mihir_d

Hey all, My 2006 SLK 350, 66,000 miles....transmission started shifting into wrong gears at wrong times 2 days ago without warning or any light on the dash...Drove it to dealer - Conductor plate/speed sensor needs to be replaced. $1600 estimate.

Seems like, I am not alone. The forums are riddled with this episodes of failing conductor plates.

All 2005-2006 and 2007 C, E, M, SLK, S, SL CLK and 2007 GL fitted with the new 7G tronic transmissions (722.9) are experiencing this same consistent premature failure.

Just started a conversation with MBUSA in the hope of getting good will for this job. Why are they not recalling this transmission.

I have a 2000 ML320 as my 2nd ride with the (722.5) 5g tronic transmission that just rolled 200,000 miles with ZERO power train issues so far in 15 years.

Wen

same here,
My transmission die when I JUST got off (500 ft) of the highway! I was lucky.


now I'm stuck with a freak bill for a few grands

johnxyz

I'm interested in a used W171 SLK - do you know if Mercedes fixed / upgraded the transmission after 2007? Just limited to '05-'07? Thanks

mihir_d

I believe the 2008-2011 are less prone to this problem, but people on the M, C, E and S class (which uses the same 7G-tronic transmission as the SLK) forums are certainly reporting this very same problem at higher miles on the 2008-2011 model years as well.

I am guessing, because, SLKs are gnerally driven less, the 2008-2011 SLK problems could surface later down the road.

Post 2012, the next generation to 9G-tronic transmission was introduced...hope that helps!