C Class (W205) C 180 BlueTec,C 200 BlueTec,C 220 BlueTec,C 220 BlueTec BlueEfficiency,C 250 BlueTec,C 300 BlueTec Hybridplus,C 180,C 180 BlueEfficiency,C 200,C 250,C 300,C 400 Plug-in Hybrid,C 400

BRAKE LIGHT ALWAYS ON - Error C107D86 & C1000FF

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jan 10, 2026 | 04:52 PM
  #1  
atamuratov's Avatar
Thread Starter
Newbie
 
Joined: Jan 2026
Posts: 1
Likes: 0
BRAKE LIGHT ALWAYS ON - Error C107D86 & C1000FF

FYI!

s205 (w205) c180 WDD2052402F253353

The car was parked for several days in cold and wet weather. When I started it up, I saw the following warning.



I checked the exterior lighting and saw that all the brake lights were on all the time.

I read the errors, they were as follows: C107D86 (n10/8) / C1000FF (n30/4)

I tried to turn off the taillight chips (right and left) to no avail. Also, I tried resetting the errors - after resetting the errors, the rear brake lights do not light up, but as soon as I press the brake pedal, they light up again and do not turn off.

Perhaps someone has encountered such errors? Can you tell me how to proceed? Someone says that there is a problem with the esp. I have completed all the input checks in the esp, there are no problems with it.
Reply
Old Jan 10, 2026 | 05:53 PM
  #2  
CaliBenzDriver's Avatar
Out Of Control!!
Community Builder
Community Influencer
Liked
Community Favorite
 
Joined: Apr 2019
Posts: 12,058
Likes: 6,856
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
parked faults collection

Do you have the description of these faults ?
This will help you focus without replacing random parts.

How is your battery chargeevel?
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 03:45 PM.