Transmission fluid change - Mercedes-Benz Forum
 
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post #1 of 2 (permalink) Old 11-28-2002, 08:49 AM Thread Starter
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Date registered: Aug 2002
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Transmission fluid change

My wife's ML320 is nearing the 70,000 mile mark and I would like to change the transmission fluid and filter. From past experience with dealerships, I would like to perform this task myself. Has anyone replaced their own fluid on their ML? I realise that removing the pan only drains part of the fluid and that the majority is contained in the torque converter. On other automatic vehicles, I have just drained and refilled the pan multiple times which effectively replaces most of the fluid. However, these cars have not had accessible torque converter drain plugs. I have also read of power flushes which use the transmission cooling lines to replace the fluid but I have also heard numerous horror stories of the power flushes dislodging gunk which then makes its way into the valve body.

I plan on using MB transmission fluid and will buy a new filter and conduction plate. I also know that a dipstick kit has to be purchased in order to check the fluid level. Is there anything else I should consider? Is there a drain plug for the torque converter? If so, how is the converter refilled with fluid since refilling through the dipstick tube just fills the pan?

Alex
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post #2 of 2 (permalink) Old 11-29-2002, 02:29 PM
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Re: Transmission fluid change

Quote:
My wife's ML320 is nearing the 70,000 mile mark and I would like to change the transmission fluid and filter. From past experience with dealerships, I would like to perform this task myself. Has anyone replaced their own fluid on their ML? I realise that removing the pan only drains part of the fluid and that the majority is contained in the torque converter. On other automatic vehicles, I have just drained and refilled the pan multiple times which effectively replaces most of the fluid. However, these cars have not had accessible torque converter drain plugs. I have also read of power flushes which use the transmission cooling lines to replace the fluid but I have also heard numerous horror stories of the power flushes dislodging gunk which then makes its way into the valve body.

I plan on using MB transmission fluid and will buy a new filter and conduction plate. I also know that a dipstick kit has to be purchased in order to check the fluid level. Is there anything else I should consider? Is there a drain plug for the torque converter? If so, how is the converter refilled with fluid since refilling through the dipstick tube just fills the pan?

Alex
Alex, it sounds like you have an earlier model Ml320. You'll have to take out the pan and will have to replace the filter. On earlier models, there was a drain plug at the converter - you'll have to look to determine that. There were some small improvement components that have to be installed with the service (for earlier models). There's been a lot of discussion on this and you'll find a whole lot of information <a href="http://www.*****************/shopforum/showthread.php3?s=&threadid=48754">here</a> and <a href="http://www.*****************/shopforum/showthread.php3?s=&threadid=47910&highlight=transm ission"> here</a>. There are more discussions on this and I'll post as I find them. Just make sure to add the new pieces if you have an early model ML. The fluid is very expensive but I believe the service is worth it.

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