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  #1  
Old 03-04-2014, 11:01 PM
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722.9 7 speed tranny P0717 code

Anybody encounter this? Car has less than 63000 miles, transmission already done?

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Old 03-04-2014, 11:28 PM
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My brother had a 06 C230 Sport, so I familiar with the 722.9 and its issue. P0717 is the Input Sensor. Which is in the valve body.. So it makes it more expensive than it has to be. This was a known issue for the 722.9, but not every one was affected.

Last edited by jake12tech; 03-04-2014 at 11:29 PM. Reason: spelling accident
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Old 03-05-2014, 01:16 AM
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Just like Jake said it is more than likely a speed sensor on the conductor plate on top of the valve body. This error is common on the 722.6 and it happens around 100k to 200k miles.

If I were in your shoes, I would contact Sun Valley Transmission-they know what they are doing with Mercedes Transmissions, and they will probably fix your problem at a fraction of the cost than the dealer.

Contact them. They are good honest people..

Sun Valley Mercedes Transmissions

Martin
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  #4  
Old 03-05-2014, 04:55 AM
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Yes, Sun Valley is very reputable around the forums. I have seen your issue happen sometimes around as early as 40,000 miles. Disappointing it didn't make a recall. If you choose to have the dealer do it, it will cost total around $1800.00.
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Old 03-05-2014, 12:17 PM
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722.9 conductor plate replacement will run you ~$1400 at my dealership. Simple job if you know what you're doing. Potential nightmare if you don't.
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Old 03-05-2014, 08:54 PM
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Should i bring the car to the dealer or an independent MB mechanic? Car has an extended warranty. Any one have experience with extended warranties and transmission problems?
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Old 03-05-2014, 10:06 PM
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Quote:
Originally Posted by jake12tech View Post
Yes, Sun Valley is very reputable around the forums. I have seen your issue happen sometimes around as early as 40,000 miles. Disappointing it didn't make a recall. If you choose to have the dealer do it, it will cost total around $1800.00.
Is that $1800 out the door price? I wasnt expecting this problem this early. A transmission oil and filter change cost a little less than $300 at the dealership i go to.
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Old 03-06-2014, 10:27 AM
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Is that $1800 out the door price? I wasnt expecting this problem this early. A transmission oil and filter change cost a little less than $300 at the dealership i go to.
I doubt they will cover it. You might get lucky though. If they don't, take it to an indy who knows what he's doing.

This issue is usually caused by the graphite deposits, so it makes it seem easy like a transmission flush will fix it. It doesn't though, so even if you change the fluid, you'll still have the valve body issue. Don't waste your money. Someone is selling a similar car privately and had this same issue. It cost them around $1500.00 to have it replaced. Also, when you have this replaced make sure they do the adaptions. If they don't that it'll be very quirky again.
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Old 03-06-2014, 12:09 PM
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Originally Posted by my123ca View Post
Should i bring the car to the dealer or an independent MB mechanic? Car has an extended warranty. Any one have experience with extended warranties and transmission problems?
All the after-market warranty companies I deal with cover this repair. I'd recommend having a dealer do the job but then again I'm biased. Regardless of where you go, they'll need an SDS. Bolting the parts on is easy. Programming on the other hand, is usually where the fun starts.
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Old 03-06-2014, 08:36 PM
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Thanks for all your input. Car is in the dealer right now. They forwarded the diagnosis to the insurance company. Hopefully everything works out.
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  #11  
Old 11-29-2016, 12:06 PM
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Quote:
Originally Posted by jake12tech View Post
Yes, Sun Valley is very reputable around the forums. I have seen your issue happen sometimes around as early as 40,000 miles. Disappointing it didn't make a recall. If you choose to have the dealer do it, it will cost total around $1800.00.
My 2004 S430 [VGS1] with only 42,000 miles has the P0717 code error now.

Thankfully more independent shops are adept to do the work; and a lot are dedicated to rebuilding the valve body and conductor plate for other shops and (Advanced) DYIers.

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