Transmission Question - Mercedes Benz SLK Forum

SLK R172 General Discussion Discussion regarding the Mercedes SLK R172

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#1 Old 01-03-2019
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Transmission Question

Being new to MB ownership, I was reading about the extensive 7 speed auto transmission problems, apparently involving the valve body and eventual class actions law suits, etc. My question is what year models was this most prevalent in? Has it been "evolved" out?
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#2 Old 01-03-2019
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Originally Posted by Jimbeaux View Post
Being new to MB ownership, I was reading about the extensive 7 speed auto transmission problems, apparently involving the valve body and eventual class actions law suits, etc. My question is what year models was this most prevalent in? Has it been "evolved" out?
That was for the r171. You have a r172
Completely different engine
Issue was with M272/M271 engine

You have a M276 I believe


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#3 Old 01-03-2019
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Originally Posted by jbanks15 View Post
That was for the r171. You have a r172
Completely different engine
Well that is good to know but I thought the transmission, not the engine was the problem? The 722.9 or some such, used from 2003-2012 iirc.
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Never any issue with the transmission

r171 had issues with balance shaft/oil consumption and conductor plate


read of balance shaft here:

https://www.slkworld.com/slk-r171-ge...m272-m273.html

oil here:

https://www.slkworld.com/slk-r171-ge...-stickied.html

conductor plate:

https://www.slkworld.com/slk-r171-ge...e-threads.html

get your free gift here:

https://www.slkworld.com/vehicle-dat...-datacard.html


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#5 Old 01-03-2019
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Thanks for that Sir!
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As long you change the oil and the filter in the gearbox at 40k miles you should b some extra magnets in the pan.
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#7 Old 01-03-2019
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As long you change the oil and the filter in the gearbox at 40k miles you should b some extra magnets in the pan.
I may do that. I do not have the maintenance schedule in front of me, does it call for a transmission fluid change at 40,000?
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Originally Posted by Jimbeaux View Post
I may do that. I do not have the maintenance schedule in front of me, does it call for a transmission fluid change at 40,000?
Yes..........


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#9 Old 01-03-2019
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Service at 40,000 miles or 4 years
Required Service Work (continued)

Automatic transmission - oil and filter change R R R R R R R R R R R R
Transfer case


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