AT transmission on 2003 Mercedes-Benz C230

Hi there everyone. I own a 2003 Mercedes c230 Kompressor, AT trasmission. I got it 8 mounts ago. About 2 month later I noticed a noise and some vibrations going up hill on highways and loosing a bit of power. Then last week, the car would not stay on 5th gear and shit back to 4th going 70mph up in highway and it asks to add a quarter of oil. I add oil but then yesterday no more 4th gear, 3, 2 and 1 and then it stop. Now it's at the shop. The mechanic ask me $1700 for a used transmission + $1500 labor. I'm new in town and I have no idea who this guy is. I would like to hear your opinion. Thank you so much.

by in Tuscaloosa, AL on June 20, 2009
2 answers
ANSWER by on June 21, 2009
The cost of the used trans sounds ok but $1500 means about 15 hours of labor, which is way too steep. It should be about $600-700 in labor ( 6-7 hours). It does sound like your transmission has a major problem if it won't shift or stay in gear.
ANSWER by on April 28, 2010
probably we have the same problem .it seam that you need to change the transmission conductor plate that's cost ~ $280
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