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Old 05-01-2009, 10:56 PM
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Location: Gering NE
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ML 320 Voltage

A question for this forum. I have a 2002 Mercedes ML320. The last couple of days I have experienced transmission problems that has put the vehicle into the "limp home" mode. As I live in a very rural area I do not have a MB dealership closeby. The local tech said he retrieved low voltage codes and that I needed a new battery. He then called the nearest MB service center and they said that what was needed was a valve body and another part that was a very common problem with this vehicle.... to the tune of $1500. I'm thinking that a battery might be all that is needed but would like some input.
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Old 05-01-2009, 11:47 PM
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Quote:
Originally Posted by vagirl38 View Post
........they said that what was needed was a valve body and another part that was a very common problem with this vehicle.....
The other part is probably the conductor plate. To replace it, the valve body must be removed, so you're looking at about 2-3 hours labor. IMHO, the conductor plate is the weakest link. The valve body may be the problem (I doubt it), but the only way to be sure is to know what fault codes are stored in the transmission. Can you get this information from your local tech? If so, let us know.

In the meantime, have the battery and charging system tested. Low voltage can cause a variety of issues. Keep us posted.
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Old 05-02-2009, 12:03 AM
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Yes thats right other part was the conductor plate. The shop is open on Sat. I will check with them on the transmission codes in the morning and let you know. THANKS so much for your help!!!
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Old 05-02-2009, 12:20 PM
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Called the shop this morning and got a list of codes. Engine: P2065 Transmission: P2600, P2602, P2404, P240C, P2313, P2001. Any help would be appreciated. I told the shop to replace the battery today as other parts can't be here until Tuesday. It was interesting that the problem would appear after the car had sat for several hours...leading me to wonder if it was simply a voltage problem that would correct itself once the battery was being charged while driving....?
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Old 05-02-2009, 06:37 PM
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dropped a new battery in it today...codes are gone and no problems so far...keeping my fingers crossed
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