Mercedes Tech Talk Discuss general technical questions and issues about your Mercedes-Benz. Moderated by a certified MB Tech.
Sponsored by:
Sponsored by:

Emergency Braking System Malfunctions

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 05-27-2023, 07:19 PM
  #101  
Out Of Control!!
 
W205C43PFL's Avatar
 
Join Date: Dec 2019
Location: Yours to Discover
Posts: 13,375
Received 2,501 Likes on 2,128 Posts
PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by bigkevo
Driving on a straight road at 50mph and suddenly the brakes slammed on causing us to swerve left and right before luckily straightening up. My wife and I were sure we were going to crash. If we had been going much quicker this would likely have flipped the car.
Sorry to hear it happened the good thing is I believe MB's systems will compensate to ensure a roll-over won't happen despite that type of braking.
Old 09-11-2023, 11:39 AM
  #102  
Junior Member
 
DaveRRR's Avatar
 
Join Date: Feb 2023
Posts: 16
Received 1 Like on 1 Post
C300 4Matic, DX1 Trim, AMG line, Panoramic roof, Black paint with grey interior
2023 C300 - same problem

I’ve experienced this twice as well on a 2023 with 8000 mi. It had never “misread” the situation before but did twice in a 10 day period. The car was clean on both instances. Dealer says this is a common complaint with no solution. I’m as worried about the unexpected braking (especially at higher speeds) as I am about being responsible for a person running into me due to a system deployment in error. Really doubt Mercedes will cover the damages….
Old 11-12-2023, 07:31 PM
  #103  
Newbie
 
Fern one's Avatar
 
Join Date: Jun 2017
Posts: 4
Received 0 Likes on 0 Posts
Benz s550 coupe 2017
Drive a 2022 s500 .,Had same issue in last six weeks Glad no one was close to the rear of my auto..scared the ——out of me
Old 11-12-2023, 07:35 PM
  #104  
Newbie
 
Fern one's Avatar
 
Join Date: Jun 2017
Posts: 4
Received 0 Likes on 0 Posts
Benz s550 coupe 2017
Add me to your list
Old 11-22-2023, 08:49 AM
  #105  
Newbie
 
GMeehan's Avatar
 
Join Date: Nov 2023
Posts: 1
Received 0 Likes on 0 Posts
EQS580
phantom braking

[QUOTE=CB949;7833418]Hi All

I am the owner of a 2018 e400 wagon. My vehicle has persistent "false alarm" activation of the radar-driven safety systems, including the emergency braking system.

I'm in communication with MBUSA on these issues. Their position is that the system is "operating as designed" and they are refusing to take action. They are also telling me that mine is an isolated incident, which I know to be untrue from other forum members sharing their same issues.

What I'd like to try to do is get more visibility into how much this is occurring. I've seen at least 3 other members with the same issue just in the E-class forums, and a few scattered around other models. Maybe if we get a large enough group together, who are all experiencing these issues, we can get MBUSA to step up and do the right thing - before someone gets seriously injured, or worse, by these issues.

So if you are experiencing these issues - false alarms, sudden braking, the system killing the accelerator because it thinks there's an obstacle - please post below, and we will try to get some more attention focused on this serious issue.


Current list of members (as of Aug 28) who have experienced this issue and cited it in either this thread or another:


1. Me, e400 wagon
2. Sunrose 305, e300
3. Brittnie jane, C300
4. Diesel Dan, e550
5. RSnovi, glk250
6. DDgator, glc
7. Bert.DS glc350e
8. Senatov
9. Frandumont glc300 (dirty sensors?)
10. Mickhoog
11. The_Judge e400 coupe
12. sackboydad, e450 cab
13. Streamliner, s560
14. Absent, s560 (loaner)
15. Malmokalle, e class
16. MBZ2019, a class
17. Legume, e400 wagon
18. Darren Boey, C350e
19. Utsenmo, C300[/QUOTE
20. Gmeehan, EQS 580
Old 11-22-2023, 11:03 AM
  #106  
MBWorld Fanatic!
 
superpop's Avatar
 
Join Date: Nov 2015
Location: Newcastle, WA
Posts: 1,410
Received 542 Likes on 376 Posts
2019 S63 4Matic+, 2018 E400 Cabrio, wardens car.
I had this issue on my 2019 S63. They did finally fix it after 3 trips to 2 different dealers. On my car it was one of the rear radar sensors. It has worked fine since the replacement of the sensor though.
Old 12-15-2023, 02:34 PM
  #107  
Newbie
 
MsAnnie's Avatar
 
Join Date: Dec 2023
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
GLS 450 2022
2022 GLS 450 Suddenly braked

I had the most terrifying experience happen two weeks ago. I was driving 25 mph, didn't have any cars behind or in front of me. The car locked up, immediately stopped. Like hitting a brick wall, instantly stopped.

Truly terrifying. Dealer acting like it was a tire issue, not their fault, etc. Has anyone had this resolved through Mercedes? I basically am petrified to drive this car ever again.
Old 12-15-2023, 03:26 PM
  #108  
Junior Member
 
luciferclefcapr's Avatar
 
Join Date: Jun 2022
Posts: 34
Received 7 Likes on 6 Posts
W206 C200
Mine (W206 from 2021) is still doing this, and I have not heard about a permanent fix here in The Netherlands. Multiple Merc dealers are telling me that software updates etc should solve it, up until now numerous software updates further the problem still exists. However, turning off "Close Range Braking" solved the issue that the cars come to a standstill, which is indeed a very terrifying experience. It still detects phantom cars or pedestrians regularly when using the Adaptive Cruise Control, beeps at me very loudly, and starts to slow down but then realizes there is nothing there and resumes the Adaptive Cruise Control speed. You can see this process happening when you have the Driving Assistant view selected in the digital driver display. It will mark the area in front of the car red, start yelling at me, and start slowing down but then that red area goes away almost immediately and it comes to its senses and resumes the set speed.

My advice, turn off close-range braking, keep sensors clean, and (for me) no more Mercedes. Before this, I had the VW Passat and Ford Mondeo, both with the Active Brake Assist and Adaptive Cruise control option, but never had this happen.
Old 12-21-2023, 11:43 AM
  #109  
Newbie
 
Israel10's Avatar
 
Join Date: Dec 2023
Posts: 3
Likes: 0
Received 1 Like on 1 Post
Mercedes EQS 450+
Originally Posted by CB949
Hi All

I am the owner of a 2018 e400 wagon. My vehicle has persistent "false alarm" activation of the radar-driven safety systems, including the emergency braking system.

I'm in communication with MBUSA on these issues. Their position is that the system is "operating as designed" and they are refusing to take action. They are also telling me that mine is an isolated incident, which I know to be untrue from other forum members sharing their same issues.

What I'd like to try to do is get more visibility into how much this is occurring. I've seen at least 3 other members with the same issue just in the E-class forums, and a few scattered around other models. Maybe if we get a large enough group together, who are all experiencing these issues, we can get MBUSA to step up and do the right thing - before someone gets seriously injured, or worse, by these issues.

So if you are experiencing these issues - false alarms, sudden braking, the system killing the accelerator because it thinks there's an obstacle - please post below, and we will try to get some more attention focused on this serious issue.


Current list of members (as of Aug 28) who have experienced this issue and cited it in either this thread or another:


1. Me, e400 wagon
2. Sunrose 305, e300
3. Brittnie jane, C300
4. Diesel Dan, e550
5. RSnovi, glk250
6. DDgator, glc
7. Bert.DS glc350e
8. Senatov
9. Frandumont glc300 (dirty sensors?)
10. Mickhoog
11. The_Judge e400 coupe
12. sackboydad, e450 cab
13. Streamliner, s560
14. Absent, s560 (loaner)
15. Malmokalle, e class
16. MBZ2019, a class
17. Legume, e400 wagon
18. Darren Boey, C350e
19. Utsenmo, C300
20. Izzy, Mercedes EQS 450+
Old 12-21-2023, 11:55 AM
  #110  
Newbie
 
Israel10's Avatar
 
Join Date: Dec 2023
Posts: 3
Likes: 0
Received 1 Like on 1 Post
Mercedes EQS 450+
Hello. I have experienced this issue with my 2022 Mercdes EQS 450+ and it only has 23,000 miles.

The car has the following issues since I purchased this vehicle from Aug 11, 2022 - Present time
  • While driving the vehicle 5-45 mph the vehicle brakes automatically on its own and has happened 7 times already. See video attached on minute 0:1:10.
  • Car doesn't turn on and lots of message errors are displayed in the dashboard. Ex: Malfunction, Brake malfuntion, Stop Brake error msg, Inoperable msg error and more. see pics attached please.
  • The driver side door handles pop up but it won't open the car. I have to wait 1 minute to be able to open the car, but when I open the car, the car won't start
  • The back right rear door handles pop up and when attempting to open the door, the door handles closes on its own.
  • Brakes yerk a bit and slips taking time to break. I would have to pump on the brake 2-3 times before brakes can start slowing the car down.
  • I sometimes can't open the trunk manually. I would have to use the remote control to open the trunk. Sometimes it works sometimes it doesn't
  • The computer of the vehicle does not communicate well with Electrify America giving me a Fail connection error and I am having to waste 2.5 hrs every time I go to charge 2-3 times a week. This has been re-occurring since I purchased the car.
  • While driving the car automatically stopped by braking abruptly and The gear shifted from Drive to Park to Reverse on its own while driving. This happened on Dec 1, 2023 at 1:48pm. You can see this on on a dash cam video i have saved in my external drive. This already caused someone to rear end me already.
Old 12-21-2023, 12:13 PM
  #111  
Newbie
 
Israel10's Avatar
 
Join Date: Dec 2023
Posts: 3
Likes: 0
Received 1 Like on 1 Post
Mercedes EQS 450+
Hello. I have experienced this issue with my 2022 Mercdes EQS 450+ and it only has 23,000 miles.

The car has the following issues since I purchased this vehicle from Aug 11, 2022 - Present time
  • While driving the vehicle 5-45 mph the vehicle brakes automatically on its own and has happened 7 times already. See video attached on minute 0:1:10.
  • Car doesn't turn on and lots of message errors are displayed in the dashboard. Ex: Malfunction, Brake malfuntion, Stop Brake error msg, Inoperable msg error and more. see pics attached please.
  • The driver side door handles pop up but it won't open the car. I have to wait 1 minute to be able to open the car, but when I open the car, the car won't start
  • The back right rear door handles pop up and when attempting to open the door, the door handles closes on its own.
  • Brakes yerk a bit and slips taking time to break. I would have to pump on the brake 2-3 times before brakes can start slowing the car down.
  • I sometimes can't open the trunk manually. I would have to use the remote control to open the trunk. Sometimes it works sometimes it doesn't
  • The computer of the vehicle does not communicate well with Electrify America giving me a Fail connection error and I am having to waste 2.5 hrs every time I go to charge 2-3 times a week. This has been re-occurring since I purchased the car.
  • While driving the car automatically stopped by braking abruptly and The gear shifted from Drive to Park to Reverse on its own while driving. This happened on Dec 1, 2023 at 1:48pm. This already caused someone to rear end me (Causing an accident )
for the record i dont drive with driver assist or auto pilot since my car does not have this capabilities since it was not designed by manifactured.

Last edited by Israel10; 12-21-2023 at 12:21 PM.
The following users liked this post:
ak194kt (12-22-2023)
Old 12-22-2023, 09:11 AM
  #112  
MBWorld Fanatic!

iTrader: (1)
 
JettaRed's Avatar
 
Join Date: Nov 2016
Location: Maryland, United States
Posts: 4,563
Received 1,621 Likes on 1,208 Posts
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Kinda makes me glad I have older Mercedes. I've not read through five pages of posts, so maybe this has been covered.

I recently had my Pre-Safe Brake functions and associated functions disabled when I tried to do a throttle position module (TPM) reset using iCarsoft. Maybe user error, maybe not, but the calibration of my radar unit for Distronic Plus was also reset, causing Distronic, Lane Assist, etc. to become inoperable. I had to recalibrate the horizontal and vertical sensors using XENTRY to restore all functions.

Has anyone checked their status using XENTRY? Check module A89.








Old 01-03-2024, 06:56 PM
  #113  
Newbie
 
isu1dmt's Avatar
 
Join Date: Mar 2010
Posts: 1
Received 0 Likes on 0 Posts
2008 E350
2016 E350. Brakes locked up twice as I was passing cars that were stopped in the left turning lane
Old 02-02-2024, 11:39 AM
  #114  
Newbie
 
jenij1221's Avatar
 
Join Date: Feb 2024
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
mercedes c300
I have a 2023 Mercedes C300 and today was the 2nd time this has happened. First time was about 1-2 months ago and I was turning left onto a busy street when it happened and there was oncoming traffic so it was a bit scary. Today it happened while turning left at a stop light, the brakes hit so hard that the front of my car bottomed out and scraped the street thankfully no one was behind me but was very scary as it happened in the middle of a busy intersection. Not sure if it's an issue with auto brake, collision detection, or the recent recall with the fuel pump possibly cutting power.


Originally Posted by CB949
Hi All

I am the owner of a 2018 e400 wagon. My vehicle has persistent "false alarm" activation of the radar-driven safety systems, including the emergency braking system.

I'm in communication with MBUSA on these issues. Their position is that the system is "operating as designed" and they are refusing to take action. They are also telling me that mine is an isolated incident, which I know to be untrue from other forum members sharing their same issues.

What I'd like to try to do is get more visibility into how much this is occurring. I've seen at least 3 other members with the same issue just in the E-class forums, and a few scattered around other models. Maybe if we get a large enough group together, who are all experiencing these issues, we can get MBUSA to step up and do the right thing - before someone gets seriously injured, or worse, by these issues.

So if you are experiencing these issues - false alarms, sudden braking, the system killing the accelerator because it thinks there's an obstacle - please post below, and we will try to get some more attention focused on this serious issue.


Current list of members (as of Aug 28) who have experienced this issue and cited it in either this thread or another:


1. Me, e400 wagon
2. Sunrose 305, e300
3. Brittnie jane, C300
4. Diesel Dan, e550
5. RSnovi, glk250
6. DDgator, glc
7. Bert.DS glc350e
8. Senatov
9. Frandumont glc300 (dirty sensors?)
10. Mickhoog
11. The_Judge e400 coupe
12. sackboydad, e450 cab
13. Streamliner, s560
14. Absent, s560 (loaner)
15. Malmokalle, e class
16. MBZ2019, a class
17. Legume, e400 wagon
18. Darren Boey, C350e
19. Utsenmo, C300
Old 02-02-2024, 03:25 PM
  #115  
MBWorld Fanatic!

iTrader: (1)
 
JettaRed's Avatar
 
Join Date: Nov 2016
Location: Maryland, United States
Posts: 4,563
Received 1,621 Likes on 1,208 Posts
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Any such malfunction should be reported to the NHTSA if in the US.
Old 02-22-2024, 05:10 PM
  #116  
Newbie
 
khoahoang91's Avatar
 
Join Date: Feb 2024
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
GLE 2021 350
Count me in, this happened to me as well. I described the details here: https://www.reddit.com/r/legaladvice...d_insurance_is


Here is the official investigation from Mercedes. Of course, they blame on anything else except malfunctioning. I don't even know how to interpret this report


https://1drv.ms/f/s!AsapmktNkxYkyOkt...ppVKA?e=AGpmmS
Old 02-22-2024, 06:49 PM
  #117  
Junior Member
 
luciferclefcapr's Avatar
 
Join Date: Jun 2022
Posts: 34
Received 7 Likes on 6 Posts
W206 C200
Wow, that looks like they made the reports so that it cannot be understood by common people like you and me.

The thing is they don’t give a sh*t about the real needs of the customer. The cars at Mercedes are being build by the accounting department, not the engineers. It reflects in every aspect and quality of the cars they put on the road for the last couple of years.
Old 06-10-2024, 10:57 PM
  #118  
Newbie
 
24GLE53 coupe's Avatar
 
Join Date: Jun 2024
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
GLE 53 coupe
SCARY Hard breaking for no reason

While using cruise control on my Mercedes, my car will hard break coming up on the toll check at Paluxy Drive exit. This is in a spot on Loop 49 in Tyler, Texas, where it should not be breaking. It literally shuts down from 70 until I give it gas. It is at a toll check that you drive under. I did notice on my screen a little credit card and coin emblem popped up in the place of the cruise control. The system thinks that I'm supposed to slow down and pay but it's just a drive-under tag scanner, nobody slows down. I have brought this to the attention of the Mercedes dealership. I don’t know if this is something Mercedes needs to correct or is this something TOLL 49 triggers on GPS and they need to correct. It’s scary. It breaks so hard I could have been rear ended!
Old 06-10-2024, 11:50 PM
  #119  
MBWorld Fanatic!

iTrader: (1)
 
JettaRed's Avatar
 
Join Date: Nov 2016
Location: Maryland, United States
Posts: 4,563
Received 1,621 Likes on 1,208 Posts
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
I would reach out to @BenzNinja to see if it is something that can be changed through coding.
The following users liked this post:
BenzNinja (06-11-2024)
Old 07-07-2024, 11:26 PM
  #120  
Newbie
 
sandieganv.2's Avatar
 
Join Date: Jan 2024
Posts: 3
Likes: 0
Received 0 Likes on 0 Posts
2017 E400 4MATIC Wagon
Originally Posted by bayman123
Here is another picture of the overpass. It happened about where the red circle is... maybe 1 car length away from being under the overpass.

My 2017 e400 wagon slammed on the brakes under an overpass on a busy local this evening. Absolutely nothing in front of us and I was driving completely normally, not changing lanes or passing or speeding or anything. Fortunately the car behind us was not too close.

Is the only way to disable the brake assist to go into the settings every time the car is started and disable it??

Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)
 


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

Quick Reply: Emergency Braking System Malfunctions



All times are GMT -4. The time now is 06:51 PM.