Valve body/speed sensors just been replaced on my ML 350 no - Mercedes-Benz Forum

 
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post #1 of 6 (permalink) Old 09-30-2010, 01:54 AM Thread Starter
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Valve body/speed sensors just been replaced on my ML 350 no

I have been unlucky enough to have the widely reported problem with my Mercedes getting stuck in a gear and losing acceleration. This is occurring in quite a lot of 2006 Mercedes from what I have read and requires a valve body/speed sensor replacement, at a cost in excess of $2000. Ouch!
So now, I have just had my car repaired and picked it up from the workshop 2 days ago BUT I'm not entirely happy with the repair.
Has anyone experienced this.....My car doesn't drive as it used to. It seems to be holding the revs much too long before it changes gear. It's as though it was in a "sports" mode, eventhough my car desn't have that function.
I Will be ringing the dealer tomorrow to arrange for them to have another look at it, especially because they admitted that they had some difficulty adjusting the revs/gear changes. They kept my car for an extra 2 days, explaining the reason to be that my car was taking longer to "learn" the gear changes!!! with the new valve body. Seems it still hasn't "learnt" them but they gave the car back to me anyway. Not very good unfortunately.
Does anyone know what the correct revs are for the various gear changes in a 2006 ML350?
Thanks....
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post #2 of 6 (permalink) Old 09-30-2010, 08:25 AM
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Have they updated the software in the TCU and CCU? It sounds that there might be the glitch and your dealer tech might not know his eye from his elbow.

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post #3 of 6 (permalink) Old 09-30-2010, 07:56 PM
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Have they updated the software in the TCU and CCU? It sounds that there might be the glitch and your dealer tech might not know his eye from his elbow.
thats bullshit. for one a new valve body automatically gets the latest software installed as the valve body includes the control unit and the initial startup procedure includes the software update. now flashing the me unit at the same time is recommended but not required.

now personally i dont think that the adaptation of the gears was done to the fullest. every gear shift is adapted till it shifts smooth 1-2,2-3,3-4 and so on if one wasnt done right or the process wasnt done right you will feel it in certain gear shifts, slipping, banging, jerking, etc... sounds like they need to readapt the trans again.
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post #4 of 6 (permalink) Old 09-30-2010, 07:57 PM
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there are no correct revs for the car, all you need is a smooth transition from one gear to the next.
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post #5 of 6 (permalink) Old 05-08-2012, 12:47 PM
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i have the same problem with my 2007 e280 mercedes
it stick in the 1st gear transmission if any body can help me what to do
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post #6 of 6 (permalink) Old 05-08-2012, 12:50 PM
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[QUOTE=Ulrike;4367555]I have been unlucky enough to have the widely reported problem with my Mercedes getting stuck in a gear and losing acceleration. This is occurring in quite a lot of 2006 Mercedes from what I have read and requires a valve body/speed sensor replacement, at a cost in excess of $2000. Ouch!
QUOTE]

from where online i can get that valve ????
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