Buzzing/Vibrating Brake Pedal

[BlueRidge77]

Another brake thread......

I posted this in another thread and decided to Create my own.

I was involved in another thread talking about grabby brakes and my wife and I have gotten used to it!! Took longer than we anticipated, bet 3 weeks and we're good!!

I have noticed something that started yesterday and it has been doing It since. It's not the "swooshing" others have talked about. Mine makes that but not much different than other vehicles I've owned. Thats not a big deal.

Mine makes a buzzing sound and whatever it is, it also vibrates the pedal. It vibrates for 1-2 seconds after depressing the brake pedal. I'm careful to not trigger the emergency stop feature. If I barely press the brake pedal, it doesn't seem to do it. Once more force is applied (even slowly), it does it. It does it whether moving or sitting still. Whether in park or in drive or in reverse. It even does it when the engine isn't running , but the key must be ON. (Not Acc.) Its quite loud and the buzzing feeling is quite noticeable. Very easy to hear and feel since the car doesn't have to be running...

I just noticed when I made a video this morning, it does it when you first turn the key to the ON position. Normally I proceed past that to start and don't notice it. It does it for a longer duration when first turning it to ON. Maybe it's a pump building pressure?

While it is possible I will "get used to it" like is often said and has already occurred on the overall feel and sensitivity of the brakes, this concerns me because it wansnt doing it before. I did have new tires installed on a Sunday, but it wasn't doing it right after or on Monday. Since it does this even when it's not running or moving, it seems unlikely to be that.

Here is a link to a video. Key is ON. Engine isn't running. The noise is not the mechanical pedal or swooshing, but a buzz/humm afterwards.

https://www.dropbox.com/s/km4njk3trfp6tvz/File Jan 18, 7 34 10 AM.mov?dl=0

Has anyone had this buzzing in the pedal and it does it even when the engine isn't running? Thoughts appreciated. I'll keep my eyes and ears (and even foot) on it in case it changes. I'll probably take it by the dealer and see what they say. Zero chance they will be able to say they don't hear it or feel it... thanks!

 

[rb92673]

Does it feel like you are stepping on a cell phone that is vibrating? Mine does that too. 2016 Limited.

 

[oljedi11950]

Um goggle search ?

 

[BlueRidge77]

Does it feel like you are stepping on a cell phone that is vibrating? Mine does that too. 2016 Limited.

That is a fair description. Does it do it every time you press the brake?

I would understand it doing that when first starting the truck to build pressure or to prepare the brake system after the vehicle has been started, or even when you are under an emergency brake situation where the brake assist kicks in, but EVERY time the pedal is pressed...?

Before yesterday, even if it always did it at start up and I didn't notice it, it wasn't doing it every time I pressed the pedal. (Lets say I was wrong and it was doing it every time I pressed the pedal, it certainly has gotten much more severe...)

 

[JPOVS]

Mine did that from the day I took ownership. I would press on the brake and feel a pulsating sensation coming from the brake pedal. Didn't matter what speed I was going or how hard I pressed the brake.
I brought it to the service shop and they said it was a brake actuator assembly. Said without warranty it would cost over $2,500 just for the part and at least $1,000 for labor, with a total cost of about $4,000 for the job.
Luckily I got the only one in inventory in the USA, back in July.

 

[BlueRidge77]

Um goggle search ?

Thanks for the suggestion. I did that. Like these....

http://www.toyota-4runner.org/5th-gen-t4rs/62159-vibration-brake-pedal.html

http://www.toyota-4runner.org/5th-gen-t4rs/80103-rapid-vibration-brake-pedal-even-park-2.html

https://www.4runners.com/threads/2015-4runner-brake-pedal-vibration.510/

But the majority of people say things like, "its normal" and "you'll get used to it"... Some complain and never post anything else. A few said they had their master cylinder replaced and it didn't do it anymore. Nothing super clear and I didn't see a post where it said they had it happen when the car wasn't running... Anyhow, many of those threads started back in 2010 and I would imagine much has changed since then. If I missed a post that provides a clearer answer, I would appreciate a link. If you just assumed I didn't search, that is not the case.

I definitely want to be prepared before going to the dealer and you guys are the experts! Thanks!

 

[BlueRidge77]

Mine did that from the day I took ownership. I would press on the brake and feel a pulsating sensation coming from the brake pedal. Didn't matter what speed I was going or how hard I pressed the brake.
I brought it to the service shop and they said it was a brake actuator assembly. Said without warranty it would cost over $2,500 just for the part and at least $1,000 for labor, with a total cost of about $4,000 for the job.
Luckily I got the only one in inventory in the USA, back in July.

Thanks! That's helpful! So this fixed the problem? Hasn't happened since? Thanks!

 

[JPOVS]

The pulsating in the brake pedal has been eliminated since it was replaced.

 

[rb92673]

That is a fair description. Does it do it every time you press the brake?

I would understand it doing that when first starting the truck to build pressure or to prepare the brake system after the vehicle has been started, or even when you are under an emergency brake situation where the brake assist kicks in, but EVERY time the pedal is pressed...?

Before yesterday, even if it always did it at start up and I didn't notice it, it wasn't doing it every time I pressed the pedal. (Lets say I was wrong and it was doing it every time I pressed the pedal, it certainly has gotten much more severe...)

Not every time, but regularly. I don't really notice it anymore. I have never felt the ABS or the panic braking.

 

[oljedi11950]

Thanks for the suggestion. I did that. Like these....

http://www.toyota-4runner.org/5th-gen-t4rs/62159-vibration-brake-pedal.html

http://www.toyota-4runner.org/5th-gen-t4rs/80103-rapid-vibration-brake-pedal-even-park-2.html

https://www.4runners.com/threads/2015-4runner-brake-pedal-vibration.510/

But the majority of people say things like, "its normal" and "you'll get used to it"... Some complain and never post anything else. A few said they had their master cylinder replaced and it didn't do it anymore. Nothing super clear and I didn't see a post where it said they had it happen when the car wasn't running... Anyhow, many of those threads started back in 2010 and I would imagine much has changed since then. If I missed a post that provides a clearer answer, I would appreciate a link. If you just assumed I didn't search, that is not the case.

I definitely want to be prepared before going to the dealer and you guys are the experts! Thanks!

Not the case at all , simple suggestion in lieu if waiting for a response ! So many different things but most are abs related . Yes from 2014-17 imagine lots of upgrades , to many damn computers, ecu, modules jeez ! :guitar2:

 

[lakerman]

Yup

Did it I have it, I was worried too, used to it.

 

[Blitzkrieg]

Mine did that from the day I took ownership. I would press on the brake and feel a pulsating sensation coming from the brake pedal. Didn't matter what speed I was going or how hard I pressed the brake.
I brought it to the service shop and they said it was a brake actuator assembly. Said without warranty it would cost over $2,500 just for the part and at least $1,000 for labor, with a total cost of about $4,000 for the job.
Luckily I got the only one in inventory in the USA, back in July.

Just FYI - found the OEM actuator for $1980 FWIW. Still expensive as hell, but $500 less hell.

 

[BlueRidge77]

Just to close the loop on this. I took it to the dealer and they said what I assumed they would say, it's normal... They did compare it to another new 4Runner on the lot.... And it did seem very similar to me...

I will say this: The day I took it to the dealer, it didn't seem to vibrate as bad. Since then, there have been a couple of occasions where it was more noticeable than others; somewhat sporadic. For a bit, I thought it might have been the type of shoe I was wearing because I never noticed it when I was wearing my thick soled boots, but noticed it when wearing dress type shoes... That does change how apparent it is, but it's still there and there are still days where it vibrates harsher than others, even to the point I can actually hear it.

I'll continue to be aware and monitor it. At least the dealer did a good job checking it out and documented it...

 

[Simpleman74]

add blinker fluid

 

[BlueRidge77]

add blinker fluid

Indeed. Seems a bit low...

 

[DurangoMax]

Buzzing/Vibration Coming from Rear of Vehicle When not Running

Similar issue but not the same as buzzing when you depress the brakes but I can't seem to find anything like this out here.

2016 Trail with KDSS - several times I have stepped into the garage several hours after coming home and have heard a buzzing sound coming from the rear to the vehicle. Oddly enough, both times it has stopped while I was out there trying to get create an audio tape of the sound. I looked to see if anything was left turned on in the vehicle and everything is off.

Going to head to the dealer to see if they have any thoughts but wanted to check here first.

 

[BlueRidge77]

Similar issue but not the same as buzzing when you depress the brakes but I can't seem to find anything like this out here.

2016 Trail with KDSS - several times I have stepped into the garage several hours after coming home and have heard a buzzing sound coming from the rear to the vehicle. Oddly enough, both times it has stopped while I was out there trying to get create an audio tape of the sound. I looked to see if anything was left turned on in the vehicle and everything is off.

Going to head to the dealer to see if they have any thoughts but wanted to check here first.

Take a look at this post...

http://www.toyota-4runner.org/5th-g...mming-rear-my-4runner-limited.html#post537031

 

[JPOVS]

So because the other vehicle on the lot did it its they say its ok? How about they tell you why its doing this, not just they all do this. Sounds like a bigger issue.

My brake pedal would vibrate/ pulsate while initially pressing down the brake pedal. While it vibrated it made a sound like someone farting or baseball card in the spoke. It would make a pop, pop, pop, pop noise for about 3-4 seconds.

Maybe try another dealership or contact a regional rep.

 

[BlueRidge77]

So because the other vehicle on the lot did it its they say its ok? How about they tell you why its doing this, not just they all do this. Sounds like a bigger issue.

My brake pedal would vibrate/ pulsate while initially pressing down the brake pedal. While it vibrated it made a sound like someone farting or baseball card in the spoke. It would make a pop, pop, pop, pop noise for about 3-4 seconds.

Maybe try another dealership or contact a regional rep.

Mine never did the "farting"/"baseball-card-in-spoke"/"pop" noise. Its a buzzing that feels like a cell phone buzz which feels/sounds like a pump. It is the same sound/feeling I get when I switch the vehicle to "on" even without starting. It feels like an initial charging/pressurizing of the system. I thought it was too intense and too frequent. It's every time I press the pedal. It still does it and at times it is more noticeable as if the buzzing is greater in intensity.

I've gotten somewhat used to it but I still notice it pretty much every time. I still think the buzzing sucks but it is what it is at this point. I don't care if the system requires it, I just wish it was dampened so you don't feel it through the pedal... the truck stops on a dime when needed despite its heft so the brakes do their job well, I just think the driver experience could be better in regards to the brakes. Just my opinion. If things change or get worse I'll take it back and have it checked again and perhaps inquire a little more.

 

[JPOVS]

Mine felt like it was pressurizing something too, and I felt different strengths of pulsating too. Its been fixed for 6 months now and I only drove it for 2 weeks, so I could be off on the sound but I think we had the same problem.
Good luck with the fix if you decide to go that route.