Transmission Fluid Service - Mercedes-Benz Forum
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#1 (permalink) Old 05-17-2011, 05:38 PM
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Transmission Fluid Service

I took my 2008 C300 Sport in for service at an MB dealership. They performed the service and recommended that they "Perform automatic transmission fluid service" at $473,25.

The mileage on my car is 34,000 miles.

I took the car to an auto service company that does MB servicing and he told me that he talked to, someone, I'm not sure who, that informed him that these transmissions don't need servicing. That sounded very strange to me. I just watched a wel known auto show on PBS tv that said automatic transmissions should be serviced every 30,000 miles. They did say that they would do it for $400.

Can anyone tell me more?

Last edited by nickka88; 05-17-2011 at 05:41 PM.
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#2 (permalink) Old 05-17-2011, 09:48 PM
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Originally Posted by nickka88 View Post
I took my 2008 C300 Sport in for service at an MB dealership. They performed the service and recommended that they "Perform automatic transmission fluid service" at $473,25.

The mileage on my car is 34,000 miles.

I took the car to an auto service company that does MB servicing and he told me that he talked to, someone, I'm not sure who, that informed him that these transmissions don't need servicing. That sounded very strange to me. I just watched a wel known auto show on PBS tv that said automatic transmissions should be serviced every 30,000 miles. They did say that they would do it for $400.

Can anyone tell me more?
Personally, I agree with the 30,000 mile transmission flush/service, especially if you plan on keeping the car into the 100,000 mile or beyond range. Yes, it is a pricey service but in my opinion and from what I have read from several VERY reputable techs it makes a huge difference on the longevity and reliability of the transmission. BMW has been suffering large numbers of somewhat premature (well under 100k) tranny failures, largely due in part to their belief in "lifetime fill" fluids! Mike Miller, who is the head maintenance guru and very knowledgeable source for the BMW Car Club of America is adament about changing the tranny fluid at approx. 30K intervals. I think the service is relatively cheap insurance compared to tranny repair or replacement! And even if your not gonna keep the car the next owner will sure be appreciative of the service!! I say definitely do it! Hope that helps. One other thing, it is critical you use the correct approved fluid!

Last edited by 767Driver; 05-17-2011 at 09:50 PM. Reason: More info
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#3 (permalink) Old 05-17-2011, 10:11 PM
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Originally Posted by nickka88 View Post
I took my 2008 C300 Sport in for service at an MB dealership. They performed the service and recommended that they "Perform automatic transmission fluid service" at $473,25.

The mileage on my car is 34,000 miles.

I took the car to an auto service company that does MB servicing and he told me that he talked to, someone, I'm not sure who, that informed him that these transmissions don't need servicing. That sounded very strange to me. I just watched a wel known auto show on PBS tv that said automatic transmissions should be serviced every 30,000 miles. They did say that they would do it for $400.

Can anyone tell me more?
After multiple G-Tronic transmission replacements, MB gave-up on the "lifetime fluid spec" sometime around 2005. Apparently they were led to believe that a very few laboratory sucesses were evidence of a statistical operating norm. Current wisdom has it that the ATF fluid and filter must be flushed and changed in every 39,000 miles (60,000 Km), using Synthetic ATF MB spec 236.14 (Mobil ATF A134, Shell R134, or equivalent meeting spec). MB recommends sooner if you operate under extreme conditions.

Any reliable tranny shop can do the work, but there is a fair amount of labor and consumable parts involved in the process, so I prefer the peace of mind of the dealership. My dealer occasionally offers coupon deals or specials, otherwise it runs $400- $450

Last edited by Michaelb999111; 05-25-2011 at 12:32 PM.
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#4 (permalink) Old 05-18-2011, 06:52 AM
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tran. service

I agree we had a 2006 Jaguar s-type the tranmission went out at 2:00 am in the middle of nowhere in Florida with 58,000 miles on it.Thank God at 30,000 miles the gearbox screen came on took it to the dealer and had it recorded.It was suppose to be lifelong fluid.I change it every 40,000 miles now.
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#5 (permalink) Old 05-18-2011, 10:07 AM
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Originally Posted by nickka88 View Post
I took my 2008 C300 Sport in for service at an MB dealership. They performed the service and recommended that they "Perform automatic transmission fluid service" at $473,25.

The mileage on my car is 34,000 miles.

I took the car to an auto service company that does MB servicing and he told me that he talked to, someone, I'm not sure who, that informed him that these transmissions don't need servicing. That sounded very strange to me. I just watched a wel known auto show on PBS tv that said automatic transmissions should be serviced every 30,000 miles. They did say that they would do it for $400.

Can anyone tell me more?
Yes, it was actually due around 39,000 miles, but I say 10-15 percent early is good for your transmission! I'm going to have mine done a few miles early too.

At one time they claimed factory fill for life as the other company told you, but they learned later that wasn't working out so well.

You were smart to have the service done. You can probably wait the full 39,000 miles until the next time, since you have the break in debris/shavings out now.

The price wasn't horrible you paid either. At my dealership, it's around $590.


Also...the procedure for the 7G Tronic is pretty complicated compared to the older 5 G Tronic. Fill must be done at specific temperatures, etc. Best to always pay the couple extra dollars to have it hopefully done right at the Mercedes dealership.

2008 C300 Sport with P2 Package
2009 SLK 350 with P1 & Heating

Last edited by mika911; 05-18-2011 at 10:10 AM.
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#6 (permalink) Old 05-18-2011, 09:54 PM
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Originally Posted by Michaelb999111 View Post
After multiple G-Tronic transmission replacements, MB gave-up on the "lifetime fluid spec" sometime around 1994. Apparently they were led to believe that a very few laboratory sucesses were evidence of a statistical operating norm. Current wisdom has it that the ATF fluid and filter must be flushed and changed in every 39,000 miles (60,000 Km), using Synthetic ATF MB spec 236.14 (Mobil ATF A134, Shell R134, or equivalent meeting spec). MB recommends sooner if you operate under extreme conditions.

Any reliable tranny shop can do the work, but there is a fair amount of labor and consumable parts involved in the process, so I prefer the peace of mind of the dealership. My dealer occasionally offers coupon deals or specials, otherwise it runs $400- $450
I think you meant to say 2004, not 1994.
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#7 (permalink) Old 05-23-2011, 06:44 PM
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I think you meant to say 2004, not 1994.
I have a 1998 R129 - they told me they will not service the transmission!!! So I am considering going aftermarket somewhere....
RP
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#8 (permalink) Old 05-24-2011, 04:07 PM
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I have a 1998 R129 - they told me they will not service the transmission!!!
RP
Bizarre dealer.
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#9 (permalink) Old 05-24-2011, 05:29 PM
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I have a 1998 R129 - they told me they will not service the transmission!!! So I am considering going aftermarket somewhere....
RP
An MB dealer turning down money?? Fan me, I'm feeling weak at the shock.
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#10 (permalink) Old 05-25-2011, 08:12 AM
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I am starting to wonder. I took my W204 in for a NYS inspection. I just so happened to get a flat right before it was up. So I put on the spare and made an appointment for a loaner. They Replaced only one tire and did the inspection. i had to send it back so they could do the other rear tire. and my brakes and front tires are shot! They let it go?!?! BYW this is a different dealer.....
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