722.9 Solenoid Kit 2011-2016, remanufactured and ready to install. Fits the 722.9. Ships fast from the USA.
Owners of 2011-2016 Mercedes with the seven-speed 722.9, such as the GL450 this kit was referenced against, usually start shopping for solenoids after the same few complaints: the transmission goes into limp mode and holds one gear, shifts flare or bang one day and feel fine the next, or the scan tool shows solenoid circuit and shift quality faults. This remanufactured solenoid kit replaces the shift and pressure-control solenoids on the 7G-Tronic Plus era 722.9, so you can renew the worn coils and seals without buying a complete valve body.
The 722.9 does not bolt its solenoids to a separate plate the way older designs do. They sit on the electrohydraulic control unit, where the conductor plate also carries the fully integrated transmission control unit, Y3/8n4, often called the VGS. The control unit reads its speed sensors and fires each solenoid to apply and release the clutches for every one of the seven ratios, while separate pressure regulator solenoids set how firmly each clutch is applied. Transmission Digest points out that the conductor plate and the control unit are not serviceable as separate parts, but the solenoids and speed sensor are. That is what makes a solenoid kit a real repair on this transmission rather than a guess.
Mercedes bulletin LI27.00-P-051451 for shift quality complaints on this transmission says to read out and save the control unit log and EEPROM data before any repair or adaptation, because that data cannot be reproduced afterward, and to check for the latest transmission and engine software. Do that first. Two cases call for something other than this kit. If the control unit will not communicate at all after an ignition reset and a connector check, the factory remedy is a complete electrohydraulic unit, not a repair kit. And on 7G-Tronic Plus units built from April 2011 to December 2013, torque converter lockup codes P074100 and P278300 were traced to mechanical wear rather than a bad solenoid. Our 722.9 shift solenoid symptoms guide walks through both cases, and the 722.9 pressure control solenoid guide covers the regulator bore wear that can mimic a solenoid fault.
This kit is listed for the 722.9 from 2011 to 2016, with the GL450 as the reference application. The 722.9 went through several revisions, and Mercedes moved to the 7G-Tronic Plus in this period, so solenoid style and connector shape can differ from earlier units. Compare the solenoids on your transmission with the photos, or send us your year and VIN and we will confirm the match. If your transmission was built before 2011, the 722.9 solenoid kit for 2002-2011 is the version to look at. The rest of our parts for this family are on the 722.6 and 722.9 parts page.
If the scan data shows valve body bore wear on top of solenoid faults, a 722.9 valve body may be the better repair for the earlier units it fits.
| Fits | 722.9 2011-2016 |
| Part type | Solenoid Kit |
| Condition | Remanufactured |
| Brand | OEM |
| Reference | GL450 |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
The kit is listed for 2011-2016 722.9 transmissions and was referenced against the GL450. Compare your existing solenoids with the photos or send us your VIN and we will confirm before it ships.
Yes. The conductor plate and the integrated control unit are not serviced separately, but the solenoids and speed sensor are. The exception is a control unit that will not communicate at all; Mercedes calls for a complete electrohydraulic unit in that case.
Seven-speed Mercedes transmissions built from 2010 on use ATF with the MB 236.15 approval. Fill to the specified level at the correct fluid temperature after the job.
Possibly not. On 7G-Tronic Plus units built April 2011 to December 2013, Mercedes traced codes P074100 and P278300 to converter bushing wear or a seal leak between the input shaft and the lockup clutch. Check the build date and follow the bulletin before replacing solenoids.
Yes. Clear the stored faults and reset the transmission adaptations with a scan tool that supports the 722.9, then drive through all gears so the control unit relearns shift timing.
