M-Class (W163) Produced 1998-2005: ML 230, ML 320, ML 350, ML 400 CDI, ML 430, ML 500, ML 270 CDI

Brakes engaging automatically - ESP fault?

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Old 12-13-2021, 11:12 AM
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2002 ML 320 & 2006 ML500
Originally Posted by 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!
Because they farm-out the making many components to other countries .
Old 12-14-2021, 03:04 AM
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2006 C 280
Diagnostic computer screenshot

Diagnostic's computer screenshot

I was told by the mechanic today, that this could be anything pertaining to ABS module(mine was allready replaced) yaw rate sensor, bad wire connection, bad wires, etc. In order to pinpoint the problem hours of diagnostics have to take place. I assume it might be cheaper replacing the yaw rate sensor. Can anyone translate this better?
Old 12-24-2021, 02:39 PM
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2010 ml350 4matic
Need a temp workaround

Originally Posted by 01ml320benzito
Mine did the same. It was the Yaw rate sensor!
I ordered a yaw sensor but it won’t be here for 10 days. I have to be able to drive it until then because I have to get the emissions taken care of to renew my sag before the 1st. Can I remove the fuses for the esp and just disable it and drive until the part gets here?
Old 12-25-2021, 07:36 AM
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Try this to see if the ESP is disabled.


Old 07-10-2022, 01:15 PM
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Mercedes 2001C240
It happens with no Drivers input.

Originally Posted by Mads;[url=tel:1928657
1928657[/url]]A friend of mine with an '02 ML350 was driving on the freeway at 60 mph when all of a sudden the brakes locked up without him touching the brake at all - the ABS was working, but even so the brake force was maximum. He managed to pull the vehicle over and turned off the engine and waited a few minutes. When turning the engine back on there was no warning lights and the brakes had disengaged and appeared to operate OK. He continued home driving in the inner lane and the same problem occured twice before he reached home. Over the past 2 weeks the problem has not resurfaced, but obviously he is worried that it can happen anytime again!

Has anyone had any similar experience?
I have. My experience is that one of the front wheels will do this. In my case it’s momentary.
I’m still looking for answers.
Old 11-05-2022, 05:48 PM
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I have been having the similar problem,tried asking a couple Mechanics still couldn’t find the problem one ended up saying it’s a gear box problem and that I need to change the gear box
Old 12-15-2022, 02:32 PM
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C300 4matic sport
Originally Posted by Mads
A friend of mine with an '02 ML350 was driving on the freeway at 60 mph when all of a sudden the brakes locked up without him touching the brake at all - the ABS was working, but even so the brake force was maximum. He managed to pull the vehicle over and turned off the engine and waited a few minutes. When turning the engine back on there was no warning lights and the brakes had disengaged and appeared to operate OK. He continued home driving in the inner lane and the same problem occured twice before he reached home. Over the past 2 weeks the problem has not resurfaced, but obviously he is worried that it can happen anytime again!

Has anyone had any similar experience?
That happened to me not long after I bought my used 2009 C300. I was on the highway going about 80 and the brakes engaged. Scarry. Its the ESP. I figured out how to disable it and havent had it happen again since. You go to the menu on the instrument cluster, push rt arrow once, scroll down to Dynamom. Test, select ok, enable it. Once you do that its on test mode and the esp is permanently disabled until you take it out of test mode. That will 100% fix the problem. Its still working for me.

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