Bobenis

My 2007 ML350 JUST started doing this 2 days ago.
Thankfully I was not on the highway!
It did however happen right in the middle of an intersection and the light had turned red, it was pretty scary.
Unreal MB would put so much importance on this Yaw unit that could cause the vehicle to suddenly stop without warning in mid-drive with no brake lights activating.
This could cause serious injury or death to the driver/passengers as well as any vehicle that hits you as a result.
Of course MB will claim ignorance and do nothing about it...they have lost all my respect.

we47b1me

​​​​​​can't come here and scream at windmills unless you can back up that it's MB's fault. Is your car properly maintained? Did you scan the car? Do you follow regular service intervals? Have you been driving with an idiot light on and chosen to ignore it? Are you the original owner, if not do you have all the service records? Etc etc etc. Your 13 year old car (which you're in the wrong forum for by the way), displays some bad behavior and you go straight to blaming the manufacturer without any other details.

Bobenis

You missed the point.
They have a Yaw Sensor, which is supposed to last the life of the car, that when fails can lock your car's brakes up without warning while driving.
THAT is a serious engineering oversight.
I have a very good scanner, no dash lights or issues, and all maintenance has been done routinely.
PS Windmills cause cancer and kill birds...duh.

we47b1me

please show me on any vehicle where a electrical part is supposed to last "the life of a car" -- if that's your mentality towards motor vehicles, you are seriously setting yourself up for failure.

And you didn't answer multiple other questions I posed. Good luck.

Bobenis

I have no obligation to "answer your questions" and even if I did you would just come up with others to defend your loyalty and ego so what would it matter?
PS MB claimed their "sealed for life transmissions" did not need fluid changes and were supposed to last the life of the vehicle...yeah right.

we47b1me

Loyalty and ego? Come on dude. You're the one thinking that since it's a Mercedes, the yaw sensor should last for life. More importantly, you don't have concrete proof its the yaw sensor. You say your truck didn't display codes after the incident which happened. Not possible. A fault would exist in one of several modules if you're using a prograde scanner.

As for the sealed for life 722.6 tranny's, Mercedes realized their error, and issued a TSB years and years ago.

You're boring me, you're on the wrong forum, and you've descended down to labeling.

Bye.

khomer2

Bobenis,
supposed to last the life of the car?
Where did they say that?
MB did make a similar statement about their "722.6XX sealed for life trannies" - then it changed with their bulletin.

we47b1me is correct, your venting in the wrong forum - this is the W163 forum.
2007 ML350 = w164 - completely different platform ------------> https://mbworld.org/forums/m-class-w164-72/

Bobenis

Nowhere did I state my ML did not display codes on my scanner after the braking incident.
I am on the MB forum and the issue is related across many models, not one model specifically.
I did a search and this thread came up pertaining the the same issue I just experienced hence I posted my recent similar occurrence, so what?
Regarding the tranny, a year ago...only 13 years late is all.
Do some reading on yaw rate sensors and their supposed life expectancy.
Later

we47b1me

Wrong.

Bobenis

Haha like a hawk he swoops in

we47b1me

when incorrect info is disseminated by those posting on the wrong forums, certainly. This is how people get confused.

Jhun

Hi
Mine also has this problem about 6 years. Problem occures rarely. 5 years ago esp yaw rate sensor was broken, I changed it 1 year ago. But problem did not solved. I dont think this problem is due to yaw rate sensor.

Fishbreath1

Yes. With my 2002 ML 320. Traveling at 70 mph on the interstate.
Any solutions out there?
Bill

khomer2

Read here

While there, for more info, also do a search for "w163 sudden braking" for more threads on this topic.

IgorE350

Hi, let me stick my 5 cents. Did you guys ever think that the wire harness that is right by the ABS pump is gets cut and wires get wet and touch would cause that? Or cause the sensor to go bad?
What sensor on the wheel lets the yaw sensor know that there is a problem?

Chris W. Rohlfs

Happened to a friend of mine about 3 times. The 1st time doing 60 with his wife and 3 daughters on the highway. Then a 2nd time by himself and today. Was in the shop a month until last week.

Martif

Hi ,we have a 2002 ml 270 cdi with 105000 miles properly maintained same thing just happened to my wife, driving at a steady 50 mph when brakes suddenly engaged bringing car to a very sudden halt. This also has happened to a friend who has a ml 320 2001. Mercedes should do a recall.

TorahTeacherJT

This happened to me yesterday... again. Both times I had been idling waiting for someone in the heat with the air conditioner turned on. When I started driving the brakes engaged. The vehicle stopped suddenly with the ABS shaking the pedal and vehicle. I could not drive over 5 mph and it'd happen again. The BAS/ESP light turned on and the warning ⚠️ only when the brake engaged.
I had not touched the brake after putting it in gear to drive.

I turned the engine off and back on and it drove without incident but the light was still on.

Is it possible that condensation built up somewhere?

The first time was an identical situation.

Martif

Hi , I have contacted Mercedes about this problem and I did get a reply but they do not appear to be interested. There are now some very dangerous cars out there because sensors are now failing due to age. Should be a recall even if these cars are now quite old. In order to continue driving my own ML I have removed relay 25 which will disable the abs pump so now the brakes will no longer self engage but should you decide to do this bear in mind there will be no abs braking. I did have the Yaw sensor replaced at a Mercedes specialists but they could not get the fault code to disappear. Good luck with your car.
Hopefully if enough people report this fault then Mercedes will have to act.

Krystar

Hi, this unfortunately happened to me the other day in my ‘02 ML500.
Thank God I was driving down a desolate road and nobody behind me, but my brakes automatically locked up on their own, even with my foot on the accelerator!
This is absolutely unacceptable and is the worst case scenario for a default function of a vehicle when a sensor goes bad.
Shame on you Mercedes!!
This absolutely needs to be addressed to the heads up there in the MB offices, and a recall is definitely a necessity!
This is a very serious issue and extremely DANGEROUS.. People are going to DIE!

Drewniany

Same things were happening to my 2000 ML 430. The shop I went to replaced the ABS module and the problem went away for about 6 months. After that I have experienced one more hard braking but again everything went to "normal" since. I was told by the shop owner that this might also be caused by ABS sensor going bad or bad wheel bearings. I take good care of mine old ML so lack of proper maintenance is not an issue here. No matter what it is, I drive my car with both hands on the steering wheel since.

Krystar

I posted a thread about this in Facebook and asked how many others have experienced this brakes locking issue, and it is not a good Outlook.
There are so many instances where people have had near collisions and rear-endings. Some people have been in collisions because of this. Too many instances for my liking. I'm n sure there are some instances that caused death we don't even know about.
I left a link you the NHTSA to post your experience and complaints about this dangerous brake locking issue.
If you have experienced this, please report it.

https://www.nhtsa.gov/report-a-safety-problem

Thank you for sharing!

Maj. Dundee

Please believe me, 99,9% of this problem is a faulty Yaw rate Sensor.

Krystar

Yes, aware of that. Why are there so many faulty YAW rate sensors? And why would they program a vehicle that would lock is brakes as a default function when the yaw rate sensor goes bad?
This is very poor planning!

Drewniany

Thank you Krystar for your input and for posting a link to the NHTSA. I just reported to them what is going on. Will keep you posted if I hear from them.