Brakes

From W220 S-Class Encyclopedia
Revision as of 14:37, 27 June 2021 by Pokseva (talk | contribs) (→‎Front brakes: brake rotor and pads)
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Front brakes

Front brake-related parts in EPC

Dust shield

It is common for the dust shield (also known as protective plate) to rust in the bolt holes resulting in the dust shield touching disk rotor.

Dust shield front left (A2204200444)

Part numbers:

  • OE left: A2204200444 (124 EUR)
  • OE right: A2204200544 (124 EUR)

Brake disk rotor

  • OE A2204210912 (135 EUR)
  • TRW DF4149S (56 EUR)

Brake pads

Brake pads are sold in pairs (for both sides).

  • OE A0044209020 (112 EUR)
  • TRW GDB1543DTE (50 EUR)

Front disc rotor replacement

This video shows how to replace the front rotors.

W220 Front Brake Rotors Replacement (By Masood)

Rear brakes

Rear brake-related parts in EPC

Rear brake pads replacement

This video shows how to replace front and rear brake pads. The video shows part numbers for the Brake Pads (Front and Rear) and Pad Wear Sensor. Torque values are also shown.

W220 Brake Pads Replacement (By Masood)

Rear driver brake caliper replacement

This video shows how to replace the rear driver caliper in a left steered car. The procedure is very similar for the other wheels.

W220 Rear Brake Caliper Replacement (By Masood)

Brake fluid replacement

Regular Flush Every Two Years

Brake fluid DOT4 is hydroscopic (absorbs water) and needs to be exchanged every two years under the maintenance schedule. A local dealer quoted $95 for this task. Plan for between 1-1.5 hrs if you DIY.

Warnings

  • It is critically important to use the DOT rating specified in the owner’s manual.
  • Brake fluid is hazardous. Wear latex gloves, safety glasses, and protect the paint of your car.

DIY Brake Fluid Flush

  • Suck out old fluid in reservoir using a miti-vac or a turkey baster.
  • Top off with NEW UNOPENED DOT-4 PLUS fluid ONLY!
  • Connect Power Bleeder which has been filled with NEW UNOPENED DOT-4 PLUS fluid!
  • Pressurize the brake system with the Power Bleeder (138KPa (20 psi) via the integrated pump).
  • Bleed all four callipers, LR, RR, LF and then RF.
  • Inspect for leaks.
  • Depressurize the system, CAUTION: DO NOT SPRAY THE FLUID, otherwise you will be getting a new paint job.
  • Do a manual check of brake pressure
  • Make a final check of the level of fluid in the brake reservoir.
  • Record Brake Flush in Maintenance Records.
  • Dispose of old brake fluid responsibly .

TIP: If possible alternate brake fluid colour from one flush to the next. The difference in colour gives good confidence that everything is flushed out.

Quantity of Brake Fluid Required for a Thorough Flush It will use about 3L for a full and thorough flush.


The following video shows how to completely flush and replace the Brake Fluid using the Pressure Vacuum method.


Complete Video

W220 Brake Fluid Flush (By Masood)