only)

Mercedes SL[edit]

• 1996–2001 Mercedes-Benz R129
• 2001–2004 Mercedes-Benz R230 (all models)
• 2005–2006 Mercedes-Benz R230 (all models except SL500)
• 2007–2011 Mercedes-Benz R230 (SL 55AMG and V12 models only)

Mercedes SLR[edit]

• 2005–2009 Mercedes-Benz W199

Maybach[edit]

• 2002–2013 Maybach 57 and 62

Non Mercedes-Benz models[edit]

Jeep[edit]

• 2002–2012 Jeep Grand Cherokee^[7] (02-04 WG Diesel W5J400, 05-10 WK V6, WK V8, WH V6 3.0 Diesel export only Steyr W5A580)
• 2006–2010 Jeep Commander XK (3.7 gas) XH (3.0 diesel - export)
• 2012–2018 Jeep Wrangler (JK)^[8]

Dodge[edit]

• 2005–2008 Dodge Magnum (AWD, RT, SRT8 only)
• 2006–Today Dodge Charger (R/T, SRT8; 5.7 & 6.1L) (2006-2007 3.5L V6 HO) (2015+ Police Only)
• 2007–2011 Dodge Nitro (4.0L Models only)
• 2009–2014 Dodge Challenger
• 2011–2012 Dodge Durango (V6 Models only)
• 2003–2006 Dodge Sprinter Vans ( N. America)

Chrysler[edit]

• 2004–2008 Chrysler Crossfire, all models^[9]
• 2005–2014 Chrysler 300

Jaguar[edit]

• 1998–2003 Jaguar X308 (Supercharged models only)
• 1998–2002 Jaguar XK (X100) (Supercharged models only)

Ssangyong[edit]

• 1998–2014 Ssangyong Chairman H
• 2004–2017 Ssangyong Rexton
• 2005–2017 Ssangyong Rodius
• 2006–Today Ssangyong Kyron
• 2014–Today Ssangyong Actyon sports

Porsche[edit]

• 1997–2006 Porsche 911

Freightliner[edit]

• 2001-2007 Freightliner Sprinter Vans (USA)

See also[edit]

Notes[edit]

1. ^plus 2 reverse gears
2. ^4 planetary gearsets (Ravigneaux planetary gearset considered as 2), 4 brakes, 3 clutches
3. ^plus 2 reverse gears
4. ^3 simple planetary gearsets, 3 brakes, 3 clutches
5. ^plus 1 reverse gear
6. ^4 planetary gearsets (Ravigneaux planetary gearset considered as 2), 4 brakes, 3 clutches

References[edit]

1. ^ ^ab<https://www.scribd.com/embeds/92643386/content?start_page=1&view_mode=list&access_key=key-7h437wiv215r2tv8d93>
2. ^ ^ab<http://www.w124performance.com/docs/mb/transmission/722.6/trans_722.6_ATSG_2004.pdf>
3. ^C 32 AMG: High-performance saloon with a high-torque, six-cylinder supercharged engine
4. ^SLK 32 AMG: 354 hp V6 - the new leader among the compact roadsters
5. ^The new Mercedes-Benz SLK-Class: Celebrating its world premiere at the Geneva Motor Show
6. ^Mercedes-AMG GmbH launches V8 Kompressor initiative: up to 368 kW/500 hp for the E-Class, S-Class and CL-Class
7. ^de:Jeep Grand Cherokee
8. ^de:Jeep Wrangler
9. ^Chrysler Crossfire

External links[edit]

Part #:

I was working on writing a bunch of stuff for the transmission, then I found this article on Allpar.com. It's better than what I would have ended up writing. I included it below with only a few minor formatting changes to work on the site. I did email allpar to check if using it was okay, never heard back.

Mercedes NAG1 / WA580 / W5A580 automatic transmission
by Michael Dickens

The NAG1 (WA580 or W5A580) automatic transmission found in many Chrysler products is an electronically controlled 5-speed transmission system with a lock-up clutch in the torque converter. The fifth gear is designed to be an overdrive with a high-speed ratio; the ratios for the gear stages are obtained by three planetary gear sets.

The reasons why Chrysler switched to this transmission are somewhat unclear; the decision was made shortly after the acquisition of a highly profitable Chrysler Corporation by Daimler-Benz, and many alterations appeared to have been made for the benefit of Mercedes to the detriment of Chrysler. That said, the W5A580 / WA580 transmission did have advantages over existing Chrysler automatics. It was more efficient than the four-speed automatic used with lesser LX-car engines at launch, and compared with Chrysler’s own five-speed rear-drive automatic, the 545RFE, it had a wider gear range, considerably smaller size, and lower weight. The 545RFE remained in use alongside the WA580, in applications where its size was not an issue.
The term NAG1 is used to identify a family of transmissions, including the W5A580 / WA580 model (the only difference is the name, which is applied inconsistently) used by Chrysler. The meaning of these acronyms is:

The NAG1 gears are actuated hydraulically, using fully electronic controls, using combinations of three multi-disc holding clutches, three multi-disc driving clutches, and two freewheeling clutches. Electronic control, pioneered by Chrysler and Toyota (among others), can increase gas mileage, increase shift control, provide a more favorable step-up through each of the five gears; increase service life, and lower maintenance costs.
The WA580 was used in many different Chrysler products, starting with the 2005 Chrysler 300 and Dodge Magnum; it was used with the 3.5 liter V6 and Hemi V8 engines. Later, it was used in the Jeep Liberty, Grand Cherokee, Dodge Charger, Dodge Challenger, and Ram truck, as well as every automatic-transmission SRT8 through at least 2012, and the 2012 Jeep Wrangler. The transmission was first launched in 2003 by Mercedes; one engineer familiar with it believes it to have been a copy of the five-speed ZF automatic.
Visually, the NAG1 transmission can usually be identified by a round 13-way connector near the front corner of the transmission oil pan, on the right side. Specific transmission information is usually found stamped into a pad that is located on the left side of the transmission, above the oil pan rail. The gear ratios are:

W5a580 Transmission Jeep

* Different specification listings noted both 3.16 and 3.17. 3.16 appears more likely with 3.17 likely to be a typo. It is possible that the actual ratio is 3.165 and it has been rounded up or down, alternately.
Technical details
Chrysler built the W5A580 at its Indiana Transmission Plant II, on the north side of Kokomo. The plant had 6 million square feet of space and 695 employees; it was completed in 2003 and was created to build this transmission. Indiana Plant I built the 45RFE and 545RFE electronically-controlled transmissions starting in 1998.
The converter and transmission housings are made from a light alloy; they are bolted together and sealed by a coated intermediate plate. The oil pump and the outer disc carrier are bolted to the converter housing. The stator shaft is pressed into it and prevented from rotating by splines. The control unit is bolted to the transmission housing from underneath and closed in by a sheet metal steel oil pan.
The mechanical section consists of a input shaft, output shaft, a sun gear shaft, and three panetary gear sets which are coupled to each other. The planetary gear sets each have four planetary pinion gears. The oil pressure for the torque converter lock-up clutch and internal clutches is supplied through bores in the input and output shaft. All the bearing points of the gear sets, as well as the freewheeling clutches and actuators, are supplied with oil. The parking lock gear is connected to the output shaft via splines.
The control unit is made from the shift plate for the hydraulic control, and an electrical control unit contained in a plastic box which is screwed to the shift plate. Strip conductors make the connection between the electrical components and a 13-pin bayonet-lock plug connector, which makes the connection to the vehicle’s transmission computer.
Hydraulic components, including actuators, are responsible for pressure distribution. Each shift group contains a command valve, a holding pressure shift valve, a shift pressure shift valve, overlap regulating valve, and a solenoid. There are three shift groups: 1-2/4-5, 2-3, and 3-4.
Mercedes W5A580 transmission woes
Throughout the WA580’s / W5A580’s life, readers warned that the transmission was extremely sensitive to fluid quality and would shudder badly when the torque converter clutch is applied with even a 0.5% water dose. The temporary fix was to flush the fluid thoroughly (Chrysler recommended a triple flush) and put in a new filter; the long-term fix was to apply RTV (form-a-gasket) to the base of the transmission fill tube to avoid future contamination (particularly on early models, made in 2003-2005), assuming that's where water got in. If the fill tube was incorrectly installed - that is, if the seal was not perfectly flush with the transmission housing, usually above it - then that must be fixed first, so it is completely flush. The procedure could take up to two hours and was covered in TSB 21-011-05 (it was covered by warranty at that time).
Another problem, at least through 2007, was the transmission filler tube o-ring leaking. Keith K. wrote that this was:
the “transmission cup plug adapter bushing.” The old ones had two white o-rings that were available separately; they all leaked and it looks like a pan gasket leak, there is a TSB from 2005 or 2006 about it. They superceded the O-rings to the whole bushing so you get a new plug bushing and O-rings, new black ones, already installed on it. The new design won’t leak.
Paul Knisely helped a reader whose W5A580 was making a vibration and low-frequency noise in drive, with the MDS activated between 18 and 50 mph. Four different dealerships had said that the system was working normally, and suggested driving in fourth gear to avoid overdrive. Paul checked the problem with Alldata and found a diagnosis that the clutch in the torque converter was not holding — showing it was, but not actually holding. This would cause the vibration.
For performance, “MoparMaven” reported hearing that one of the clutches in the WA580 transmission (not surprisingly) can't handle full power on the 4-5 shift from heavily modified engines (e.g. 700 horsepower and up). “Some clutch cannot take the rpm drop without mechanical advantage to break the tires loose, if only for an instant, because there was a declutching and reclutching. I’m guessing that the engine management system keeps the rpm from running away while this takes place... they recommend lifting for the 4-5 upshift.”
Some critics complained about the sometimes-heavy-handed torque management applied to keep the WA580 reliable, with the engine cutting power noticeably on shifts. Throughout the transmission’s life at Chrysler, critics also complained of its slow shifting. Still, as one forum poster wrote: Chrysler may have overpaid for the NAG1 but it is hardly the slow shifting, unreliable transmission that the auto mags love to call it. Compared to a manual transmission, a human cannot shift faster than a NAG1. The NAG1 has powered some incredibly high horsepower LX vehicles with very little problems. Treat it badly and don't maintain it, and it will break like anything else. There are plenty of LX/Jeep owners who have had absolutely no problems with the NAG1/WA580.
Early reviews of the transmission actually praised its relatively fast shifting, indicating that the “slow shift” issue may have come later, perhaps due to the torque management intended to prolong transmission life.

W5a580 Transmission Diagram

W5a580 Transmission Fluid Capacity

W5a580 Problems

This page last updated: 18-Sep-2012