Car shutter when braking.

BadCat

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Yall experience a bit of shutter when braking hard at all?

Didn't know if yall had the issue?

 
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BadCat

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You mean the engine decel, or like a suspension like shake?

The engine definitely aggressively downshifts, which is almost a "shutter"
Definitely braking. Not on the decel. And not all the time. Almost like auto braking system is pulsating a tiny bit.
 

obito

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I haven’t had this issue but is your front collision thing braking for you? I turned that off
 

SpeedRacer

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Have you tracked your car, are you aggressive on the brakes, do you live in a hilly area?

Could be warped rotors. It would feel like a pulsation through the brake pedal and sometimes through the steering wheel. I haven’t run into that with the Supra but it’s been an issue for us with several other cars (we live in the Texas Hill Country and it’s hard on brakes). A good shop can diagnose it quickly.
 
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BadCat

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I haven’t had this issue but is your front collision thing braking for you? I turned that off
No its only when I press the brake
 
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BadCat

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Have you tracked your car, are you aggressive on the brakes, do you live in a hilly area?

Could be warped rotors. It would feel like a pulsation through the brake pedal and sometimes through the steering wheel. I haven’t run into that with the Supra but it’s been an issue for us with several other cars (we live in the Texas Hill Country and it’s hard on brakes). A good shop can diagnose it quickly.
This is likely the issues now that I think about it. I'll check the rotors. Car only has 3k ont it....
 
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BadCat

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Following up on the actual issue. Took the car to Toyota, turns out lower a arm bolts were loose... caused the rattling and shaking when braking. Toyota said they weren't charging me for tightening them up as if they had done me a true solid...

Lived to drive another day.
 

MYNEWFAST

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Following up on the actual issue. Took the car to Toyota, turns out lower a arm bolts were loose... caused the rattling and shaking when braking. Toyota said they weren't charging me for tightening them up as if they had done me a true solid...

Lived to drive another day.
Good that it's been sorted.
I was going to say that warped rotors normally only pulsate the brake pedal.
 

SpeedRacer

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Following up on the actual issue. Took the car to Toyota, turns out lower a arm bolts were loose... caused the rattling and shaking when braking. Toyota said they weren't charging me for tightening them up as if they had done me a true solid...

Lived to drive another day.
How do those come loose?! Did you mod the suspension?

If I was Toyota and suspension bolts were loose on an unmodified car, I’d tighten them with locktite and go back to look for other examples of that occurring.
 

 
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