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

limp mode

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Old Jan 23, 2018 | 08:44 PM
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2000 s500
limp mode

2000 s500 is stuck in limp mode and wont change from Winter to Sport modes...HELP!
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Old Jan 23, 2018 | 09:39 PM
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Originally Posted by dez305
2000 s500 is stuck in limp mode and wont change from Winter to Sport modes...HELP!
not enough detail to help you
did you pull codes ?

most likely your 13 pin transmission electrical connector has leaked and allowed fluid to enter the TCU, start by cleaning the TCU and getting a new connector , conductor plate and filter
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Old Jan 23, 2018 | 09:44 PM
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Pulling codes would be the first order of business. If there is any hint that the problem is with the TCU, I would try just cleaning the TCU first...

There are several threads on pulling it from the right SAM and washing it with brake cleaner or similar solvent.
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Old Jan 24, 2018 | 08:14 AM
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Buy a transmission dipstick too, find the procedure on line (it's very specific) and check the fluid level.

Nick
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Old Jan 24, 2018 | 09:26 AM
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Good point, Nick!
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