Lexus ES350 Hissing noise when brake pedal is depressed Inspection at your home or office.

Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

Estimate price near me

Service Location

Customer Ratings

(396)

How A Diagnostic Works

Instantly book a certified mobile mechanic to come to you

Mechanic diagnoses the problem and quotes necessary repairs

Your vehicle is ready to go

Fair, upfront & transparent pricing for all services

Our certified mobile mechanics can come to you now.

Customer Ratings

(396)

Hissing noise when brake pedal is depressed Inspection Service

How much does a Hissing noise when brake pedal is depressed Inspection cost?

On average, the cost for a Lexus ES350 Hissing noise when brake pedal is depressed Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2019 Lexus ES350V6-3.5LService typeHissing noise when brake pedal is depressed InspectionEstimate$114.99Shop/Dealer Price$124.99 - $132.49
2009 Lexus ES350V6-3.5LService typeHissing noise when brake pedal is depressed InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2014 Lexus ES350V6-3.5LService typeHissing noise when brake pedal is depressed InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2011 Lexus ES350V6-3.5LService typeHissing noise when brake pedal is depressed InspectionEstimate$94.99Shop/Dealer Price$112.48 - $125.60
2015 Lexus ES350V6-3.5LService typeHissing noise when brake pedal is depressed InspectionEstimate$94.99Shop/Dealer Price$112.55 - $125.72
2008 Lexus ES350V6-3.5LService typeHissing noise when brake pedal is depressed InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2021 Lexus ES350V6-3.5LService typeHissing noise when brake pedal is depressed InspectionEstimate$99.99Shop/Dealer Price$109.87 - $117.28
2017 Lexus ES350V6-3.5LService typeHissing noise when brake pedal is depressed InspectionEstimate$99.99Shop/Dealer Price$110.24 - $117.94
Show example Lexus ES350 Hissing noise when brake pedal is depressed Inspection prices

Brakes are the most important safety components on your vehicle. Despite that importance, it’s easy to take them for granted, at least until your car begins to do strange things. Ordinarily, pressing your brake pedal should result in only the car slowing down or stopping. If you hear a hissing noise when the brake pedal is depressed, it may mean there’s something that needs to be repaired in the system.

How this system works:

On many cars, the master cylinder works in tandem with a brake booster. The brake booster is mounted to the firewall, generally in front of the steering wheel position, and the master cylinder attaches to it. The entire point of the brake booster is to make it easier to press the brake pedal and slow or stop the car.

Your brake booster works on vacuum pressure. There’s a diaphragm inside that is responsible for maintaining pressure when you’re not pressing the pedal. However, when you do press the pedal, a push rod moves forward within the booster and into the master cylinder. The side of the diaphragm facing the cabin vents to atmospheric pressure, while vacuum is maintained on the other side.

This then equalizes with pressure on the other side of the diaphragm, providing the boost needed to make pressing your brake pedal easier. The hissing noise you hear when the brake pedal is depressed could be nothing more than ordinary operation, or it could be a sign of a deeper problem. There are a couple of different potential issues here, some more severe than others.

Common reasons for this to happen:

  • Leaking Vacuum Line: Your brake booster is supplied with vacuum from the engine via a vacuum hose. It’s usually located near the firewall. If this hose has a leak, it can be heard within the cabin.

  • Leaking Brake Booster Diaphragm: The diaphragm that’s responsible for maintaining pressure within the brake booster can fail, particularly if the master cylinder is leaking fluid into the booster. When this happens, you’ll hear a hissing sound when depressing the brake pedal, but the pedal itself will be much, much harder.

  • Damaged or Missing Foam Silence: Most cars equipped with brake boosters also have a foam silencer that’s designed to help prevent you from hearing that hissing sound. If the silencer has degraded or been damaged, you’ll hear the hissing sound.

  • Failing Master Cylinder: If you hear a hissing sound and suspect that the problem is the diaphragm in the booster, the actual cause is likely the master cylinder beginning to fail. Signs that the master cylinder is leaking into the brake booster include low fluid in the reservoir with no visible leaks.

What to expect:

A top-rated mobile mechanic will come to your home or office to inspect your brake system, including the brake pedal operation, the brake booster and listen to the hissing sound. The mechanic will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How it's done:

The mechanic will need to crank the car in order to verify the hissing sound, and a test drive may be necessary to duplicate the complaint. Additionally, the mechanic will inspect the brake pedal operation, the condition of the brake booster, the master cylinder, the level of fluid in your system and more.

How important is this service?

Power brakes are wonderful things, making it far easier to work a brake pedal that would otherwise require significant force to activate. While the hissing sound may be a sign of nothing more dangerous than a failed piece of foam, it could be a symptom of something much more worrisome – a damaged brake booster and a failing master cylinder. You cannot afford to take chances with your brake system. One of our professional mechanics can inspect the entire system and determine if there’s cause for concern, and what needs to be done if there is a problem.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Lexus mechanics

Real customer reviews from Lexus owners like you.

Excellent Rating

(396)

Rating Summary
379
12
2
0
3
379
12
2
0
3

Patrick

15 years of experience
406 reviews
Patrick
15 years of experience
Lexus ES350 V6-3.5L - Brake Rotor/Disc Replacement (Front) - Richmond, Virginia
Excellent mechanic with nice personality.

Ediee

5 years of experience
47 reviews
Ediee
5 years of experience
Lexus ES350 V6-3.5L - Oil Change - Las Vegas, Nevada
Great experience.

Joel

11 years of experience
146 reviews
Joel
11 years of experience
Lexus ES350 V6-3.5L - Power Steering Pressure Hose - Little Elm, Texas
He was Awesome and enjoy working with him very hard worker and Dedication to his performance.

Emmette

36 years of experience
282 reviews
Emmette
36 years of experience
Lexus ES350 V6-3.5L - Spark Plugs - Fairfax, Virginia
Emmette came early for my appointment and did excellent work. He was completely professional and a joy to talk with. I plan on booking additional appointments with him because he a great auto mechanic.

Excellent Rating

(396)

Rating Summary
379
12
2
0
3
379
12
2
0
3
Number of Lexus ES350 services completed
4356+
services done by our mechanics
TOTAL NUMBER OF EXPERT Lexus MECHANICS
1100+
experts on our platform

Recent articles & questions

Do Wipers Work Better With the Defroster On?
It It seems that sometimes when you’re driving in cool, wet weather, it’s hard to keep your windshield from fogging up. The wiper blades wipe the windshield but they leave streaks. The outside of the windshield is clean but the...
Windshield Laws in Louisiana
Louisiana Louisiana motorists know they are required to follow the rules of the road in order to be safe and legal when driving. In addition to traffic laws, drivers are also required to make sure that their windshield is in...
How Long Does an Automatic Transmission Last?
Be aware of how long your automatic transmission is intended to last and the best practices for extending its life.

Window fell into door

Hi, sounds to me like your window regulator has failed. You would need to take off your door panel. Disconnect the old window regulator and install new one. Reconnect electrical and test to see if the window functions properly. If...

Brakes noise 2013 Honda Civic

You need to have the brakes checked before you drive the vehicle anywhere. It sounds like you have a leaking brake caliper (https://www.yourmechanic.com/services/brake-caliper-replacement) on the right side and lost fluid. It would be best to have an expert scope this...

Oil leak above driver side exhuast manifold

The most common oil leak on these engines (https://www.yourmechanic.com/services/oil-fluid-leak-inspection) is the valve cover gaskets. The gaskets are a mix of rubber and metal or plastic and the rubber will get hard and will not seal very well when the engine...

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