E-Class (W212) 2010 - 2016: E 350, E 550
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Car changes from automatic to manual by itself

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Old Dec 5, 2023 | 07:01 AM
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Question Car changes from automatic to manual by itself

Hi All,

Does anyone have an issue with your transmission changing in mid drive from automatic E or Sport S to manual on it's own & if so is there a fix or is it a big problem?????
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Old Dec 5, 2023 | 09:57 AM
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From: South West of France.
2010 E550(S212), 2006 Chrysler Crossfire (SLK 320 R170 in disguise), 2012 CLS500 (x218)
IIRC on these models if you use the down shift padle it will go to manual mode and switch back to auto after a while.
I'm not aware of any other stuff on that so I won't be of much help but it may be a starting point for diagnostics.
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Old Dec 5, 2023 | 01:31 PM
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W212 MY'14 M276-3.5NA @75kMi
upset tranny

Originally Posted by craig9162
Hi All,

Does anyone have an issue with your transmission changing in mid drive from automatic E or Sport S to manual on it's own & if so is there a fix or is it a big problem?????
​​​​​​You are doing well by not ignoring stuff like that early on.


This does not happen commonly. I can think of a few reasons (SCM, LIN) this can go wonky.

Do yourself a favor and scan your car with a Launch Creader Elite or similar to retrieve fault codes.

Can you get your tranny back in auto mode easily by pressing buttons or does it not want to do that ?

When was last ATF oil service?
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Old Dec 5, 2023 | 03:11 PM
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It does go back to automatic when I press the right paddle for two seconds.

Originally Posted by CaliBenzDriver
​​​​​​You are doing well by not ignoring stuff like that early on.


This does not happen commonly. I can think of a few reasons (SCM, LIN) this can go wonky.

Do yourself a favor and scan your car with a Launch Creader Elite or similar to retrieve fault codes.
Spoiler
 

When was last ATF oil service?
Don't know. I'm going to bring it in though. I only own it for two weeks.

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Old Dec 5, 2023 | 03:26 PM
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W212 MY'14 M276-3.5NA @75kMi
minor issue

Originally Posted by craig9162
Don't know. I'm going to bring it in though. I only own it for two weeks.
You have the details clearly highlighted. You will be well served.
🤞
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Old Dec 6, 2023 | 04:01 AM
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2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid
Read here, post #4 : https://mbworld.org/forums/e-class-w...ml#post8887965
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