transmission will not shift gears until it get hot.
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1999 Mercedes-Benz E320 Question: leroy
Answer #1patrick mannion from Greg Solow's Engine Room, February 10, 2011, 23:13Master
Check the transmission oil level but it sounds like an internal transmission problem. Best have a transmission shop or Mercedes specialist look at the car.
I agree with Patrick, I have two transmission shops in Houston. Either shop will check your vehicle for free so that you can decide what to do.