Mercedes-Benz ML450 Brake Master Cylinder Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(8)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(8)

Brake Master Cylinder Replacement Service

How much does a Brake Master Cylinder Replacement cost?

On average, the cost for a Mercedes-Benz ML450 Brake Master Cylinder Replacement is $502 with $320 for parts and $182 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2010 Mercedes-Benz ML450V6-3.5L HybridService typeBrake Master Cylinder ReplacementEstimate$840.62Shop/Dealer Price$1008.59 - $1494.07
2011 Mercedes-Benz ML450V6-3.5L HybridService typeBrake Master Cylinder ReplacementEstimate$828.91Shop/Dealer Price$992.86 - $1475.33
Show example Mercedes-Benz ML450 Brake Master Cylinder Replacement prices

What is the brake master cylinder and how does it work?

The brake master cylinder has a piston that pressurizes fluid in the brake lines to each wheel cylinder as you apply force to the brake pedal. That pressure moves the pistons that are in the wheel cylinders. As the pistons in those wheel cylinders move, they force the brake pads or shoes tightly against the rotors or drums allowing the car to stop quickly.

The size of the pistons in the master cylinder and in the wheel cylinders are carefully selected when designing a car. This allows drivers to apply moderate pressure on the brake pedal when stopping, but creates tremendous pressure applied at the wheel cylinders. A car can then stop quickly even at high speeds. Depending on how much force is applied to the brake pedal, the pressure in a car’s brake lines will typically be in the range of 800 PSI to 2,000 PSI.

Master Cylinder

When to replace the master cylinder?

  • External fluid leaks. There should be no fluid visible on the external surfaces of any portion of the master cylinder or the plastic fluid reservoir.
  • Low, slowly falling, or spongy brake pedal. Faulty internal seals on the piston can cause internal leaks and also seepage of brake fluid into the power assist brake booster. Internal leaks will typically be accompanied by a low pedal, a spongy brake pedal, or a pedal that slowly sinks as you maintain pressure. In all cases, you will experience reduced braking abilities.
  • Discolored brake fluid. No brake fluids, other than those specified for the year, make, and model, are fully compatible with a car’s internal rubber seals in the master cylinder. Discoloration of brake fluid can also occur due to moisture and particulate contaminants in the fluid.
  • Warning lights on the dash. If the brake system warning light illuminates, there are several potential causes but failure of the master cylinder is in the list of causes that would have to be investigated.

How do mechanics replace the brake master cylinder?

  • On vehicles with power brakes, the master cylinder is bolted to the metal housing of the power brake booster. There is usually an electrical plug connecting to a brake fluid level sensor on the master cylinder reservoir and that plug must be disconnected.
  • Once all steel brake lines are disconnected from the master cylinder, the master cylinder is unbolted from the brake booster and removed from the vehicle.
  • The new master cylinder must be bench-bled to expel air from internal passages that contain the piston. Then the new master cylinder is bolted to the brake booster and the brake lines are reattached. The electrical plug for the fluid level sensor is reconnected.
  • Whenever a new master cylinder is installed, brakes lines to wheel positions must be bled to remove air, old fluid and contaminants. If your vehicle is equipped with anti-lock brakes, the mechanic may use a bidirectional scan tool during brake bleeding to actuate the ABS pump, thus ensuring that all air is removed from the complex valving in the ABS system.
  • All brake line connections that were removed during the master cylinder replacement are inspected for any leakage and the vehicle is road tested to ensure normal operation of the brakes.

Is it safe to drive with a master cylinder problem?

No, any fault in the master cylinder, which is part of the braking system creates a safety risk. A fully operational brake system is essential to quickly stopping your car. Driving a vehicle isn’t safe, if the master cylinder is leaking or has other faults, as braking distances might be longer than normal. The braking system on a vehicle is among the most important safety systems and must be fully functional to safely drive your vehicle.

When replacing the master cylinder keep in mind:

  • The master cylinder is only one component of many in a vehicle’s braking system. During replacement of the master cylinder, all vehicle braking system components should be inspected to ensure maximum braking power is available.
  • The amount of friction material remaining on the brake pads and brake shoes should be verified.
  • Brake lines and flexible rubber hoses at each wheel position should be inspected for corrosion and deterioration.
  • The power brake booster should be evaluated to ensure that power assist is working properly.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(8)

Rating Summary
8
0
0
0
0
8
0
0
0
0

Arturo

28 years of experience
303 reviews
Arturo
28 years of experience
Mercedes-Benz 380SL V8-3.8L - Brake Master Cylinder - San Diego, California
Did a great Job.

James

27 years of experience
184 reviews
James
27 years of experience
Mercedes-Benz C350 V6-3.5L - Brake Master Cylinder - Antioch, Tennessee
Very professional.

Michael

16 years of experience
113 reviews
Michael
16 years of experience
Mercedes-Benz ML430 V8-4.3L - Brake Master Cylinder - Saint Augustine, Florida
Professional, knowledgeable and friendly.

Rigoberto

12 years of experience
739 reviews
Rigoberto
12 years of experience
Mercedes-Benz C250 L4-1.8L Turbo - Brake Master Cylinder - Chicago, Illinois
Rigo is a maverick hands down. Don’t take your car for work elsewhere. Especially great at Mercedes—this guy knows his profession! I will be using him for everything related to my car going forward.

Excellent Rating

(8)

Rating Summary
8
0
0
0
0
8
0
0
0
0
Number of Mercedes-Benz Brake Master Cylinder Replacement services completed
88+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

P0661 OBD-II Trouble Code: Intake Manifold Tuning Valve Control Circuit Low Bank 1
P0661 means there is an abnormally low voltage reading within the Intake Manifold Tuning Valve Control Circuit often due to faulty, parts or PCM.
How to Replace a Lost or Stolen Car Title in New Jersey
While While you may think you have placed your car title somewhere safe there is no guarantee that it won't be lost at some point or even worse it could be stolen. This title is what proves you are the...
How to Get Smog Technician Certified in Massachusetts
Automotive technician jobs include smog certified emissions inspectors. In Massachusetts, you must be hired and trained by Parsons to become one.

Why does the TPMS light come on when driving with a spare on the car?

If you’ve had the misfortune of getting a flat tire and have had to install the spare tire, you’ve seen the tire pressure monitoring system (TPMS) light come on in the dash. Why is that? Here’s what you need to...

My Subaru won't start. Have electrical issues.

Hi there. Take a remote stater button and hook it up to your starter. Turn your ignition key to the ON position and have someone in your vehicle with their foot on the brake and the parking brake set. Click...

Replaced front pads on 2008 prius. When caliper was removed the brake pedal was accidently pressed causing piston to push both pads together. Piston was pushed back in. No fluid seeped out.

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com