S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Transmission help

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Old Jun 1, 2020 | 11:45 PM
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Transmission help

hey guys, I have a 2009 s550 4matic, when I put it in drive it won't catch and only revs up. This happens in every gear really, no noise. My friend says it's slipping, help please.


Last edited by MB CHS; Jun 1, 2020 at 11:55 PM.
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Old Jun 2, 2020 | 02:16 PM
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2009 S550
Are there any lights on the dash? Did you scan the car with a Star or at least OBD II scanner?
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Old Jun 2, 2020 | 05:46 PM
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Yes two codes P0101 and P0101pd. The car has electrical issues such as no park assistance, the center screen won’t turn on so no music and the vehicle won’t rise when I press the button.
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Old Jun 2, 2020 | 05:53 PM
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Originally Posted by MB CHS
hey guys, I have a 2009 s550 4matic, when I put it in drive it won't catch and only revs up. This happens in every gear really, no noise. My friend says it's slipping, help please.
start with a adaptation reset
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Old Jun 3, 2020 | 12:07 AM
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2009 S550
These codes are for a MAF sensor. They are not related to the transmission. It sounds however that you have a more complex electronic problem. Did you check the voltage of your battery?
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Old Jun 3, 2020 | 12:28 AM
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Does it actually show that the transmission is in "DRIVE"??? If it does, you have some internal issues in the transmission.
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Old Jun 4, 2020 | 08:23 PM
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2007 mercedes s550
Will a lo

low battery not make the car move even when it's in Drive ?
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Old Jun 24, 2020 | 04:53 AM
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Turns out it only had two quarts of trans fluid in it. Now it’s on limp mode because after the change my dumb *** put it in drive too fast, abs & esp came on. I’ve already driven it several times, does anyone have any suggestions/input on how I can take it off limp mode?

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Old Jun 24, 2020 | 05:38 AM
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Never tried but without anything, disconnecting the batteries for 5-10 min should work
then other than that with any 15$ OBD plug and IOS or Android app version like Torque. with first economy scanners like icarsoft
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Old Jun 24, 2020 | 06:00 AM
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I clear codes but abs & esp are persistent. I’m thinking I sent it in to dreaded electronic limp mode.
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Old Jun 24, 2020 | 06:04 AM
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Originally Posted by MB CHS
I clear codes but abs & esp are persistent. I’m thinking I sent it in to dreaded electronic limp mode.

some codes can not be cleared with cheap scanners

try the battery method
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Old Jun 24, 2020 | 06:45 AM
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Done that I’m thinking it might be a module, I checked every single fuse and they are all good.
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