SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Should I start looking for fire a new trans?

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Old 07-22-2024, 09:06 PM
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2006 SL55 2007 ML320
Should I start looking for fire a new trans?

So, last summer my trans would drop out of off gear when the car was fully warmed up. When it cools down it would drive again. I put in a new conductor plate and all was fine. There was a lot of metal chips in the pan and on the plate. I cleaned it all and hopped for the best. Well yesterday it happened again. I dropped the conductor plate again and this is what I saw. It's only about 300 miles after I cleaned and installed the conduct plate.
I'm sure it's excessive amount of metal.

Is this the end for it?

Is so, any suggestions for where get one?
​​​​​​Thank you for any input.
Don





Old 07-23-2024, 10:06 AM
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'03 SL55 Black, '03 SL500's Aegean, Mars Red, Tazanite, Alabaster, '11 S550 Flint Gray
I would find a good local shop to evaluate and probably go through it. The NAG1 is pretty common, so any decent shop should be able to handle a rebuild.
Old 07-23-2024, 10:37 AM
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I would be fine sourcing a used one, they rarely fail, and are pretty cheap
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Don Butts (07-23-2024)
Old 07-23-2024, 11:41 AM
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Originally Posted by MikeJ65
I would find a good local shop to evaluate and probably go through it. The NAG1 is pretty common, so any decent shop should be able to handle a rebuild.
Thank you for the reply. I am planning on doing an upgrade on engine soon. Can you suggest some upgrade to have done on trans?
Old 07-23-2024, 02:19 PM
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'03 SL55 Black, '03 SL500's Aegean, Mars Red, Tazanite, Alabaster, '11 S550 Flint Gray
The SL55 build is really a pretty good base to start with. A good builder will probably suggest a few upgrades, but it should not require a lot of modifications.

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