HELP!!! Need advice on direction to go for repair/replacement of 722.9 transmission! - Mercedes-Benz Forum

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post #1 of 1 (permalink) Old 02-05-2012, 11:49 AM Thread Starter
BenzWorld Newbie
Date registered: Feb 2012
Vehicle: 2001 E430 - 2004 C240 - 2004 SL 500
Location: Fremont, Ca
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Exclamation HELP!!! Need advice on direction to go for repair/replacement of 722.6 transmission!

Hello... new member stuck between conflicting diagnosis from 2 different Mercedes Dealerships on the appropriate repair for the 722.6 transmission in my 04 C240. My car has 84K miles and was recently taken to a dealership 3hrs. from home for diagnosis of a transmission problem. It is shifting into 3 and 4th gear prematurely in auto mode, putting a lag on the motor because of the low speed and rpm. In the manual mode the transmission shifts exactly as it should.

The car is now at the dealership 3 hrs from my home and they have thouroughly evaluated the problem. The radiator has already been upgraded and there is no evidence of any anti freeze in the transmission fluid so they recommended that the torque convertor be repalced and the transmission flushed and of course all new fluid added in the process. The cost for this repair comes in at aprox $2400.

I have also discussed the situation in depth with the dealership nearest my home which services all 3 of my Mercedes regularly. They informed me that they have NEVER just replaced the torque convertor, and instead strongly recommend that the entire transmission with a new torque convertor be replaced at a cost of aprox. $4000.

They both seem very sure of what they are saying, and I can see the validity in both arguments. However, I am not interested in throwing away $1600 so asking anyone else who has had this problem what the outcome was for you... or looking for some advice that you think would be helpful for me to make the appropriate choice between the two options. I need to make a decision in the next couple of days and just want to make sure I am not missing something before going forward. Thank you in advance for any assistance you can provide!

Last edited by bulldogdaddy; 02-06-2012 at 08:44 AM.
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