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Distronic plus issues

Old Nov 21, 2015 | 03:06 PM
  #1  
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2015 C400 4Matic Black
Distronic plus issues

I have a 2015 C400.
Driving down the highway with distronic plus set at 115kms/hr, every thing working fine when I get the following error in the cluster display,
"radar sensors dirty, see user manual" then 2-3 minutes later It will come back with "Distronic plus available" and I can reactivate cruise.
Happened about 8 times over the last 2 months.
Front of vehicle is perfectly clean, absolutely no bugs or dirt on any of the front bumper sensors or the center grill emblem. Car had been washed and dried the previous week and kept in heated parking.
Road conditions were perfect with no rain, snow or dust.Slightly overcast and about 10 deg celcius.

Any thoughts before I book a service call with Mercedes ?
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Old Nov 22, 2015 | 04:30 AM
  #2  
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If all sensors are clean (cameras on windscreen, parking sensors and the main radar sensor behind the star on radiator grille) then this has to be a dealer job now, likely a faulty sensor.
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Old Feb 8, 2016 | 07:27 PM
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Originally Posted by tomdeis
I have a 2015 C400.
Driving down the highway with distronic plus set at 115kms/hr, every thing working fine when I get the following error in the cluster display,
"radar sensors dirty, see user manual" then 2-3 minutes later It will come back with "Distronic plus available" and I can reactivate cruise.
Happened about 8 times over the last 2 months.
Front of vehicle is perfectly clean, absolutely no bugs or dirt on any of the front bumper sensors or the center grill emblem. Car had been washed and dried the previous week and kept in heated parking.
Road conditions were perfect with no rain, snow or dust.Slightly overcast and about 10 deg celcius.

Any thoughts before I book a service call with Mercedes ?
I got the same "Radar sensors dirty" message during a snow storm drive from New York to Boston today. Distronic plus, and Parktronic didn't work. The warning message was correct. The sensors were so covered with ice that I couldn't remove it without damaging the sensors. I had to wait for it to melt.












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Old Feb 9, 2016 | 12:46 AM
  #4  
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From: Eastern Massachusetts
2021 E450, 2020 C43, 2015 C300, 2007 C280
Originally Posted by BenzC400
I got the same "Radar sensors dirty" message during a snow storm drive from New York to Boston today. Distronic plus, and Parktronic didn't work. The warning message was correct. The sensors were so covered with ice that I couldn't remove it without damaging the sensors. I had to wait for it to melt.
Same thing happened to me. Interstate speeds, slush kicked up by the car ahead. I could just wipe it off when I got home.
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Old Feb 10, 2016 | 11:44 PM
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15 Mercedes C400, 12 Mercedes C250 coupe
Originally Posted by BenzC400
I got the same "Radar sensors dirty" message during a snow storm drive from New York to Boston today. Distronic plus, and Parktronic didn't work. The warning message was correct. The sensors were so covered with ice that I couldn't remove it without damaging the sensors. I had to wait for it to melt.




wow, just wow. lol
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Old Feb 11, 2016 | 10:03 AM
  #6  
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2016 AMG C63S, Lamborghini Gallardo, 2016, A-class 180
Yeah dirt and ice blocks the signals. usually the case.
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Old Jun 3, 2016 | 10:46 PM
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Hi Guys,

I was driving home last night at 110km/h and drover though.some pretty heavy rain.

The car did well but then I got the Radar Sensors Dirty error message.

Given it was heavy rain and not sleet or snow.

Is this dealer fixable?
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Old Nov 19, 2019 | 01:39 AM
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From: Norway
2015 S205 AMG
Originally Posted by BenzC400
I got the same "Radar sensors dirty" message during a snow storm drive from New York to Boston today. Distronic plus, and Parktronic didn't work. The warning message was correct. The sensors were so covered with ice that I couldn't remove it without damaging the sensors. I had to wait for it to melt.












Hi
We also have the same problem here in Norway,But i was just thinking if its enough to connect somekind of a heater on the backside of the star, to melt the snow/slush?
Amazon Amazon
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