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What is this Box under my dash?

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Old Mar 3, 2024 | 05:16 PM
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Phoenix222's Avatar
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2012 c250 w204
What is this Box under my dash?

So I can't even remember what I was down there looking but I was under my dash near the pedals and noticed this little black box with a light on it. Any ideas as to what this is? It's plugged into this small blue plug? It's on a 2012 C250 and no info on the box itself that I could tell from looking at it.
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Old Mar 3, 2024 | 05:23 PM
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2011 C300 Sport, P1, MM, Wood, Heated FS, DIY rearview camera.
Probably an aftermarket device?
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Old Mar 3, 2024 | 05:27 PM
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2012 c250 w204
That's what I was thinking. It doesn't look like anything critical. Maybe a security thing?
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Old Mar 5, 2024 | 02:21 AM
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
Does your steering wheel lock when the key is out. If not, maybe it’s an ESL emulator.
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Old Mar 5, 2024 | 08:33 PM
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W204 2010 C300 4matic Sport M272
Could be.


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Old Mar 5, 2024 | 10:38 PM
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2012 c250 w204
Yeah that's exactly what it is. Thank you guys!
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Old Mar 8, 2024 | 11:09 AM
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Mercedes w204 4matic sport
Originally Posted by Phoenix222
That's what I was thinking. It doesn't look like anything critical. Maybe a security thing?
is it connected to the gas pedal connector?
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Old Mar 14, 2024 | 10:45 PM
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2009 C-300
Definitely ESL emulator and you are lucky someone already had this done for you. Pain when the ESL goes out and expensive to do. i did my own and after not being able to find anyone who would do it for me. Dealership wanted to replace for big $$$
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Old Mar 15, 2024 | 08:22 AM
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Mercedes w204 4matic sport
Originally Posted by TaosDave
Definitely ESL emulator and you are lucky someone already had this done for you. Pain when the ESL goes out and expensive to do. i did my own and after not being able to find anyone who would do it for me. Dealership wanted to replace for big $$$
not sure it’s an ESL emulator, op will have to post a pic, I don’t know why he hasn’t. Even if it’s an emulator it would go where the original ESL would be on the steering column, that’s how mine is. And yes, it is a pain. Personally, for the price the emulator is better then rebuilding the original or buying a new one, you won’t have the issue of the column locking up again if it goes bad again.
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