Wooshing noise when braking; brake failure

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Troubleshoot my Toyota Noah brake problems and failure

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Dec. 9, 2017 - Discover the right way to detect your Toyota Noah brake disorders symptoms and then repair them. Brake noise, spongy pedal, high pedal ... Missing: 2014 ‎' Must include: 2014

Brake override - Active safety features - Brain on Board

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Brake override is an active vehicle safety feature designed to work as a failsafe ... gas and the brake are pushed down simultaneously) or an electrical malfunction ... Toyota.ca. ACART. 19.2% of drivers think safety features can protect them ... Despite the different names, all the systems work in fundamentally similar ways.

Toyota recalls 1.75 million autos worldwide to fix brakes, fuel ...

www.theglobeandmail.com > recalls > article21104004

Oct. 15, 2014 - Toyota recalls 1.75 million autos worldwide to fix brakes, fuel leaks ... plant in Sta Rosa, Laguna, south of Manila August 11, 2014. ... Toyota Motor Corp. called back 1.75 million vehicles worldwide to fix braking and fuel systems flaws, the ... Toyota first received a report of a problem that prompted the fuel ...

what are the symptoms.? there are over 20. or so.

1. leaking DOT 3/4 fluid. , at every inch of the way, in system.
2. stopping distance increased.
3. pulling (steering changes as you brake)
4. locked up brakes, 1 or any of all 4.
5. noise
6. ABS OR traction control (stability) lamps glowing
7. ABS failure. of any kind.
8. DTC errors, from the scan tool related to brakes.
9. no hard pedal,
10. pedal drifts to the floor.
11. spongy brakes.
12. pedal play is wrong , or height.
13. power assist part of brakes , inactive.
14. DoT 3/4 fluid levels keep dropping.
15. rusty brake lines
16. brake hoses cracking.
17. im sure there are more, ....

the air you hear is probably coming from the power brake booster as a woosh noise. and unless it is affecting braking its probably something that has always been there but you just noticed it. the power booster is mounted to the firewall were the brake pedal pushes against it to give you power brakes.

Hi Sdill, That must have been scarry! I suggest looking at the following:- Make sure there has been no separation of the brake linings from the mountings. Make sure that the rear brake assembly locators and retaining mounts have not come adrift. Check the front calipers and brake pads. Check the pedal movement and determine the normal movement with the engine running (car stationary) and the engine off and let me know the travel distance. Check for any signs of leakage of brake fluid on the inside of any of the wheels. Check for signs of leakage from the brake master cylinder. Check the flexible brake hoses for swelling or breakage. Check for broken or loose fitting of the hose to the brake booster and the one way valve operation of booster valve. When the failure occurs is there any braking effect at all? or does the pedal go to the floor with nothing happening? I'll be waiting for your reply. Regards John

Hello rickyjkoch: My name is Roger and I will help with your question. With the engine off, press the brake pedal down several times. Hold the pedal down and start the engine. The brake pedal should drop 1 1/2 to 2 1/2 inches toward the floor. If the pedal stays up and does not drop the booster has a problem. However if you hear a hissing sound from the dash area of the brake pedal the booster should be replaced. Should you need further help please just ask. Please rate the answer. Thank You for using Fix Ya. Roger

I sounds like you have air in the system I would start by bleeding the entire system,when did the wooshing sound start before or after you replaced the brakes,and witch brakes did you replace(front,rear or all)

from the sounds of things you might have an air leak in the system somwhere, check your hoses for splits what happens is the system is overcompensating for you using the brake as this activates the brake servo and "steals" the air have a listen arround the engine bay area and see if you can hear a wooshing sound or a sucking sound, that might solve your prob, hope this helps

jcakey: My name is Roger and I will answer your question for you. From what you describe the problem sounds like a bad vacum brake booster. A simple way to check is to do the following. With the engine off. Press on the brake pedal 4 or 5 times. This will deplete all vacum in the booster. Next start the engine while holding your foot on the brake pedal. The pedal should drop a couple of inches. If the pedal does not drop. The problem is the brake booster. When the booster is bad you will hear a hissing sound inside of the truck when you apply the brakes..
If the master cylinder is faulty you will wave mushy brake to no brakes.Your ABS and brake failure lights will be on. Should you need further help please just ask. I will be glad to help you. Please rate this answer as this is how we know your answer was useful.Thank You for using Fix Ya. Roger

It could be a loose caliper or a caliper with a sticking piston, causing brake drag. Something could have loosened up, since you say the brake job was recent. Hope this helps and best wishes.

Sounds like it could well be the brake servo unit.