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722.6 transmission problem!!!!
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Posted 7/23/2025 5:19 PM
Moss
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Date registered: Jul 2025
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722.6 transmission problem!!!!

Hey guys i just joined and the problem im experiencing can not be found anywhere so I bought a 2011 g55 amg for my mom(she doesnt know yet) and the only problem im having is that i can shift through all the gears but the car stays in neutral in all gears it does not move whatsoever. On the dash i can see it clear as day that its selecting the right gear but on my scanner it telling me something different when shifting from P to R it stays in P then shifting from R to N it stays in N and when shifting from N to D it stays in N. Another issue i noticed is my transmission output speed sensor is reading 0 rpm and my WP438(SPEED SENSOR 2) reading 365 rpm, WP439(SPEED SENSOR 3) is reading 0 rpm. It also says status of gearshifter NONE , is it a valve body problem, a conductor plate issue, is it the ISM. The transmission is not in limp mode i have no codes i have no stored codes and im lost.

2011 MB G55 AMG 84K MILES



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#244271
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Posted 9/5/2025 8:04 PM
Otiswesty
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Date registered: Jun 2007
Location: Portland, Oregon
Vehicle(s): 463.241, 461.213
Posts: 3020
2000
RE: 722.6 transmission problem!!!!

I suspect the transfer case may be in neutral and the Transmission is working fine. Try switching the TC to low and then high with the rocker switch on the center console. Do this with the trans in the neutral setting.
#244276 - in reply to #244271
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