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  #1  
Old 09-24-2009, 12:36 PM
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W220 Trouble Code Question

Looking at a 2002 S55, and had a PPI done at my local dealer.

Typical results - mostly non-worrisome, with the exception of 2 transmission related codes:
P2001 and P2602. 2001 is something about the TCM being shot, and 2602 has something to do with "valves".

No messages about transmission issues in the display, and car drives exceptionally in all modes and under all conditions.

Any ideas?

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  #2  
Old 09-24-2009, 04:12 PM
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Both are related to the trans computer, was that ECU checked for fluid migration from connector?

Trans computer should cost $750-1000 installed.
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  #3  
Old 09-24-2009, 06:01 PM
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They mentioned the deal about the connector and fluid migration. What's the service route if there is fluid found?

Also - is this an owner-replaceable part? I know where it's installed, and AllData shows the replacement method.

What I don't know about is resetting codes, etc.

Can an OBDII code reader reset these kind of codes?
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  #4  
Old 09-25-2009, 11:11 AM
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Trans computer replacement requires coding, and ODB2 scanners can't do that.
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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator
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  #5  
Old 09-25-2009, 11:13 AM
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What's the service procedure if fluid migration is detected?

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