2007 E550 Transmission Valve Problem - Mercedes-Benz Forum

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post #1 of 2 (permalink) Old 11-01-2012, 10:38 PM Thread Starter
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Date registered: Nov 2012
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2007 E550 Transmission Valve Problem

This issue just started at 100K miles. While driving on the highway, the trans. stays in 7th gear even though I slow down or come to a complete stop. I have to turn off the car and turn it back on and the issue is resolved until it happens again a few days later.

I did research online and it seems engines 722.9 have a bovalve body issue. Anyone with this problem? What is the recommeneded fix and how much?


Last edited by UGAE550; 11-01-2012 at 10:42 PM.
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post #2 of 2 (permalink) Old 11-15-2012, 08:12 PM
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Vehicle: 2010 ML550, 2012 GLK350 4Matic
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Classic 722.9 valve body issue. Around $1k for the part and $600 for install.

FYI: This is the AMG forum.... you need to ask this question in the W211 forum

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