Can a conductor plate on a transmission fail?
While providing improvements in overall shift comfort and driver experience throughout the gear set, they are unfortunately prone to failure, specifically in the speed sensors on the Conductor Plate / Transmission Control Module (TCM). For the consumer or independent automotive shop, this failure can be a significant event for several reasons.
What happens when the valve body and conductor plate fail?
Failed Valve Body and Conductor Plate. Typically when the valve body or conductor plate fail you may experience the following symptoms: Transmission stuck in second gear. Limp Home Mode. Shifts from first to second gear then it stays in that gear. Transmission, will not shift into higher gears.
Where is the conductor plate located on a Mercedes?
The conductor plate bolts on top fo the vavle body located inside the transmission. If you scan your Mercedes-Benz with a diagnostic scanner you may get several error codes that point you to speed sensor faults. You can not replace the speed sensors themselves and therfore you need to replace the whole conductor plate.
Do you need to replace the conductor plate on a Mercedes 722.9?
Luckily, the transmission does not need to be removed in order for you to replace the conductor plate. The early 722.9 transmission (MY 2004-2007) identified as VGS1 on top of the TCU required that you replace both the valve body and conductor plate.
While providing improvements in overall shift comfort and driver experience throughout the gear set, they are unfortunately prone to failure, specifically in the speed sensors on the Conductor Plate / Transmission Control Module (TCM). For the consumer or independent automotive shop, this failure can be a significant event for several reasons.
Failed Valve Body and Conductor Plate. Typically when the valve body or conductor plate fail you may experience the following symptoms: Transmission stuck in second gear. Limp Home Mode. Shifts from first to second gear then it stays in that gear. Transmission, will not shift into higher gears.
The conductor plate bolts on top fo the vavle body located inside the transmission. If you scan your Mercedes-Benz with a diagnostic scanner you may get several error codes that point you to speed sensor faults. You can not replace the speed sensors themselves and therfore you need to replace the whole conductor plate.
Is the Mercedes 722.9 Tronic valve body and conductor plate defective?
Defective valve body and conductor plate issues have effected many Mercedes-Benz cars equipped with 722.9 7G Tronic Automatic Transmissions. If these parts fail they will require replacement in order to extend the life of the transmission. The early 722.9 transmissions installed on Mercedes-Benz models between 2004-2008 had a higher failure rate.