Rough Shifting of Automatic Transmission on Mercedes-Benz SLK280

Vehicles equipped with a 7-speed automatic transmission may develop a rough shifting condition, most commonly going up from first to second gear and going down from third to second or second to first gear. Our technicians tell us this is due to an internal component failure. Mercedes has released updated parts; the transmission will need to be removed and disassembled to complete the necessary repairs.

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Average mileage: 71,622 (44,000–110,000)
3 model years affected: 2006, 2007, 2008
12 people reported this problem
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Viewing 1 - 6 of 6 problem details
2006 Mercedes-Benz SLK280 60,000 mi,
it's suddenly rough shift with very high RPM... what should I do?
2006 Mercedes-Benz SLK280 71,000 mi,
Transmission speed sensor and car stuck in limp mode.
2008 Mercedes-Benz SLK280 110,000 mi,
Rough downshift 2nd to 1st especially when cold.
2007 Mercedes-Benz SLK280 69,585 mi,
Transmission made a loud noise then it completely failed.
2006 Mercedes-Benz SLK280 72,020 mi,
The check engine light appeared and it would not shift out of first gear. I was t able to drive more than 30 miles per hour after being stuck out on interstate with no warning. I had the transmission flushed and it cleared the problem for approximately 2 months to find myself with the same problem. Mercedes has this particular problem under their own manufacture that allows only them to provide the part and repair. With spending two bills and time to flush the transmission and still the same problem. I should have taken it to the dealer in the beginning. I love my SLK and would buy another even with the scheduled maintenance being a little costly.
2006 Mercedes-Benz SLK280 44,000 mi,
When driving around 50 mph and then suddenly having to stop it feels like someone has rear ended me the down shift is very strong.