Breakpads disappeared - callipers gone

H

hkazmi

New member
I have a 2010 4runner I bought new,

6 months ago, when the car was at 50000 miles (80000km) Toyota finally tells me i need new break pads, it was a good 50k run so I got them.

Past week, another 25000 miles, on my way back from a trip, I hear grinding noise on the highway while breaking, nothing really seems wrong, 200 miles later, lots of warning lights go off from Anti-slip to abs, I can't recall as the break paddle just fell in before recovering to stop the car. I was in a bit of a panic.

Lo and behold, the rear passenger side calipers have completely grinded against the rotors, killing themselves and the rotors. So what happened to the break pads, they fell off or done in 25k when the original lasted 50k. Did totoyota not put OEM break pads the second time. I wasn't even expecting this second set of pads to wear of in half the time.

I am just surprized what happened here.

Anyone else had similar faliure?
 
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There was a Toyota service bulletin about a batch of suicidal brake pads that accidentally got shipped to Ontario dealers at the same time as the sticking accelerator pedal that caused so many 4Runners to also kill themselves. The techs were notified to pull all those pads that looked depressed. Your brake pads must have been overlooked.
 
dekeman said:
There was a Toyota service bulletin about a batch of suicidal brake pads that accidentally got shipped to Ontario dealers at the same time as the sticking accelerator pedal that caused so many 4Runners to also kill themselves. The techs were notified to pull all those pads that looked depressed. Your brake pads must have been overlooked.
Click to expand...

I want to marry you and bear your children...
 
dekeman said:
There was a Toyota service bulletin about a batch of suicidal brake pads that accidentally got shipped to Ontario dealers at the same time as the sticking accelerator pedal that caused so many 4Runners to also kill themselves. The techs were notified to pull all those pads that looked depressed. Your brake pads must have been overlooked.
Click to expand...

fixed.

I'm available Pat.
 
Them brake pads broke real bad because the peddler was nothing more than a pied piper who soft-peddled his wares while pedalling his bike.
 
dekeman said:
Them brake pads broke real bad because the peddler was nothing more than a pied piper who soft-peddled his wares while pedalling his bike.
Click to expand...

Apparently I need you Canadians to translate this thread into English because I have no idea what any of you are talking about. :ybrick:
 
hkazmi said:
I have a 2010 4runner I bought new,

6 months ago, when the car was at 50000 miles (80000km) Toyota finally tells me i need new break pads, it was a good 50k run so I got them.

Past week, another 25000 miles, on my way back from a trip, I hear grinding noise on the highway while breaking, nothing really seems wrong, 200 miles later, lots of warning lights go off from Anti-slip to abs, I can't recall as the break paddle just fell in before recovering to stop the car. I was in a bit of a panic.

Lo and behold, the rear passenger side calipers have completely grinded against the rotors, killing themselves and the rotors. So what happened to the break pads, they fell off or done in 25k when the original lasted 50k. Did totoyota not put OEM break pads the second time. I wasn't even expecting this second set of pads to wear of in half the time.

I am just surprized what happened here.

Anyone else had similar faliure?
Click to expand...
i have seen this more than a few times, with OLD worn pads. eventually they get so thin, they will fit between the bracket and rotor, then just fall out.
the next push of the pedal sends the piston out, if there is room, it will hit the rotor. if there isn't enough room, it just pops out and you lose all brakes.
 
dekeman said:
Them brake pads broke real bad because the peddler was nothing more than a pied piper who soft-peddled his wares while pedalling his bike.
Click to expand...

so much win, here. :tea:


to the OP:
There's no way what you're describing happened without giving you some warning. This is the type of thing that happens when you ignore your truck's maintenance. Hopefully lesson learned.
 
If the rotors had not been serviced in that period, it's possible that grooving or pitting may have worn the pads down on one.

Another possibility is a stuck caliper (A known issue on some 4runners) wore the pads down really quickly.
 
nevada said:
i have seen this more than a few times, with OLD worn pads. eventually they get so thin, they will fit between the bracket and rotor, then just fall out.
the next push of the pedal sends the piston out, if there is room, it will hit the rotor. if there isn't enough room, it just pops out and you lose all brakes.
Click to expand...

2014 Warthog said:
If the rotors had not been serviced in that period, it's possible that grooving or pitting may have worn the pads down on one.

Another possibility is a stuck caliper (A known issue on some 4runners) wore the pads down really quickly.
Click to expand...

Stand down guys....

we done been trolled...
 
It sounds like the "break" pads were just taking a break from braking. Once they are finished with their break they should work just fine.
 
Update

So $1000 and a rebuilt caliper later, the mechanic basically says 4runner's break system is designed for roughing it out, say across a desert, with that comes regular maintenance. If you skimp out on brake service regularly, you in it for s**t; like I was.

He basically says if you want lesser maintenance, go for a highlander or something smaller, for urban driving we are really driving a overkill. It has similar break system as a dump truck, not needed for city driving.

What do you guys think, is that feedback worth it. Also is it worth it to actually go and get a smaller vehicle. I love my 4runner, few years back in a rather heavy snow (2ft or so), I was essentially pillaging the highway for other vehicles following behind me. Fell in love with the behemoth that day.
 
hkazmi said:
So $1000 and a rebuilt caliper later, the mechanic basically says 4runner's break system is designed for roughing it out, say across a desert, with that comes regular maintenance. If you skimp out on brake service regularly, you in it for s**t; like I was.

He basically says if you want lesser maintenance, go for a highlander or something smaller, for urban driving we are really driving a overkill. It has similar break system as a dump truck, not needed for city driving.

What do you guys think, is that feedback worth it. Also is it worth it to actually go and get a smaller vehicle. I love my 4runner, few years back in a rather heavy snow (2ft or so), I was essentially pillaging the highway for other vehicles following behind me. Fell in love with the behemoth that day.
Click to expand...

You should go 70K or so with OEM stuff. When you take it in every 10K for an oil change make sure you tell them to check the brakes. They will. It requires no more or less brake maintenance than any other vehicle.
 
The best and most reliable vehicle that needs no brake service is...
There you go. You should trade you 4Runner with "dump truck" brakes for this:

nn-094_1z.jpg
 
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