Squishy Brake Pedal

[catrains]

Do any of you all have this issue after braking.
Once at a full stop with the pedal down if you release any pressure at all you start moving forward. And I don't mean letting off the brake I mean very slight pressure. I've almost rear ended someone multiple times at red lights

just checked the idle with scan tool. in park/neutral 750-775 RPM
in gear 650-675RPM . with AC on slightly higher 50 RPM.

this is 125-175RPM more than the GM vehicles I own so more creeping in gear when stopped . most times GM vehicles 550 RPM..in drive or park idle on GM returns to 550 RPM. toyota idle control not as good as my GM vehicles.

 

[Madhunter77]

I have had 2 4runners and both have done the sound but only the 2016 trail i have pulses in the steering wheel, but it is not that bad


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[keph13]

Do any of you all have this issue after braking.
Once at a full stop with the pedal down if you release any pressure at all you start moving forward. And I don't mean letting off the brake I mean very slight pressure. I've almost rear ended someone multiple times at red lights

I've noticed that when the AC compressor kicks in, the idle increases enough to sometimes start the truck moving forward a bit. I've now managed to train myself to increase brake pressure when I hear it.

 

[cryption1]

My 2014 SR5 does it as well and did it from brand new. What mine also does that is super annoying and in 1200 miles cannot get used to is pulsating when braking. Happens i would say 90% of the time. Took it in and the tech said he felt no pulsation. 2 others I drove did not do it.

This is what drives me crazy. The pulsation. The "wet shoe" sound to me is no big deal, but the pulsation feels to me like when ABS kicks on ... but it happens even when sitting at a stop light. It ruined the 4runner for me the first few weeks I owned it, and talked to the dealer about a return - and even considered trading it I hated it so much.

I've gotten used to it now after about 2k miles. It's still there - but only annoys me if I've driven a different car between 4runner drives. I do still truly hate the feel of the brake pedal on the 4unner - but after a time you get used it.

 

[msk2u]

Whats going on with the spongy brakes..

OK, am having the exact same issue now. Didn't happen for the first 100 miles but now same symptoms displaying. Noticed that when put on 4Hi this improved how the brakes felt - maybe this was the placebo effect?!

Not sure if the design of the brakes is geared towards stopping a 2 tonne car effectively depending on what the wheels are doing.

Does anyone know the ratios of power distribution on the 4runner ? e.g. 2HI is it 80% rear and 20% front and then roughly 50% split in 4HI. (currently riding a TEP)

I'll also note that the SR5 (2) that I test drove did not display the spongy brakes..

This is what drives me crazy. The pulsation. The "wet shoe" sound to me is no big deal, but the pulsation feels to me like when ABS kicks on ... but it happens even when sitting at a stop light. It ruined the 4runner for me the first few weeks I owned it, and talked to the dealer about a return - and even considered trading it I hated it so much.

I've gotten used to it now after about 2k miles. It's still there - but only annoys me if I've driven a different car between 4runner drives. I do still truly hate the feel of the brake pedal on the 4unner - but after a time you get used it.

 

[1engineer]

OK, am having the exact same issue now. Didn't happen for the first 100 miles but now same symptoms displaying. Noticed that when put on 4Hi this improved how the brakes felt - maybe this was the placebo effect?!

Not sure if the design of the brakes is geared towards stopping a 2 tonne car effectively depending on what the wheels are doing.

Does anyone know the ratios of power distribution on the 4runner ? e.g. 2HI is it 80% rear and 20% front and then roughly 50% split in 4HI. (currently riding a TEP)

I'll also note that the SR5 (2) that I test drove did not display the spongy brakes..

The brakes are the same no matter which drive mode you engage.
If you have part time 4WD, it is 100% rear in 2HI and 50/50 in 4HI or 4LO.
If you have full time 4WD the power distribution is variable from front to rear in 4WD. If you lock the center diff it becomes 50/50.

 

[msk2u]

Hmmm...

OK, studied this one more and 1engineer is right - the squishyness is till present but seems to "behave" differently in 2HI vs 4HI though I can not quiet characterize it.
Also with respect to 2HI being all rear wheel drive - the manual seems to suggest otherwise -front wheel drive in 2HI. Don't have a ramp unfortunately to test.. Has anyone conducted any tests to see the power distribution matches the above? I'd have thought 80/20 split would be more sensible if it was not front wheel drive?

The brakes are the same no matter which drive mode you engage.
If you have part time 4WD, it is 100% rear in 2HI and 50/50 in 4HI or 4LO.
If you have full time 4WD the power distribution is variable from front to rear in 4WD. If you lock the center diff it becomes 50/50.

 

[shahsmerdis]

My forester was like that, I told subaru to do a brake flush. Fixed the issue. Called up Subaru of america, they sent me a check for the service.

 

[shahsmerdis]

The brakes are the same no matter which drive mode you engage.
If you have part time 4WD, it is 100% rear in 2HI and 50/50 in 4HI or 4LO.
If you have full time 4WD the power distribution is variable from front to rear in 4WD. If you lock the center diff it becomes 50/50.

Brakes are totally seperate. it might feel different but its affect is the same.

edit, tire ratings on oem 5th gens seem like crap on tirerack, are everyone running oem tires?

 

[1engineer]

OK, studied this one more and 1engineer is right - the squishyness is till present but seems to "behave" differently in 2HI vs 4HI though I can not quiet characterize it.
Also with respect to 2HI being all rear wheel drive - the manual seems to suggest otherwise -front wheel drive in 2HI. Don't have a ramp unfortunately to test.. Has anyone conducted any tests to see the power distribution matches the above? I'd have thought 80/20 split would be more sensible if it was not front wheel drive?

Which model do you have? If you have a Limited you are always in 4WD with a torque split until you lock the center diff then it's 50/50. If you have a SR5 or a TE or a TRD Pro it is definitely 2WD with 100% power to the rear wheels until you put it in 4HI. Then it becomes 50/50. There is an article on this in the sticky thread "Are you a new or prospective owner."

This is not even a topic for debate.

 

[BlueRidge77]

*Edit* Created my own thread regarding this comment... http://www.toyota-4runner.org/5th-gen-t4rs/231670-buzzing-vibrating-brake-pedal.html#post2582723

 

[LiveLifeOnWeekend]

Is it the noise or the feeling you don't like? I really doubt anything can be done about it. Someone posted previously that the noise is related to the system that assists in braking in emergency situations. Turn the music up and forget about it.

hahah that's literally what I said to my wife when she pointed out my brakes were squishing!

 

[BlackWorksInc]

just checked the idle with scan tool. in park/neutral 750-775 RPM
in gear 650-675RPM . with AC on slightly higher 50 RPM.

this is 125-175RPM more than the GM vehicles I own so more creeping in gear when stopped . most times GM vehicles 550 RPM..in drive or park idle on GM returns to 550 RPM. toyota idle control not as good as my GM vehicles.

That's an odd statement, hard to really qualify "good or bad" idle control over various engine/drivetrain configurations and software programming.

If the vehicle is maintaining a steady, stable RPM when the computer asks it; I'd say it's doing good idle control. If the computer is programmed to bump up 50rpm when the A/C is on, that's not "bad" or "good" idle control that's just spec; now if it struggled/can't maintain a relatively stable 50rpm increase when commanded that could be an indication of "bad" or "good."

Post Note-

I just saw that's from over a year ago... Damn it.. I'm going to bed.

 

[catrains]

That's an odd statement, hard to really qualify "good or bad" idle control over various engine/drivetrain configurations and software programming.

If the vehicle is maintaining a steady, stable RPM when the computer asks it; I'd say it's doing good idle control. If the computer is programmed to bump up 50rpm when the A/C is on, that's not "bad" or "good" idle control that's just spec; now if it struggled/can't maintain a relatively stable 50rpm increase when commanded that could be an indication of "bad" or "good."

Post Note-

I just saw that's from over a year ago... Damn it.. I'm going to bed.

I am no vehicle design engineer but if the brake pedal is on and the vehicle is stopped the PCM should not screw with the engine idle because the ac compressor kicks in.

many have had this sudden vehicle movement in traffic brakes on ..
so if you have NON toyota vehicles also , this is an issue.. with all your vehicles toyota or just this one then you automatically use a heavy foot on the brake ...this summer it happened again a few times to me ...

vehicle creep ..

 

[weezykid]

So I was going to start a new thread, but found this one. Sorry for reviving an old thread.

I have an '18 Off-Road (9800 miles) and the pedal makes the squish sound. Haven't noticed it much, but a friend of mine does when she rides with me.

The concern I had is that my pedal will feel squishy at times. Some traffic lights if I apply a little more pressure, I can make it go to the floor. After doing this the pedal will feel fairly stiff for a while (few weeks maybe) and then start feeling squishy again. The Service Writer said their master tech looked it over and found no issues stating it is the way the "hydraulic assist" works.

 

[SkidPalace]

So I was going to start a new thread, but found this one. Sorry for reviving an old thread.

I have an '18 Off-Road (9800 miles) and the pedal makes the squish sound. Haven't noticed it much, but a friend of mine does when she rides with me.

The concern I had is that my pedal will feel squishy at times. Some traffic lights if I apply a little more pressure, I can make it go to the floor. After doing this the pedal will feel fairly stiff for a while (few weeks maybe) and then start feeling squishy again. The Service Writer said their master tech looked it over and found no issues stating it is the way the "hydraulic assist" works.

Absolutely NOT OK. A brake pedal going to the floor is a potentially fatal issue. You need to elevate this with your dealer. You need to be clear you are not talking about the whoosh sound at a the front o f the pedal press, but a pedal going to the floor. It should not do that ever, unless you are bleeding the brakes.

 

[mteolus]

Absolutely NOT OK. A brake pedal going to the floor is a potentially fatal issue. You need to elevate this with your dealer. You need to be clear you are not talking about the whoosh sound at a the front o f the pedal press, but a pedal going to the floor. It should not do that ever, unless you are bleeding the brakes.

+1. You either have a brake line leak or a faulty master cylinder. Scotty Kilmer video on sinking breaks

 

[cbreze]

So I was going to start a new thread, but found this one. Sorry for reviving an old thread.

I have an '18 Off-Road (9800 miles) and the pedal makes the squish sound. Haven't noticed it much, but a friend of mine does when she rides with me.

The concern I had is that my pedal will feel squishy at times. Some traffic lights if I apply a little more pressure, I can make it go to the floor. After doing this the pedal will feel fairly stiff for a while (few weeks maybe) and then start feeling squishy again. The Service Writer said their master tech looked it over and found no issues stating it is the way the "hydraulic assist" works.

If it actually touches the floor then something is definitely wrong and needs immediate attention. My pedal is “squishy” but I’ve grown so used to it I don’t notice it and find my brakes are really quite excellent. I had a panic stop at 65 mph once and was quite impressed as to how fast and straight I was able to come to a complete stop and no tire squeal. If I jammed my foot down as hard as I could I suppose I may get the pedal closer to the floor but doubtful it would touch. In a worse case scenario I would not see a need to push that hard.

 

[85GT-79FJ40]

I don't notice it as much on mine now after switching to Brembo pads. Far better pedal feel and less pedal travel too. I mean it still makes the sound but it stops actually stopping before I hear it. I can't say the truck actually stops better but it sure feels better.

 

[weezykid]

Absolutely NOT OK. A brake pedal going to the floor is a potentially fatal issue. You need to elevate this with your dealer. You need to be clear you are not talking about the whoosh sound at a the front o f the pedal press, but a pedal going to the floor. It should not do that ever, unless you are bleeding the brakes.

I tried the multi quote function, but it doesnt seem to be working for me.

Well after dealing with Toyota and going back the a different dealer, they still say nothing is wrong at it is working as it should. Yet at a stop light I can still get the pedal to the floor with extra force. Between this and my jacked up oil change on the last service, as well as my 2018 Tacoma issues, I am really loosing faith in Toyota service and quality.