Lexus GS 2006-11 :: Single Knock Noise When Pushed On The Brakes
Aug 29, 2014
Recently, I changed the brakes on my 2006 Lexus GS300. Everything went real smooth with changing the front and back brakes.
When I took it for a test drive, I immediately noticed a SINGLE knock noise when I pushed on the brakes. Also, I noticed that sometimes when I got +50 mph, I'll hear the knocking noise in a repetitive fashion. If I gently apply pressure on the brakes, the knock noise stops. If I let go of the brake, the knock noise returns. It sounds like the knock noise is coming from the front-driver side area.
What the culprit could be? I've taken the wheel off a few times, took the brake pads off, put them back on, made sure the caliper screws were tight, etc.
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The problem appears only when pulling hard from cold start i.e., up hill, as the car warms after about a mile the problem goes away not to return until next cold start. The problem is an engine noise that sounds like a low note knock similar to a big end noise, it sounds to heavy to be tappets or piston slap.
What I can not understand is if it was any of the above it would not go away as the car warmed. Revving the engine at a standstill from cold does not produce the noise, only under load.
The car is a 2006 GS300 with 133000miles on the clock ....
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Gen II Prius at 175k miles is making a new clicking sound. One solid brief single click when the brake pedal is pressed. It doesn't happen every time (about half the time?) but can be heard the loudest at approx. 10-20 mph (possibly because road/wind noise is at a minimum at this speed). The work below was done at my local independent hybrid mechanic at 151k miles but since then I have only done oil/filter changes and checked oil levels, which have looked good.
Turn rotors, pack front bearings and replace pads, gold brake pads, rear brake service, performed induction service, cleaned throttle body, added tank injector additive, 3in1 induction kit, transmission service kit, transmission fluid, transmission service package, performed coolant serviced, drained and refilled coolant system, flushed out contaminants, refilled reservoir, coolant service, inspection, replaced drive belt, drive belt.
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So I'm really good with pointing out cars and what engine they may have but im a derp when it comes to going under the hood. Right now I have a 2009 v6 mustang it probably doesn't matter for my question. This has been going on for awhile and I dealt with it cause I couldn't really hear with my music on. Whenever I push on the brakes to stop it makes a pretty noisy and annoying clicking noise until I stop. Not like that weird siren noise you can here from breaks but a click click click sound. What this might be? Brake calipers need a change or what? Last time I checked, probably last year, the brake calipers were still good.
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When I gently apply the brakes at slower speeds there is a single "click" noise. This happens every time. I took it to the dealer. They said it was normal. I am just trying to find out if indeed it is. Do other people get this click when they apply the brakes.
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I own a 2004 VW GTI VR6, with 70k miles. i bought it used (at 40k) from carmax. Ever since I've owned it I have had a problem with a single loud knock sound i can hear from my front left wheel.
it happens in two scenarios1) when i back out of a parking space and start turning my wheel - it's only a single knock (hence i don't think it's the CV, and its been pretty constant for at least 2 years), and happens at about halfway through the steering wheel travel.2) it also happens when i accelerate hard, or decelerate. it's a single knock, or pop, or clunking sound. it almost feels like something is loose, or reseating itself as the car puts pressure on the wheel as i accelerate, and then again once again when the car decelerates.
it's pretty damn loud, and disconcerting... i can feel it in the steering wheel as well. it seems to be louder when the car has not been driven for a few days.
I've taken the car back to carmax several times over the past three years but they have not been able to find the fault. they have replaced my engine mounts twice (in 30k miles that I've had the car), which i also think is a little weird. they have also replaced all the tie rod ends, etc. - all the obvious stuff.
I am at my wit's end here - carmax pretty much think I'm crazy, and my warranty has run out, but i think I've bought a car that was in an accident - i'm expecting my front end to fall apart one day as I'm driving...
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I have a 2008 GS350 AWD with Mark Levinson sound. There is a satellite radio button but nothing happens when I push it. Do I need to locate the number and get it activated before it'll work?
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I have a 2010 Ford Ranger Sport. RWD with the 4.0L. Currently Sitting at 46,000 Miles.
Where I am located, it is very cold. Downwards of 5 Degrees F. I just started noticing a strange sound in my truck. When accelerating from a stop light I hear a single knock, and to my ear it sound as if it was coming from the rear. First thing I did was check the U-Joint, but there is zero play and it is very tight.
After driving quite a lot and unable to diagnose the problem, I part and got out of my truck, only to hear that same noise when I stepped out of the truck. (I am not fat 195b lol). So I sat back down and I heard it again. Did this a few times and consistently heard it. I got into the bed of my truck and started to jump around and got the same knock.
I shook the exhaust pipe to see if it was making the noise, but it wasn't, which makes sense considering while driving over bumps I could not hear anything. I am totally lost as to what this could be....I want to add that I CANNOT feel any difference driving. Feels great.
My ideas on problems are as follows;
-Spare tire
-bushing
-loose bold
-leaf spring (maybe a hanger)
-The cold creating noise like always.
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the other day i was driving with no music on my GS and i noticed every time i came to a complete stop, the brakes would produce a weird loud knock sound. it was rainning so i thought it would be from that... but then after driving it roughly 5-7miles the sound stopped... then since i noticed it, i hoped on my corolla to see if it had the same thing but no... only on my GS.. is this normal?
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I have a grinding noise coming from what I believe are the front brakes. It happens when I apply the brakes and sounds like the brake pad is worn out and there's metal-on-metal contact but when I checked the pads, they are at 80-90% (rears have about the same amount left). I hear it the loudest just before coming to a full stop, from about 20 mph down to stop. I thought it was caused by rust on the brakes but after I wore off the rust, the sound is still there.
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when i initially purchased "used " my 08 gs350 i had a problem with brake squeal. I kept taking it in to the dealer until they ended up changing front rotors , all 4 pads , and new shims .
Took my car into my usual mechanic to get an oil change. I knew i needed brake pads and he changed all four pads out for $350 .I am having a terrible time with brake squeal now. the mechanic is telling me that i have warped rotors and need to replace all four. He is telling me that he wont charge me labor, but the parts will cost $400.00 I goggled the cost of the parts and he isnt far off on the price . My concern is that his fix isnt the correct fix. Front what i can tell its the front rotors making all the racket.
What should i do ??I dont know if they re-installed the shims and have no idea what kind of pads were used . Thinking about taking it to the dealership and being done with it .
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I have a 2006 Lexus is350 that has the rather terrible high metallic oem brake pads. The rotors and pads are in great condition, however they produce the most horrific ear piercing screech that can be heard for miles and I've even had people get out of their cars at stop lights to tell me my brakes are really bad. Like I didn't know... So, I've been researching replacement parts while I suck up the fact that I'm probably going to be dropping hundreds of dollars on a cosmetic issue, but it's really so terrible I think I may have to break up with my car if I don't fix it soon.
I've pretty much decided on not skimping, because from all that I've read it seems that given the known issues with the IS line's brakes they really need high quality ceramic and low dust pads. I've been reading a lot of good things about ebc redstuff pads, as well as some good things about akebono premium pads. I also am really confused about what to look for in a rotor.
Lastly, should I do the replacement myself? I'm kind of a novice at diy car repair, in my old (86) volvo I did most of the maintenance and repair myself, but I never had to do brakes or any of the other big things. Just littler things like power steering fluid reservoir, throttle hose, water pump and a few other things. Would I be in over my head replacing my brakes myself? They are just so vital it freaks me out a little bit if I don't do it right things will go terribly for me...
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My less than 7000 miles RX started making noise when I pushed the brake pedal. Evidently it sounded like the "LS brake squawk" according to service foreman. Not sure if the actuator is same in all RXs.
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2007 GS 350. In the past 6 months i have changed my FRONT brake pads with two different pair. First was a generic pad(REMOVED), and did some research then went for Akebono(CURRENTLY) brake pads 2-months noise-free and now back to braking noise dilemma.
Issues:
-In the morning, first 3-5 pressed brakes makes loud(REALLY LOUD!) humming noise then goes away. Feels like the brakes are rusty but it continually does it everyday. I just got the car serviced so assuming all my fluids are filled.
-Randomly, on a fully stopped brake i hear a whistle noise from the front brake. NOT as loud described above.
-I noticed the noise happened the most on HOT weather, and occasionally on COLD weather.
Longo Lexus advice me to buy an OEM brake pads and should resolve this problem. I'm also thinking of just getting it done at the dealership and pay that extra cash plus warranty.
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I just bought a 2007 GS350 that had 45k miles and have noticed something strange with I believe the transmission. So far I have has 2 times when I have hit the brakes hard and had to accelerate again and either heard a clunk noise or even had the tires burp once after the clunk. Tonight I hit the brakes hard to avoid a red light and heard a clunk. I'm going to get it checked out at the dealer but I bet they will tell me they can't reproduce the problem. I have 2 other Lexus's (IS300) and have had no problems so this is a first.
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I just had my front brake pads replaced by a local shop. I am now hearing a clunking noise every time I step on the brakes. I got the brake pads from the local Lexus Dealership but had them installed by a local shop. Is it normal to have this clunking for the first couple hundred miles until the brakes "wear" in or do I need to have someone else look at the brakes?
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I just got a 2009 lexus gs 350 everything is perfect except when i go into reverse and back up slowly the brakes make a loud squeaking noise!! Its really annoying and embarrassing. I got the rotors resurfaced and nothing.
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I just bought my car 2 months ago from a dealer, the dealer said they fixed a router and bled the breaks. A week after I got it, I pushed the brakes and they had no resistance on them. I did it again and they were fine, so I just thought I was nuts. Later that week it happened several more times. I had my boyfriend bring it back to the dealer and they drove it and convinced him that Ford just has speed sensing brakes and that it was normal.
It went away for a month so I really didn't say too much more about it. Now every time I hit the breaks there is no resistance until I get it all the way to the floor. It will still stop, but only if it's pushed firmly to the floor, and hitting the brakes all the way to the floor is not a very smart thing to do in the winter, so I have slid many of times because of this. Am I just supposed to live with the supposed "speed sensors" or is there something really wrong?
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I just purchased a 2006 GS300 AWD w/115k. Started car on lunch hour to find check engine / check VSC lights on. Ran codes to find P0333 Knock Sensor code. Vehicle seem to run perfectly fine, but now that the light is on, it is definity spark knocking under acceleration. This is my first Lexus / Toyota product, so I am unfamiliar with the common problems or fixes. Are knock sensor replacements common?
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Why won't my hatch light turn off unless, I depress the brake pedal? I even disconnected the wire going to the latch and the light still won't go out?
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This truck has been giving us problems off and on for a while now. Whenever I am sitting at a stop light for example and the truck is in drive but I have my foot on the brakes it acts like it's trying to lunge forward and the engine is revving and shaking the whole truck. My husband just drove it this morning and now whenever it gets really wet outside the truck doesn't want to go anywhere. He said he was flooring it and he was only going about 20mph and the engine looked to be shaking bad. I have no clue what could be going on?
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