Go Back  MBWorld.org Forums > Mercedes-Benz Sedans > E-Class (W213)
Radar sensors causing brakes to lock >

Radar sensors causing brakes to lock

Notices
E-Class (W213) 2016 -

Radar sensors causing brakes to lock

 
Old 01-28-2019, 04:03 PM
  #1  
Newbie
Thread Starter
 
Join Date: Jan 2019
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
E220 estate W213
Radar sensors causing brakes to lock

Hi there. I got a E220 estate September 2017 (W213) which has been basically fine. On occasions it locked up when I was driving and I took it back. The first time they replaced a sensor but it did it again so I took it back in. They say that the sensors were set to go off from too far away and there is no fault with the car. They also say that if it happens again I would have to demonstrate it to a technician. So I have a car which has locked up when I am passing an articulated lorry at 60mph and it is my fault! Surely this is dangerous to have too sensitive sensors in the car or am I missing something?
David Alcorn is offline  
Old 01-28-2019, 09:56 PM
  #2  
MBWorld Fanatic!
 
2012 merc amg's Avatar
 
Join Date: Jul 2013
Location: Venice Florida
Posts: 2,531
Thanked 136 Times in 122 Posts
2019 E450 Cabriolet and 2019 E450 Wagon.
There is a setting for Sensitivity of this under the Assistance settings. I just leave mine in the middle under medium and have had no issues.
2012 merc amg is offline  
Old 01-29-2019, 05:59 AM
  #3  
Newbie
Thread Starter
 
Join Date: Jan 2019
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
E220 estate W213
Originally Posted by 2012 merc amg View Post
There is a setting for Sensitivity of this under the Assistance settings. I just leave mine in the middle under medium and have had no issues.
Thanks for replying. The owner’s manual says that the brakes should only lock at the same time as the audible warning under “exceptional driving circumstances” but this has happened 5 times in normal conditions. My wife won’t drive it.
David Alcorn is offline  
Old 01-29-2019, 10:25 AM
  #4  
Senior Member
 
nycebo's Avatar
 
Join Date: Nov 2014
Location: New York, NY
Posts: 443
Thanked 31 Times in 25 Posts
Mercedes Benz e450 Wagon / Porsche 911 Cabriolet
I had this issue as well. I changed it to "early" and have not had the issue since.
nycebo is offline  
Old 01-29-2019, 12:03 PM
  #5  
Newbie
Thread Starter
 
Join Date: Jan 2019
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
E220 estate W213
That’s interesting. I have found that when the car has been passing another car, lorry or object on the left side of the car, this is when the car has locked up. It seems to me that taking the settings away fro “early” is just hiding a fault in that the sensor is too sensitive and is dangerous.
David Alcorn is offline  
Old 01-30-2019, 06:04 AM
  #6  
Senior Member
 
stephos's Avatar
 
Join Date: Nov 2018
Location: UK
Posts: 393
Thanked 34 Times in 33 Posts
MY19 E450 4MATIC Coupé
Originally Posted by David Alcorn View Post
That’s interesting. I have found that when the car has been passing another car, lorry or object on the left side of the car, this is when the car has locked up. It seems to me that taking the settings away fro “early” is just hiding a fault in that the sensor is too sensitive and is dangerous.
Agreed. I'm inclined to think there's a dodgy sensor in play here.
stephos is offline  
Old 02-01-2019, 01:55 PM
  #7  
Member
 
Join Date: Dec 2017
Posts: 135
Thanked 9 Times in 8 Posts
e300
It might be that in your country, the passing and driving style triggers the sensors to believe your going to crash but in reality your not. In America, we have big roads, besides actually going to crash, the sensors won’t throw a false brake.
mobster600 is offline  
Old 02-02-2019, 12:42 PM
  #8  
Newbie
Thread Starter
 
Join Date: Jan 2019
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
E220 estate W213
Originally Posted by stephos View Post
Agreed. I'm inclined to think there's a dodgy sensor in play here.
Funny you should say that as the one on the passenger side was replaced when it was in in August. Every time the braking has been activated it has been when something was in my left hand side. Never on the right.
David Alcorn is offline  
Old 02-02-2019, 12:49 PM
  #9  
Newbie
Thread Starter
 
Join Date: Jan 2019
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
E220 estate W213
I’m not sure what driving style won’t trigger, but. I don’t have much confidence in a garage that just checks if there’s a fault (they say there isn’t) then changes the settings of brake assist to the late or close setting and tells me it’s fine. Surely if it is fine, they could leave the car on any setting?
I'm going in on Monday morning to have a drive with a diagnostic technician (I presume that’s a mechanic) so I will maybe find out more then.
David Alcorn is offline  
Old 02-04-2019, 07:24 AM
  #10  
Senior Member
 
stephos's Avatar
 
Join Date: Nov 2018
Location: UK
Posts: 393
Thanked 34 Times in 33 Posts
MY19 E450 4MATIC Coupé
Stick to your guns on this one David. The dealer needs to isolate the problem and fix it.

If they can't or wont, then try another dealer.

The problem you describe is quite dangerous for you and others potentially. Totally not acceptable.
stephos is offline  
 

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

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Radar sensors causing brakes to lock


Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: