Mercedes Rear Brake Pad Replacement Guide

Learn how to change rear brake pads (and rotors) on Mercedes-Benz vehicles. This guide applies to the majority of Mercedes-Benz models from 2006 to 2015 including such C, S, E, CLK, CL, ML, GL, R class. A complete list of applicable models can be found in the table below.

What you will need

Parts

Tools

Instructions

  1. Park your Mercedes-Benz on a level surface. Jack up the car and remove the rear wheels. 
  2. Remove the metal clip using a flat head screwdriver. Push the bracket towards the front of the car to remove it. remove brake pad clip

     

  3. Locate the two bolts that secure the caliper on the bracket.mercedes rear brake pad capsThere are two small caps that need to be removed to see the bolts.mercedes rear brake caliper guide pinsOnce you remove the bolts you will notice the caliper bolts.mercedes brake caliper removalThese are either T40 or T45 bolts. On some models, a 10mm Allen wrench is required.
  4. Unplug the brake pad wear sensor. mercedes unplug wear brake wear sensor

     

  5. Remove the caliper from the bracket. mercedes rear brake caliper

     

  6. Push the piston into the brake caliper using a brake pad spreader.press mercedes piston inIf you don't have a brake spreader, use a flat head screwdriver to push the piston in as shown in the picture below. Removing the brake reservoir cap under the engine bay will make it easier to push the piston back into the caliper. If your Mercedes-Benz has electronic parking brakes, you will need to put the rear brakes in the service position. You do this using the buttons on your steering wheel. See the owners manual or look up our guide on "How to release Mercedes Electric Parking Brake  Youcanic".
  7. If you are changing the rotors, remove the two 18 mm bolts that secure the bracket to the rear wheel assembly. remove mercedes bracket 18mm bolt

     

  8. Remove the T30 screw from the rotor.mercedes rear brake pad diyRelease the rear parking brake. Once you remove the screw you can remove the rotor. If the rotor is rusted it may difficult to remove. If that is the case use, penetrating fluid and allow it to settle for at least 10 min. Use a rubber mallet to push the old rotor out. Make sure the vehicle is secure and will not roll. 
  9. Clean the rear hub and bracket from any debris or rust.clean rear rotorInstall the new Mercedes rear disk. Install rotor securing bolt. 
  10. Install the bracket and torque the 18mm bolts to specification.mercedes rear bracket

     

  11. Install the new Mercedes wear brake sensor on the new pads.install new mercedes brake wear sensorYou can reuse old wear sensor if the sensor wires are not exposed. If the brake pad wear sensor wires are exposed or you had a warning on your instrument cluster stating "Brake pad wear", you will need a new sensor. 
  12. Install new Mercedes rear brake pads.install new mercedes brake padsDO NOT APPLY GREASE OR ANTI-SQUEAL PASTE ON THE SURFACE BETWEEN THE PAD AND ROTOR.
    Rember to apply anti-squeal grease to the back of the brake pads and at the area where the brake pads slide on the bracket.mercedes grease on guide pinsApply grease to the guide pins.placing new brake pads on rear caliper bracketSlide the caliper on the bracket. 
  13. Tighten the guide pins to specification.torque caliper mercedesTypical torque range is between 30 and 55 Nm and varies between models. Call your dealer to get the recommended torque specifications for your Mercedes-Benz.
  14. Connect the brake pad wear sensor. Install the tire and torque the lug nuts. 
  15. If you disconnected SBC pump, reconnect it at this time. Start your car and press the brake pedal a few times until the pedal becomes hard to press.
  16. Check the brake fluid and take your Mercedes-Benz for a test drive.

Notes 

  • If your Mercedes-Benz has SBC brake system (common on early E-Class W211 and CLS models) it should be disabled before you work on the brake system.
    • Recommended methodDeactivate SBC brake system using Star Diagnosis Mercedes-Benz if your car has SBC brakes.
    • disable mercedes sbc pump to change brake padsAlternative method: You can disconnect the SBC brakes by unplugging the wire harness to the ABS pump. Brakes defective warning will show up on the instrument cluster, but it will turn off once the ABS pump is connected. By disconnecting your SBC pump using this method a fault code will be stored in the ABS or SBC control unit but will be reset once the ABS pump is reconnected.
    • Keeping SBC Active: If you decide to not disconnect the SBC pump, avoid opening any car door or lock/unlocking the car because the brakes will automatically apply. Be extremely careful when working on the brakes. If SBC pump is activated when the caliper is removed, it will press the piston and brake pads possibly causing injuries. 

Mercedes Rear Brake Pad Part Numbers

Torque Specifications

  • Brake Caliper Bolts - 25Nm
  • Caliper Bracket - 115 Nm

Applications

This guide applies to the following vehicles. 

  • 2005-2011 Mercedes-Benz G55 AMG
  • 2007-2009 Mercedes-Benz GL320
  • 2010-2012 Mercedes-Benz GL350
  • 2007-2012 Mercedes-Benz GL450
  • 2008-2012 Mercedes-Benz GL550
  • 2007-2009 Mercedes-Benz ML320
  • 2006-2011 Mercedes-Benz ML350
  • 2006-2007 Mercedes-Benz ML500
  • 2008-2011 Mercedes-Benz ML550
  • 2007-2009 Mercedes-Benz R320
  • 2006-2012 Mercedes-Benz R350
  • 2006-2007 Mercedes-Benz R500 
  • 2008 - 2014    Mercedes    CL63 AMG
  • 2008 - 2014    Mercedes    CL65 AMG
  • 2007 - 2011    Mercedes    ML63 AMG
  • 2007    Mercedes    R63 AMG
  • 2008 - 2013    Mercedes    S63 AMG
  • 2007 - 2013    Mercedes    S65 AMG

The typical cost to change Mercedes-Benz rear brake pads yourself averages $100. The average cost to change the brake pads at an auto mechanic or dealer range between $250 and $500. If you plan to replace the rotors the cost would be two to three times more than just changing the brake pads. Old rotors can be turned and reused if they have enough thickness.

Comments

Jennifer C., 2018-04-11

I got a quote for replacing rear brake pads and rotors for $895 which I think is rediculous. I better learn how to do this myslef or find a new boyfriend that has DIY skills. ;)

Jim Miller, 2018-04-12

I changed my MB E-430 brakes. It was very similar to my older Chevrolet Pickup. Should be a $100 or so job because its so easy.

Kyle, 2019-11-05

Let me start by saying that this is the best guide I could find for this project. None of the other guides or videos I could find were as good. That said, this guide, as well as the others I've found, fail to mention one big step that I encountered. First, I have a 2015 GL450 and can't speak to the applicability of this issue with other years or models. I followed this guide to a T up until the point where you need to compress the caliper piston. I've worked on brakes before but couldn't get the piston to compress at all. C clamps didn't work, brake spreader didn't work, screw driver didn't work, etc. I tried all of the above with the cap off the brake reservoir (as recommended in this guide), loosened the brake bleeder, etc. Nothing worked. After a few hours, I gave up and decided that there must be an easier way. After some serious googling I found out that some Mercedes (as well as other brands) use electronic parking brakes and require an extra step to compress the caliper. For my vehicle, I had to get in the vehicle, turn the key to the on position, wait for the odometer to appear on the instrument cluster, hold down the call button (looks like a little phone being picked up on the right side of the steering wheel on my vehicle), and the "OK" button simultaneously. After about 5 seconds a menu should show up, one of the options says "pad replacement" or something similar. When you select this option it asks you to confirm and then it compresses the pistons automatically. No C clamps, brake spreader, pry bar, etc are necessary. However, it wouldn't let me complete these steps with the brakes disconnected. I tried to plug the sensor back in, re-mount the caliper, etc. It wouldn't depress the piston until I had completely reinstalled everything and dropped the vehicle to the ground. Then I essentially started over but knew how to compress the caliper this time.

Sorry for the long comment but if it can save someone the time and money I spent figuring it out, then it was worth it.

By YOUCANIC on Nov 11, 2019

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