2010 braking issues??

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Pericles

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Hi all new poster here. I recently found a 2010 4runner with around 18k miles on it. I test drove a few 2011's and was decently impressed. So upon driving the 2010 around I'm noticing a few things that weren't apparent in the 2011's I drove or any OTHER vehicles. Sometimes sitting at a stoplight with the brake pedal completely engaged it will roll forward anyway( happened to me and 3 other people who drove the vehicle). It's as if the transmission is overpowering the brake system. In general the brakes require a TON more pressure than the 2011 or any other vehicle to slow it down. Basically I feel like I have to stomp all the way down and use a lot of pressure. I have been back to the dealership twice and have been told that its normal and there is nothing wrong with the brake system. In the meantime I have been driving a friends 2008 4runner sport which seems to be a night and day difference in handling and stopping. Has anyone on here ran into the issues I speak of? Any ideas?

Thanks
 
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I have a 2011 and what you are describing are just characteristics of our braking system. In other words- it's normal.

A lot of times while sitting at a red light, if the A/C compressor cycles on, the resulting increase in engine RPM will cause the truck to start to roll forward. Almost caused me to rear-end a few people this summer...

The brakes are very powerful. In a panic situation they work to stop the truck straight and fast! They are plenty powerful for towing as well.

You just have to get used to them!
 
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Pericles said:
Hi all new poster here. I recently found a 2010 4runner with around 18k miles on it. I test drove a few 2011's and was decently impressed. So upon driving the 2010 around I'm noticing a few things that weren't apparent in the 2011's I drove or any OTHER vehicles. Sometimes sitting at a stoplight with the brake pedal completely engaged it will roll forward anyway( happened to me and 3 other people who drove the vehicle). It's as if the transmission is overpowering the brake system. In general the brakes require a TON more pressure than the 2011 or any other vehicle to slow it down. Basically I feel like I have to stomp all the way down and use a lot of pressure. I have been back to the dealership twice and have been told that its normal and there is nothing wrong with the brake system. In the meantime I have been driving a friends 2008 4runner sport which seems to be a night and day difference in handling and stopping. Has anyone on here ran into the issues I speak of? Any ideas?

Thanks
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Search is your friend! There are multiple threads regarding this exact issue. Bottom line, seems this is normal, albeit very annoying if not unsafe. As to handling, search this also. If you still have OEM tires, you will not be happy. New tires will make a world of difference. Get light Truck tires vs. the passenger car OEM tires. Also, new shocks will amaze! Check it out, you will not be sorry. Be safe.
 
Yes i have the same issue and dealer said same thing. Even went as far as to say have I tried scooting seat up. Regardless no solution other than more of us complaining and hopping issue get's resolved.
 
Interesting.... I drove a brand new SR5 the other day and the brake pedal was overly sensitive. Required no effort at all to stop, or keep it at a stand still WITH the A/C on. It sounds like a brake booster issue (I'm an ASE mechanic, dealt with issues like this on cars before) and maybe Toyota addressed the issue and redesigned the booster or the vacuum line leading to it?

Pretty much the brakes are "boosted" (doubles, even triples the effort you apply) by the brake booster by using the intake vacuum from the engine. If you look where the master cylinder is, there's a large "drum" behind it that is connected to. From there, there is a rubber hose that connects somewhere to the intake manifold. Inside the booster is a diaphragm that gets sucked on by the intake pressure and helps boost your braking effort.

In any car if there's a leak at that connection, or the hose falls off you will have a very hard time stoping the vehicle or keeping it still at a stop (in an automatic regarding a standstill).
 
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TX7.62MM said:
Interesting.... I drove a brand new SR5 the other day and the brake pedal was overly sensitive. Required no effort at all to stop, or keep it at a stand still WITH the A/C on. It sounds like a brake booster issue (I'm an ASE mechanic, dealt with issues like this on cars before) and maybe Toyota addressed the issue and redesigned the booster or the vacuum line leading to it?

Pretty much the brakes are "boosted" (doubles, even triples the effort you apply) by the brake booster by using the intake vacuum from the engine. If you look where the master cylinder is, there's a large "drum" behind it that is connected to. From there, there is a rubber hose that connects somewhere to the intake manifold. Inside the booster is a diaphragm that gets sucked on by the intake pressure and helps boost your braking effort.

In any car if there's a leak at that connection, or the hose falls off you will have a very hard time stoping the vehicle or keeping it still at a stop (in an automatic regarding a standstill).
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Do a search and you will see if you have brakes that engage near the top of the pedal travel you are in the minority. My 2011 is like Antmans and most everyone else. Good brakes but have to get used to them.
 
I wasn't really very happy with mine at first but not as dramatic as your description. I guess I'm used to it now because I think about it while waiting at a light (not much else to do) and do not think I need to apply excess pressure to keep from rolling. I do like to shift to N when the RPMs are up, usually when cold but that's more for relieving the strain on the trans.
 
Any Toyota techs on here? It sounds like there possibly could be an adjustment for brake pedal travel prior to engagement.
 
The breaks seem to differ in amount of travel before engagement, and "touchiness" between vehicles. I have two 2011's. The SR5's breaks are a lot "touchier" than the Trails. Both have good breaks and both will stop when you want/need. But, the Trails are lacking the extreme touchiness that the SR5 has. This is neither a good or bad thing IMO.

ETA: I just thought about this...but, I wonder if the difference in feel between the SR5 and Trail is due to a different master cylinder or associated hardware?? The SR5 doesn't have near the amount of gadgets that the Trail has. And, the trail does lean on the anti-lock system a lot more than an SR5 (crawl control, terrain control....)
 
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My feet are just fatter than everyone else's. No problem here with stepping on the brake pedal "hard" enough that my transmission overpowers the brakes.
 
Are any of you disappointed with the fact you paid X amount of dollars with these issues? Why has Toyota not addressed this? I have never had a vehicle do this before.
 
gwcpa said:
Feels like I'm getting bumped from behind sometimes. I actually looked up at the mirror today.
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Oh man, read up on the Lexus GX 470s "Clunk Fix". I had to had the driveshaft replaced in my 2005 due to this problem. It was a warranty repair, but I had no idea it might carry over to our 5th Gen 4Rs.

Felt exactly as you describe...

This was different from the wanting to inch forward when stopped. My GX did that both before and after the driveshaft replacement.
 
Pericles said:
Test drive was only one stop light and around the block.
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Some dealerships will let you have a 'extended' test drive, letting you hold onto the vehicle for a couple of hours if you present yourself as a serious buyer.


Antman said:
A lot of times while sitting at a red light, if the A/C compressor cycles on, the resulting increase in engine RPM will cause the truck to start to roll forward. Almost caused me to rear-end a few people this summer...
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Had the same exact problem in my previous dead but not forgotten 1991 Corolla too, sheesh seems like Toyota keeps "moving forward" with these same nitpick issues. I actually don't have the A/C compressor moving the car forward issue on my 2010 4R if I hold the brake down hard enough.

Note to Flamers (:flamethrwoer2:): I'm not hating on Toyota's; Check Sig.
 
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