logo

Lexus RX400h 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

(94)

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.

See availability

Customer Ratings

(94)

Brake Master Cylinder Replacement Service

How much does a Brake Master Cylinder Replacement cost?

On average, the cost for a Lexus RX400h Brake Master Cylinder Replacement is $446 with $208 for parts and $238 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2007 Lexus RX400hV6-3.3L HybridService typeBrake Master Cylinder ReplacementEstimate$680.22Shop/Dealer Price$795.11 - $1115.68
2008 Lexus RX400hV6-3.3L HybridService typeBrake Master Cylinder ReplacementEstimate$664.90Shop/Dealer Price$774.54 - $1091.17
2006 Lexus RX400hV6-3.3L HybridService typeBrake Master Cylinder ReplacementEstimate$664.90Shop/Dealer Price$774.61 - $1091.30
Show example Lexus RX400h 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

Number of Lexus RX400h services completed
1034+
services done by our mechanics
TOTAL NUMBER OF EXPERT Lexus MECHANICS
1100+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

Meet some of our expert Lexus mechanics

Real customer reviews from Lexus owners like you.

Excellent Rating

(94)
Rating Summary
88
4
0
0
2
88
4
0
0
2

Richard

12 years of experience
450 reviews
Request Richard
Richard
12 years of experience
Request Richard
by Barbara
Lexus RX400h V6-3.3L Hybrid - Car Battery Replacement - Washington, District of Columbia
Terrific experience. Richard let me know when he was arriving and he was there promptly. He knew exactly what he was doing. He was courteous and cleaned up when he was finished. I would recommend him. Barbara

Noe

37 years of experience
604 reviews
Request Noe
Noe
37 years of experience
Request Noe
by Bob
Lexus RX400h V6-3.3L Hybrid - Oil Change - Seattle, Washington

Brikk

19 years of experience
389 reviews
Request Brikk
Brikk
19 years of experience
Request Brikk
by Frankie
Lexus RX400h V6-3.3L Hybrid - Mass Airflow Sensor - Huntersville, North Carolina
Mr. Bennett was on time and was very professional and straight to the task. No check engine light anymore. We will follow up with another appointment for maintenance next month after the holidays, I hope he will be our mechanic again. I highly recommend him.

Johnny

34 years of experience
392 reviews
Request Johnny
Johnny
34 years of experience
Request Johnny
by Jerry
Lexus RX400h V6-3.3L Hybrid - Brake Pads Replacement (Rear) - Roseville, California
Very knowledgeable and friendly. Johnny did a great job on my brakes and the walk through.

Excellent Rating

(94)
Rating Summary
88
4
0
0
2
88
4
0
0
2
Number of Lexus RX400h services completed
1034+
services done by our mechanics
TOTAL NUMBER OF EXPERT Lexus MECHANICS
1100+
experts on our platform
Yourmechanic was featured in

New York Times NBC CBS Forbes INC Tech Crunch

Learn more about us

Recent articles & questions

Child Seat Safety Laws in Nevada
In In the state of Nevada, seat belt use is mandated by law. So are child seats. Nevada doesn’t just consider child safety seats to be a good idea – they’re absolutely required. These laws are in place for the...
Read more
Understanding the Ram Oil Change Indicator and Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Ram Oil Change Indicator tells you when and what service your car needs.
Read more
Top Automotive News & Stories: August 27-September 2
This week's top auto news: Bosch water injection, new Cadillac cars, White House addresses traffic fatalities, electronic recall notices, and more.
Read more

My truck runs till it gets warm then acts like it has no power.

Hi there. It seems that your vehicle has multiple malfunctions that are happening at the same time. The idle air control valve has a fault, evaporative emission system has a large leak, the gear ratio is incorrect, and knock sensor...
Read more

I smell gas and it blows white smoke out of the exaust.

Hi There, There are a number of things that can cause poor fuel mileage. A faulty camshaft position sensor (https://www.yourmechanic.com/services/camshaft-position-sensor-replacement) is one of them. The camshaft position sensor is a magnetic sensor that monitors camshaft speed to regulate ignition timing...
Read more

Power steering noise after pressure hose replaced

Anytime you blow out a major power steering hose you may have damaged the pump from lack of lubrication but also when work to replace the hose is done the system will get trapped air in the system fluid and...
Read more
  1. Home
  2. Estimates
  3. Lexus
  4. RX400h
  5. Brake Master Cylinder Replacement

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 (844) 997-3624 · hi@yourmechanic.com

Read FAQ
GET A QUOTE