Has YOUR ML Been Trouble Free? Love It? TELL US!




First problem was the passenger side window wouldn't close properly. It often would slow down while it was going up, start shuddering/shaking, then bounce back down to the fully open position. Then, flicking the switch to close it again most of the time it closed properly the second time around without any issues. Dealer lubricated the tracks and all is fine for now. (This also occured on both our 2012 C-Class, and a friend's 2013 C-Class ... weird!)
Then I had the rattling engine noise issue which MBAuP initially told me was normal, mind you after having my car nearly 2 weeks and checking everything (or so they said). I then found the thread https://mbworld.org/forums/new-m-cla...ease-help.html, printed out mb techman's service bulletin, and showed my dealer SuPER__S Youtube videos (all can be found in that thread) and they finally acknowledged there was an issue and they could fix it. After another week in at the dealer, and then initially telling me they had to pull the whole engine out, I got it back and it's been fine ever since. Fortunately they only had to pull the top part of the engine apart.
After that came the subwoofer rattling in the rear on certain music tracks that had high bass level. Another 5 days in their workshop and they pulled everything to bits and added "magic carpet" around all the speakers and that helped alot, but hasn't completely solved the issue. I have Harman/Kardon Logic 7 surround sound, and never experienced this with my previous ML, no matter how loud I turned up the volume.
Had some issues with the transmission being a little clunky when the car was new, but that seems to have sorted itself now. Dealer said it was just getting used to my driving style.
I then noticed my passenger side aircon vent thumbwheel wasn't illuminated like the rest of the dash vents were. They replaced that.
Shortly afterwards I noticed the right side rear aircon vent wasn't moving the little flaps inside to change the direction of airflow when you moved the little piece outside the vent from side to side. They replaced the whole vent.
Now just the last couple of days we've noticed a strange stretching sound coming from the front wheels when you have then turned on full lock and are driving at slow speeds (exiting our driveway that is sort of L-shaped). Not sure what this is, but it sounds awful and as though something is going to break, so off to the dealer I will go again.
All of these repairs have been covered under warranty without any issues, and they've always provided loan cars for free, but the issue for me is the dealer is up to an hour away in traffic so it's the loss of time and the hassle of going backwards and forwards all the time that annoys me.
Absolutely love my car, it's driving and performing so well now that it's over a year old and the engine has run in nicely. However, I feel the quality on this car compared with our current C250, my previous ML500 and E500 sedan just isn't there anymore.
A little disappointed I must say, but all in all still a very happy ML owner, and would certainly buy another one, but that raises another issue for me ... they're dropping the 500/550 engine soon and I always want V8s so not sure what I'll buy next. I will look at the new X5, but I have a feeling I'll probably end up in a new Jeep Grand Cherokee, and save half my money too! Don't want a ML63, they're way too noisy and expensive for what I need.
Happy motoring folks,
Last edited by Benz Werd; May 19, 2014 at 01:38 AM.
First problem was the passenger side window wouldn't close properly. It often would slow down while it was going up, start shuddering/shaking, then bounce back down to the fully open position. Then, flicking the switch to close it again most of the time it closed properly the second time around without any issues. Dealer lubricated the tracks and all is fine for now. (This also occured on both our 2012 C-Class, and a friend's 2013 C-Class ... weird!)
Then I had the rattling engine noise issue which MBAuP initially told me was normal, mind you after having my car nearly 2 weeks and checking everything (or so they said). I then found the thread https://mbworld.org/forums/new-m-cla...ease-help.html, printed out mb techman's service bulletin, and showed my dealer SuPER__S Youtube videos (all can be found in that thread) and they finally acknowledged there was an issue and they could fix it. After another week in at the dealer, and then initially telling me they had to pull the whole engine out, I got it back and it's been fine ever since. Fortunately they only had to pull the top part of the engine apart.
After that came the subwoofer rattling in the rear on certain music tracks that had high bass level. Another 5 days in their workshop and they pulled everything to bits and added "magic carpet" around all the speakers and that helped alot, but hasn't completely solved the issue. I have Harman/Kardon Logic 7 surround sound, and never experienced this with my previous ML, no matter how loud I turned up the volume.
Had some issues with the transmission being a little clunky when the car was new, but that seems to have sorted itself now. Dealer said it was just getting used to my driving style.
I then noticed my passenger side aircon vent thumbwheel wasn't illuminated like the rest of the dash vents were. They replaced that.
Shortly afterwards I noticed the right side rear aircon vent wasn't moving the little flaps inside to change the direction of airflow when you moved the little piece outside the vent from side to side. They replaced the whole vent.
Now just the last couple of days we've noticed a strange stretching sound coming from the front wheels when you have then turned on full lock and are driving at slow speeds (exiting our driveway that is sort of L-shaped). Not sure what this is, but it sounds awful and as though something is going to break, so off to the dealer I will go again.
All of these repairs have been covered under warranty without any issues, and they've always provided loan cars for free, but the issue for me is the dealer is up to an hour away in traffic so it's the loss of time and the hassle of going backwards and forwards all the time that annoys me.
Absolutely love my car, it's driving and performing so well now that it's over a year old and the engine has run in nicely. However, I feel the quality on this car compared with our current C250, my previous ML500 and E500 sedan just isn't there anymore.
A little disappointed I must say, but all in all still a very happy ML owner, and would certainly buy another one, but that raises another issue for me ... they're dropping the 500/550 engine soon and I always want V8s so not sure what I'll buy next. I will look at the new X5, but I have a feeling I'll probably end up in a new Jeep Grand Cherokee, and save half my money too! Don't want a ML63, they're way too noisy and expensive for what I need.
Happy motoring folks,

This is just speculation, but I have Airmatic and 20-inch wheels, so perhaps the noise is the tires rubbing on the wheel wheel liners when they are on full lock and the Airmatic is in the sport mode, which lowers the chassis. The Airmatic is always adjusting itself--I sometimes see the front end rise a bit after coming to a stop--so perhaps it sometimes is in a down phase when the car is shut off.
This is just speculation, but I have Airmatic and 20-inch wheels, so perhaps the noise is the tires rubbing on the wheel wheel liners when they are on full lock and the Airmatic is in the sport mode, which lowers the chassis. The Airmatic is always adjusting itself--I sometimes see the front end rise a bit after coming to a stop--so perhaps it sometimes is in a down phase when the car is shut off.
The Best of Mercedes & AMG




1. Check Engine Light - Software Update.
2. Check Engine Light - Replaced Temperature Sensor.
I though I had an issue with the Keyless Go and the drivers door but was told when you approach the vehicle when it is locked and the key is in pocket, you grab the door handle and it opens. Yes, but when you exit the vehicle and grab the handle it will not close, you have to tap the indent on the handle, problem solved. Never had a problem since.
My gas mileage is averaging around 10L/100, no complaints. I do miss the ridiculous speed of my 11 ML550, but do find the torque on this vehicle to be quite sufficient.
Of all the M-Classes I have owned, the fit and finish and quality materials of this 14 model is impeccable.
1. Check Engine Light - Software Update.
2. Check Engine Light - Replaced Temperature Sensor.
I though I had an issue with the Keyless Go and the drivers door but was told when you approach the vehicle when it is locked and the key is in pocket, you grab the door handle and it opens. Yes, but when you exit the vehicle and grab the handle it will not close, you have to tap the indent on the handle, problem solved. Never had a problem since.
My gas mileage is averaging around 10L/100, no complaints. I do miss the ridiculous speed of my 11 ML550, but do find the torque on this vehicle to be quite sufficient.
Of all the M-Classes I have owned, the fit and finish and quality materials of this 14 model is impeccable.
One minor annoyance for me that no one else seems to have a problem with is the behavior of the Distronic (adaptive cruise control). Often when passing a truck, on the left or passing a car on an exit ramp as I am continuing by on the highway, the Distronic will brake. I have to override it with gas for fear a car behind me will run into me. The dealer can't replicate the problem.
Also collision avoidance assist ( I think that's the alert that sounds) almost always activates (tones..beep beep) as I pass exit ramp signs..
Still, I suppose it's better to be overly sensitive than less so. It doubtless will take another generation of software to fine-tune the system.




One minor annoyance for me that no one else seems to have a problem with is the behavior of the Distronic (adaptive cruise control). Often when passing a truck, on the left or passing a car on an exit ramp as I am continuing by on the highway, the Distronic will brake. I have to override it with gas for fear a car behind me will run into me. The dealer can't replicate the problem.
I've turned OFF the Lane keeping feature all together. Dangerous in two lane hwy construction areas. Pulls you towards the car/eighteen wheeler next to you. The Attention Assist I turn off but have to keep turning it off because it won't stay OFF due to it coming back on each time you restart the car. It's an annoying 'feature'.
The chrome around the vents shines/reflects into the side mirrors and is annoying. Probably reflects into the side window area where you view the outside mirror is a better way to put it. Annoying.
Drive train is without any problems. Fourteen K miles since mid Feb. Service A was sort of messed up. They forgot to fill the DEF tank up and I had to go back to get it filled.
Volume switch on the steering wheel is 'not right' in that the UP volume has no 'feel' to it. As if the return spring isn't there at all. It does its job though in making the volume go up. Due to be fixed in a couple of weeks when they get the part from Germany?
NHTSA # 10052151. MB dealer could not find problem so I took to a local independent shop recommended to me through our classic car club. They found it right away and told me about the TSB. Maybe MB should put these guys on as consultants.




I had a mist of oil on the front of the engine around 50K. Fixed at the dealer. They said it was a turbo inlet duct seal failure. Cost out of pocket 500 bucks. No leakage since.
Tailgate will unlock/lock, but will not raise up nor go down by itself using the key or using the handle on the tailgate. It WILL open and shut by hand. This happened a couple weeks ago when I went out to the car one morning an found the battery completley dead. Somehow I think the two problems are tied together. I've no idea why the batt was dead. No batt problems prior to this event nor after. Odd
Around the first of the year I'll take it to the dealer to have the problem diagnosed. Might be costly if the rear SAM (signal aquisition monitor) is kaput........or it might just be some reprogramming to be done for little. Fuses look good in the rear fuse box.
Distronic sucks big time. As mentioned a couple of posts above, it hesitates the car at speed when passing a vehicle in the other lane. Wish I could turn it off and just have regular speed control without distronic/adaptive speed control. I've SL550 with the same problem and it's a pain in the bottom when passing cars in the other lane at speed. In fact it's a feature that's not well engineered imho. I've Lane keeping turned off in both cars and 'drivers alert' or whatever it's true name is turned off in both cars. Fortunatley in the SL, once you turn it off it STAYS off vs the ML where you have to turn it off duing each drive to keep it off.
Oh, i was looking at reciepts for the pre-paid maint earlier today and noticed they repaced a line before the fuel filter around 40K because it was leaking. That's interesting. I missed noticeing that on the reciept back when that service was done. No charge was on the reciept for that.
Last edited by HAILERS2; Dec 16, 2016 at 09:35 AM.
All of the problems were eventually fixed and my wife has been quite happy with it.
Until she drove a Tesla Model X. No comparison. She'll have her X in April 2018. She's quite jealous of a friend who just got one.







