M-Class (W166) Produced 2012-2015

2015 ML350 How to retract parking brake for rear brake job

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Old Sep 5, 2019 | 06:24 PM
  #1  
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2015 ML350
2015 ML350 How to retract parking brake for rear brake job

I have an ML350 I am wanting to replace the rear pads and rotors and it’s showing I have to retract the parking brake electronically before I can remove the calipers and brakes.

Can anyone suggest how to do this? The videos I have seen on You tube but nothing for the 2015 model that would work.

any help would be appreciated
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Old Sep 5, 2019 | 08:28 PM
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Do you know how to access the "pad replacement" menu? On a 2017 W166 GLE350, the steps are:

1. enter the vehicle, close the door
2. press the start button once
3. ensure odometer appears in the multifunction display
4. press and hold the 2 phone icon (call accept and call end) buttons on the right button pad of the steering wheel, followed immediately by
5. pressing and holding the OK button on the left of the steering wheel, until the vehicle data menu appears
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Old Sep 5, 2019 | 09:22 PM
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That’s exactly what I needed. Thank you
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Old Sep 6, 2019 | 10:26 AM
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Here is the vid works for my 2014 ML


At around 55 sec mark is the procedure how to get there.
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Old Sep 6, 2019 | 10:33 AM
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Pwatts, here are my notes and links form when i did it earlier this year....... hope this helps.. 2012 ml63



ok, Did the brakes this weekend.... easy peasy with basic tools... torx, half inch sockets and breaker bar, torque wrench, found the chart here for specs on everything, that was nice... did some dance with steering wheel buttons to get the parking brake to release. otherwise typical pad/rotor swap....

Front/Rear Pads and Rear rotors, all in about $750 in parts, all OEM parts... took under 3 hrs being very careful not to break anything and making sure it was all torqued etc... found it all on amazon and the best price too...


good references

Torque Specs

https://mbworld.org/forums/gl-class-...l#&gid=1&pid=2

step by step

https://mbworld.org/forums/gl63-amg/...placement.html

how to get the rear parking brake to release..

https://mbworld.org/forums/m-class-w...#ixzz3JSpXdsvK


Remember to pull the cap off the brake fluid reservoir, passenger side front under the hood...

all 4 caliper's pistons are to be pushed back after each wheel is done, even though the rear ones look like they screw in, they dont. I tried

After each pad swap, go in and pump the brakes to seat the pads and lower the fluid in your reservoir, if ya do that after each wheel it won't overflow

had issues getting the rotors off the back... no anti-seize used so they where stuck... already had it on jack stands, hit the lug holes and around the axle with wd40 and used another jack to lift the rotor from underneath about an inch to put some pressure on it, then a couple of taps with a mallet and it came un stuck...

just remember as soon as you start tapping that rotor your at risk of warping so your committed to get it off at that point

after it was all back together, did a half dozen or so slow NEAR stops.... then another half dozen of ever increasing speed NEAR stops... and good to go

saved myself $2,250 and got to do some mechanical work which is always good on occasion...
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Old Sep 6, 2019 | 10:40 AM
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I would also add that the rear pads have an inner pad and outer pad. Meaning the pads are not identical. If you reverse install them you will get burning smell as you drive. The inner pads are slightly taller to accommodate the pad wear sensor.
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Old Oct 28, 2019 | 06:59 PM
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This should be DIY stickied. Great thread!
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Old Dec 23, 2019 | 10:28 PM
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That didn't work on my 2015 ML350.

Originally Posted by chassis
Do you know how to access the "pad replacement" menu? On a 2017 W166 GLE350, the steps are:

1. enter the vehicle, close the door
2. press the start button once
3. ensure odometer appears in the multifunction display
4. press and hold the 2 phone icon (call accept and call end) buttons on the right button pad of the steering wheel, followed immediately by
5. pressing and holding the "OK" button on the left side of the steering wheel, until the vehicle data menu appears
But here's what did work:
1. I removed the Start button cover, got in the car, closed the door, and inserted the electronic key into the start button hole.
2. Turned the key ONE CLICK to ACC. The odometer showed up.
3. Quickly, held down the "Phone Answer" button on the right side of the steering wheel Then, within a half second, also held down the "OK" button on the other side of the wheel. Must do it quickly
4. Held both buttons pressed for 5 or 6 seconds and the desired menu appeared.
5. Highlighted the parking brake legend and clicked OK. Then, I could hear the parking brake release.



Last edited by DFWKen; Dec 24, 2019 at 07:45 PM.
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Old May 16, 2020 | 06:00 PM
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ML 350 Bluetec, Toyota, Chevy
Hello guys,
I need advice on how to fix front brakes on my 2014 ML 350 BT. Rotors look good. Do I need to new rotors too? Any help would be appreciated.

Last edited by 1aJose; May 16, 2020 at 06:04 PM.
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Old May 16, 2020 | 06:17 PM
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Etienne Lau's Avatar
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What do you mean by fix? What's wrong with front brakes. You ask about replacing rotors, can't answer that without details, pictures, etc.....
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Old May 17, 2020 | 09:56 AM
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Originally Posted by 1aJose
Hello guys,
I need advice on how to fix front brakes on my 2014 ML 350 BT. Rotors look good. Do I need to new rotors too? Any help would be appreciated.
Hello, welcome. Why do you need to fix the brakes? Is there a noise? Is there a smell? Is there vibration? How many miles do you have on these front brakes?
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Old May 18, 2020 | 01:45 PM
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No noise, no smell, no vibration. I dunno how many miles on these brakes but car has 88,xxx kilometres.
Dealer told me front brakes are at 3mm, warning light will come up soon and it MUST be changed together with the rotors because the rotors are concave... hmm.. is this all true? What if I just change pads??

Last edited by 1aJose; May 18, 2020 at 01:49 PM.
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Old May 18, 2020 | 01:56 PM
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ML 350 Bluetec, Toyota, Chevy
Fix=repair
Dealer told me front brakes (pads) are at 3 mm, warning light will come up soon and it MUST be changed together with the rotors because the rotors are concave... hmm.. is this all true? What if I just change pads?? I've done brake jobs before on other vehicles but never on MB.
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Old May 18, 2020 | 02:58 PM
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Etienne Lau's Avatar
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Ml350 bluetec
@1aJose There are several reasons to change rotor with pads: rotors too thin, heavy grooving on rotors, rotors causing pulsing feeling during breaking. Not sure what the dealer means by "concave", could be some truth meaning the outer edges of the rotor are thicker than the inner portion of the rotor, this is a sign that the rotors are getting a little on the thin side. Pictures of the rotors will help us here. However it is your call if you want to have the rotors changed.

If the rotors are heavily grooved, then the new pads may not work well until they also develop grooves to match.
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Old May 18, 2020 | 03:04 PM
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thank you Etienne
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Old Oct 20, 2020 | 10:14 PM
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ML 350
Maint. Menu access

Originally Posted by DFWKen
But here's what did work:
1. I removed the Start button cover, got in the car, closed the door, and inserted the electronic key into the start button hole.
2. Turned the key ONE CLICK to ACC. The odometer showed up.
3. Quickly, held down the "Phone Answer" button on the right side of the steering wheel Then, within a half second, also held down the "OK" button on the other side of the wheel. Must do it quickly
4. Held both buttons pressed for 5 or 6 seconds and the desired menu appeared.
5. Highlighted the parking brake legend and clicked OK. Then, I could hear the parking brake release.
in one video I saw the tech put the emergency brake back in service after replacing the breaks and rotors. Did you do this.
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Old Oct 20, 2020 | 10:35 PM
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DFWKen's Avatar
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2015 ML350
Originally Posted by Richard Juarez
in one video I saw the tech put the emergency brake back in service after replacing the breaks and rotors. Did you do this.
it was a long time ago, but I believe I did.
the parking brake was working for months thereafter and we sold the car.
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