Lexus LS 2007+ :: Actuator Noise / Pump Pulse Sound During Braking
Dec 10, 2012
My 2007 LS 460 makes a noise like a pump pulse sound during braking. When I step on the brake before coming to a stop there is no noise but once the car is 20 feet before coming to a complete stop at times you feel and here a pulse or pump or vale sound in the front engine area. Sometimes as I increase pressure on the break pedal a little harder you can feel and here a single pule and at times 3 or 4 valve or break pump sound. What might be going here? I am certain the sound is not coming from the wheel area. It is definitely under the hood. Could it be a faulty load sensing proportioning valve or booster?
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I recently purchased an 08 ls 460 and started noticing the infamous clicking sound coming from the ABS brake actuator under the hood. A $3000plus fix that is not in the budget nor will it ever be!..After doing some research trying to figure out what the actuator does i stumble across this Lexus technician PDF ...
..It clearly states on page 2 that "If a Toyota ABS system malfuctions, normal braking will not be affected!...My worry has never been the sound it makes,.. but that of me not being able to brake when needed!!...
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I have searched and heard a lot about the brake actuator problems... but the noise I get is not a clicking noise.
My brakes have a noise when i press the brake all the way down and release it quickly... but its much more of a quick "scrubbing" noise... .almost a "creaking"... is this the brake actuator? or something else? I just recently got new pads and rotors at NTB... and the sound seems to have come after the install. i took it back in and they said they had no clue. Also , they did bleed the brakes when they installed new pads and rotors...
The noise really only happens when the car is in gear lunging. In park it happens one in 10 times as opposed to every time in gear.
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My 2007 Prius (151,000 miles) just started making what sounds like a scraping sound when in motion. This does not happen every time I drive it. The dealership said I need to replace the brake fluid actuator pump.
He couldn't really tell me what would happen if I don't have it fixed. He said perhaps the power brakes would go out, or maybe the anti-lock brake system. Either way, I don't want to mess with possible brake failure. But the cost of this repair is so high, and my car already has 151,000 miles. I'd love to drive it to 300,000 miles if I can, but am I being realistic? I'm wondering if it's worth investing this much money in a car with so many miles.
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Both my wife and I noticed that whenever we brake moderately to hard, we can hear water sloshing around. The sound is coming from the driver side underneath, like maybe from the gas tank? Is this normal? We just purchased this car last month (2007 LS 460L) and love it! This is our third LS (Ls 400, 430 and now 460). What's going on?
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I am having a noise when I brake its almost like a rattling noise I am hearing from the rare passenger side i think.
I checked and made sure there was nothing loose rolling around in the trunk. any nothing loose.
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I just had new pads(ceramics, not sure of the brand) all around and new front rotors installed from a local shop that I trust. When braking while cold, there is a grinding sound and feel, I took the car back to the shop, they've acknowledged the issue, double checked their work, and are willing to replace the pads if it continues, which it has. Is there a break in period for ceramics, should I specify a different type of pad.
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Having issues with door lock actuators going out? I wanted to make sure that the motors (Mabuchi) are still the same for the ES?
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I know that the brake actuator on the early LS460s has an issue. How do you know it's actually failed or is failing?
Do the brakes stop working?
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I have a '99 E350 van that I am feeling a light anti-lock brake pulse in the pedal when I am rolling to a slow stop under light braking. Braking doesn't seem to be affected, but it doesn't feel right. I tried locking up the brakes and didn't feel any anti-lock pulse...seems backwards.
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I started having an issue with my lexus ls460 2007, the radio works good, but sometimes the sound doesn't come out, in other words even on max volume I can hear almost anything, a clicking sound comes out with this problem, the thing is (hands free) works perfect, navi guidance works amazing, except all radio sounds including AUX gives out lil sound which I can't hear.
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I have noticed that when I open the door to the driver's side after the car has been sitting overnight that the pump noise is longer than half a year ago when i bought it used. It used to last for max. 3 or so seconds, and now it takes 5-10s - depends. I can get into car and almost get it into ready and then it ends.
Also, every second or third time i press the brake (normal, like when stopping gently) i can hear the sound of the pump for around 2 seconds. I don't remember that happening before so is this or isn't normal?
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I purchased a used LS 460L w/ 60k miles after a few months noticed a rumbling sound front end noise took it to dealer was told upper and lower control arms and bushings needed to be replaced at a cost of $4,000. Looking for options have a friend with LS460 w/90k miles no problems must be the L version issue ???
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The sound system in my 2008 LS 460 suddenly stopped and a loud thumping noise comes up in all speakers even if the radio is turned off. There is no music at all only that loud noise. Bluetooth does not work as well as command voice and the GPS guiding system. I had to remove the fuse to stop the thumping sound. To answer my telephone I must pull on the side of the road and turn off the motor. Car dealership said that it is the first time they see that. The car is scheduled to be looked at in a couple of days.
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Purchased a new LS 460 first of this year. Definitely not as quite as my LS430 and has an annoying pinging sound which the dealership says can't be fixed and is a normal sound for the car. Talked today with Service Manager and his lead mechanic and was told this is normal.
Problem: When I purchased this car for wife I had an expectation that it would be a quite running car. Not sound like a diesel engine, especially when at idle. I've read about others with the same problem and wonder if there is a fix out there for this annoyance. Lexus claims it is a fuel injector noise. Some people here stated that had there car fixed by Lexus Engineers.
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I'm experiencing a really annoying issue with my 2007 3.3L sonata. Whenever I am making a right turn (with the breaks applied), I hear a knocking or "popping" sound from the driver's side front end. It's not a single "pop", but multiple "pop"..."pop"..."pop". The noise does not occur when making a right turn without the breaks applied, not does it happen when making left turns. Also, during a right turn, if I release the breaks, the sound will immediately stop. The car only has 64k KM (about 40k miles).
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MY Ls460 2010 AWD is making annoying ticking noise since I bought it 2 months ago ( 76k milage ) , it seems that the sound is mainly coming under the hood on right front fender side .
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I usually get this sound when the engine is completely cold. I get a weird pulsating sound that's very loud, after the engine warms up a bit. It goes away completely.
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On the drive home today I noticed a new sound on my 14 300h. On quiet subdivision streets, every time I press the brakes I hear a 'click', almost like a relay engaging, before the brakes start slowing down the car. I think it may be a relay but I never noticed this before. The sound is definitely from inside the engine compartment. Noticed this sound on 300h? It is very faint but repeatable with the brakes. I only hear it with the radio off.
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I currently have a 07 LS460. I've been rather happy with my car, until now. Over the last month I've developed a popping noise when turning left and braking. I took the car to my local import specialist, there it was determined that my lower ball joints were going bad. After a few day of looking and calling around...I can't find them! Lexus says I have to replace both steering knuckles because the ball joints are pressed in! I refuse to believe this! Is there anywhere I can just buy the lower ball joints without the knuckle?
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This problem is recent and only happens when it rains. When braking to a stop, I get a thunk or two. I only having hearing in one ear, so where the sound might be coming from. I ruled out loose things knocking around. The last time I was driving in the ran, I got the thunking only the first one or two times I braked, and then nothing. Other times I have gotten it repeatedly in a single drive. I have never gotten it while braking except when coming to a stop. I don't get it when merely slowing down in traffic or the freeway. I back into my driveway and I am wondering if braking in reverse has any bearing on this problem.
I searched here and on the internet. The problem exists out there as I have described it, but no posts that I can find have identified the problem. The truck has disc fronts and drum rears. I took the front tire off on the drivers side when I re-seated the front wheel bearings. I was going to repack them, but didn't feel like pulling the caliper, so I just re-seated them. I repacked them not that long ago and didn't feel it was worth the trouble at the time. I didn't bother to pull the tire on the passengers side. While I was at it, I greased all the ball joints.
I can't recall exactly when I first started hearing the clunking, if it was before or after the whole U-joint/carrier bearing campaign, but I became acutely aware of it afterwards, perhaps because that's when we got a lot of rain. There is absolutely no driveability issues at all, just the clunk when braking to a stop in the rain.
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