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S-Class (W220) 1999-2006: S 320 CDI, S 320, S430, S 500, S 600

I'm new and having transmission problems

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Old Oct 24, 2018 | 05:12 PM
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Mike827's Avatar
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S430
I'm new and having transmission problems
Hello everyone, I just recently purchased a used s430 that had transmission problems. Replaced the tcm and 13 pin connector. Had a code of p0702 and p0600. Had a shop do a transmission fluid change and filter, but car still shift very hard up and down. The car also slip out of gear when it reaches 4th gear. But when the car slows down and down shifts to 3rd it engages and drive in 3rd gear. Has my 4th gear gone bad? I cant get past 4th gear to see if 5th gear is working. 5th gear does not register when I manually shift as well. Is it the solenoid for 4th gear bad? If I manually set the shifter to 3rd it cycles throw all gears (1st 2nd ). Do I need to just purchase a whole new transmission or a new valve body and conductor plate?
Last edited by Mike827; Oct 25, 2018 at 11:59 AM.
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Old Oct 24, 2018 | 05:16 PM
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2003 CL 600
Do the conductor plate next, was the TCM full of oil before?
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Old Oct 24, 2018 | 05:23 PM
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No it was not, but the mechanic did say that the o rings around the 13 pin connector damage and oil was leaking into the connector.
Last edited by Mike827; Oct 24, 2018 at 05:33 PM.
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Old Oct 25, 2018 | 03:31 AM
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Depends if you want to spend $150 on a conductor plate and you might still have problem , or get a good used transmission for $300
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