ESP activated on acceleration past 3000 RPM and Shudders
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
ESP activated on acceleration past 3000 RPM and Shudders
I have a strange issue that I believe may be wheel speed sensor related. My 2011 GL450 shudders on acceleration and triggers the traction control warning light. The shudder is so hard that the ESP kills the power. It's almost as if I can't drive past 4000rpm.
However, when cruising on the freeway and going WOT, there is no issue. Seems to only occur in the first 3 gears.
Thoughts?
However, when cruising on the freeway and going WOT, there is no issue. Seems to only occur in the first 3 gears.
Thoughts?
Member
Joined: Dec 2015
Posts: 163
Likes: 28
From: USA
2021 GLS580
Put the car in dyno mode with the secret menu in the instrument cluster. If the car shifts normally and everything it’s more than likely gonna be a wheel speed sensor. It almost got me killed in 80mph San Antonio traffic once...
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
Took the GL on an empty road last night and did a WOT run. Car doesn't want to accelerate normally. There is significant bucking or a surging in first and second gear with the ESP light flickering throughout entire rpm range. I did feel and HEAR the driver side wheel spin though too before the traction control kicked in. Didn't think spinning wheels on a 4 wheel drive suv was possible. Doesn't sound right...
Would a wheel speed sensor do that too?
Would a wheel speed sensor do that too?
Last edited by Uranium238; Feb 6, 2019 at 03:53 AM.
Member
Joined: Dec 2015
Posts: 163
Likes: 28
From: USA
2021 GLS580
Took the GL on an empty road last night and did a WOT run. Car doesn't want to accelerate normally. There is significant bucking or a surging in first and second gear with the ESP light flickering. I did feel the driver side wheel spin though too before the traction control kicked in. Didn't think spinning wheels on a 4 wheel drive suv was possible. Doesn't sound right...
Member
Joined: Dec 2015
Posts: 163
Likes: 28
From: USA
2021 GLS580
It can be turned off at anytime, but if the wheel speed sensor is the culprit i would leave dyno mode on and never turn it off until you get the sensor fixed!
Trending Topics
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
Shuddering is the power cutting out because the brakes are triggering the ESP. it feels like you lost half the cylinders when accelerating.
Wasn't able to troubleshoot this morning. Will do it tonight. I already ordered the sensors for the front since there is no record of them ever being changed.
Wasn't able to troubleshoot this morning. Will do it tonight. I already ordered the sensors for the front since there is no record of them ever being changed.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: May 2015
Posts: 1,932
Likes: 291
From: Allentown, PA
'08 GL 320 CDI
Could you be confusing the ABS kicking in (brake pedal pulsating... "shuddering") with the computer pulling power? Just pulling power doesn't cause shuddering - power can be pulled, but throttle response should still be smooth... just not as much power on demand. Which came first... the chicken or the egg? 
So the CEL is on, but you just haven't had time to pull codes? Or is it not even lit up? Usually a WSS will trip that. However, there could be dirt on the sensor or the reluctor wheel (could be using the wrong term, there) tricking the computer into seeing a locked up wheel.
So the CEL is on, but you just haven't had time to pull codes? Or is it not even lit up? Usually a WSS will trip that. However, there could be dirt on the sensor or the reluctor wheel (could be using the wrong term, there) tricking the computer into seeing a locked up wheel.
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
The CEL is not on. As I mentioned before, only the ESP is triggered (flashing exclamation light) upon acceleration.
We have had some heavy rain here and this problem emerged right in the middle of the heavy storms.
We have had some heavy rain here and this problem emerged right in the middle of the heavy storms.
Member
Joined: Dec 2015
Posts: 163
Likes: 28
From: USA
2021 GLS580
This has to be a speed sensor issue because this happened to me after a car wash sent pressurized water to my wheels.
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
Narrowed it down to the driver side front. You don't even need to hook it up to a DAS to isolate. Just turn the steering wheel right and apply gas. You instantly hear a grind and the ESP flashes. That would be the brakes locking down that wheel. Try making a left turn and it won't do it.
Going into Dyno mode until my sensors come in.
Going into Dyno mode until my sensors come in.
MBWorld Fanatic!
Joined: May 2015
Posts: 1,932
Likes: 291
From: Allentown, PA
'08 GL 320 CDI
I'm surprised your not getting a CEL. It makes me wonder if something is actually "wrong" with the sensor, or if there is simply some type of dirt/grime caught in there causing it to "sense" incorrectly.
Driver's side... or... is it the passenger side since when you turn to the right, it unloads the weight on the starboard side of the vehicle allowing the wheel to spin easier? I dunno - just thinking outloud here. I'll be curious to see what happens once you're in Dyno mode - first time I heard of that, myself. Might have to try that just for the fun of it!
Driver's side... or... is it the passenger side since when you turn to the right, it unloads the weight on the starboard side of the vehicle allowing the wheel to spin easier? I dunno - just thinking outloud here. I'll be curious to see what happens once you're in Dyno mode - first time I heard of that, myself. Might have to try that just for the fun of it!
Last edited by DennisG01; Feb 7, 2019 at 10:11 AM.
MBWorld Fanatic!
Joined: Aug 2003
Posts: 8,882
Likes: 1,212
From: In my garage
E55, GLS450, GL63, GLE350
The ABS sensors on the passenger side lasted around 220k miles and the drivers side around 240k miles. You can purchase on Amazon for $35 and it includes all 4. Go ahead and change them all since they typically go out around the same time.
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
I went big and bought Genuine front sensors at 116 a pop. Heard a story from an old tech friend why one shouldn't go cheap on them as they may not last that long. Aftermarket ones these days are made in China
For those reading, part number is 1645400917. There is no specific front right or left.
EDIT - Part number superceded to 1649058200 and may be a better sensor that lasts longer!
For those reading, part number is 1645400917. There is no specific front right or left.
EDIT - Part number superceded to 1649058200 and may be a better sensor that lasts longer!
Last edited by Uranium238; Feb 8, 2019 at 04:45 PM.
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
DennisG01 you're right. It is the right front. The noise resonated toward the left side from the right. The fact the right front wheel is unloading during a turn and triggering a false traction light is very plausible.
I don't see any write ups on the replacement so I will do everyone a favor who has the same issue in the future.
I don't see any write ups on the replacement so I will do everyone a favor who has the same issue in the future.
MBWorld Fanatic!
Joined: May 2015
Posts: 1,932
Likes: 291
From: Allentown, PA
'08 GL 320 CDI
I'm still surprised at not seeing any codes.
Last edited by DennisG01; Feb 10, 2019 at 05:14 PM.
Member
Joined: Jul 2016
Posts: 112
Likes: 24
From: Orlando, Florida
2009 E550, 2011 GL550, 2013 GL550
Wheel speed sensor is fairly easy to change. Just remove wheel, remove the fender liner, disconnect the plugs, and follow the line to where the speed sensor is located behind the rotor area. My symptoms for wheel speed sensor were a check engine light, along with traction control, ESP lights on, along with limp mode. Changed all 4 and went with genuine as aftermarket brand speed sensors were giving the same fault, even with brand name or FCPEuro aftermarket sensors.
However, after changing all 4 wheel speed sensors, car would randomly go into limp mode but without any lights. Searched it up and apparently there is another "Speed sensor" in the conductor plate which appears to be a common failure with these 722.9 transmissions. However, since there were no check engine lights, dealer refused to change conductor plate/valve body and Indys can't change them since its a security part. We ended up changing the transmission fluid at an Indy and seems to have fixed issue for now. Hope this helps.
However, after changing all 4 wheel speed sensors, car would randomly go into limp mode but without any lights. Searched it up and apparently there is another "Speed sensor" in the conductor plate which appears to be a common failure with these 722.9 transmissions. However, since there were no check engine lights, dealer refused to change conductor plate/valve body and Indys can't change them since its a security part. We ended up changing the transmission fluid at an Indy and seems to have fixed issue for now. Hope this helps.
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
Right front wheel spins in Dyno mode. Left does too slightly when applying more throttle then normal. Streets are wet
Assuming this is normal??? Sensors are off in Dyno mode and you can tell esp is not trying to stop it. The truck accelerates fine with no problems.
Assuming this is normal??? Sensors are off in Dyno mode and you can tell esp is not trying to stop it. The truck accelerates fine with no problems.
Last edited by Uranium238; Feb 9, 2019 at 03:10 PM.
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
WTH?! Is the abs sensor also include brake pad??? This doesn't look like the part number I bought. Unless that big black piece is a cover for the brake pad and abs sensor. Thoughts???
Last edited by Uranium238; Feb 9, 2019 at 05:39 PM.
Member
Joined: Dec 2015
Posts: 163
Likes: 28
From: USA
2021 GLS580
From what I’ve heard, there’s a brake sensor for the brake pad and a separate ABS sensor.
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
It is. Called it quits because it's pouring rain for now. Trying to figure out how to pop off that cover.
EDIT: it is not a cover but rather both the wheel speed sensor and brake pad wear sensor sitting flush side by side.
EDIT: it is not a cover but rather both the wheel speed sensor and brake pad wear sensor sitting flush side by side.
Last edited by Uranium238; Feb 9, 2019 at 08:59 PM.
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
For those of you who don't know and will be doing this, there is a clip inside the harness holding both the WSS and brake pad sensor. It can be removed with a flat screwdriver pressing on the right side of the harness where there is a small opening to expose it.
YOU MUST REMOVE THE WHEEL LINER TO REPLACE. IT IS VERY EASY TO DO AND TO REINSTALL
Thread Starter
Member
Joined: Feb 2008
Posts: 224
Likes: 24
1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
Damnit! After replacing the fronts the ESP light is still triggered under WOT acceleration past 4000. Now what???
Is it the rears triggering it?
Is it the rears triggering it?
