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E-Class (W213) 2016 - 2023

Distronic radar issue

Old Nov 9, 2025 | 01:03 PM
  #1  
Mikefil's Avatar
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W213 2017
Distronic radar issue

Hi everyone
I have a 2017 E200 with distronic and steering assist
Lately I started to get an error message after driving for some time: Radar sensors dirty see operator's manual

So I thought that cleaning the radar sensor would be a smart move
I took off and unplugged the star, and cleaned it from both sides and then decided to clean fhe radar, so I took it off and disconnected it
Once I put everything back and started the car I got three new error messages

active distance assist inoperative
active blind spot inoperative
active brake assist functions limited

Is there anything I can do to get it fixed? Maybe it needs programming?

Our local MB dealership looks like a hut, really not sure these guys could fix something this sophisticated

My radar sensor, very clean now😃
My radar sensor, very clean now😃
Official MB Service Centre in Paphos, Cyprus
Official MB Service Centre in Paphos, Cyprus

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Old Nov 10, 2025 | 07:06 PM
  #2  
My2018_W213's Avatar
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Mercedes E300 4Matic, Honda Accord.
Check the alignment of the star (front emblem). Mine was pushed in (towards the radiator) like 10 mm at the bottom, giving me the "active blind spot inoperative" and "active brake assist functions limited" errors. Both errors were gone after pushing out the front emblem to like before it got pushed in.
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Old Dec 8, 2025 | 08:50 AM
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Mikefil's Avatar
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W213 2017
Thanks for the answer, indeed I aligned the star badly.
However the 'Radar sensor dirty' message shows up every time
I already cleaned the windscreen where the stereo camera is on both sides and the camera as well
The radar and the star are also clean
Does it involve any other sensors for the use of distronic?
Thanks
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