Brakes Squeal

ultane · May 21, 2025

EOD Guy said:
I'm thinking there is a slight misalignment in the caliper mounting surfaces and the piston face, which would cant the pad ever so slightly (slightly larger space at the front edge of the pads vs the rear edge of the pads) which is why going forward no squeal and reverse crazy squeal. As you apply the brakes, over a period of time, the rear of the pad makes contact first and that would increase the space etc...... and when you reverse that sharp edge of the rear of the pads scrapes the rotor etc...... New pads, if properly bedded, erases that gap for a period of time.

Might be why Toyota is slow on a TSB as it would require machining of the calipers or mounting surfaces. Just my opinion tho'

I read somewhere that the reason for the delay is that there is a supply chain issue with one of the parts needed. But I could be wrong.

RuSure · Tuesday at 3:26 PM

Mine sequels several times per day, has anyone got the TSB number they could share? I am getting the fist TC service done this week and wanna make sure its well notated at the dealer

EOD Guy · Tuesday at 3:34 PM

RuSure said:
Mine sequels several times per day, has anyone got the TSB number they could share? I am getting the fist TC service done this week and wanna make sure its well notated at the dealer

I'm not aware that a TSB was issued for the LC yet.........

sailcalifornia · Tuesday at 10:14 PM

had been having non-stop squeal since i got my truck. Over the weekend did a pretty aggressive offroad day that ending with a very steep 10 mile decent. I used the DAC the whole way keeping the speeds around 5-7 miles per hours. Total smoked the breaks, smelled them burning and peddle really needed to step on it to come to complete stop. I should have been in 4 lo. On the bring side, the brakes have not made any reverse squeal since....

ultane · Tuesday at 11:12 PM

sailcalifornia said:
had been having non-stop squeal since i got my truck. Over the weekend did a pretty aggressive offroad day that ending with a very steep 10 mile decent. I used the DAC the whole way keeping the speeds around 5-7 miles per hours. Total smoked the breaks, smelled them burning and peddle really needed to step on it to come to complete stop. I should have been in 4 lo. On the bring side, the brakes have not made any reverse squeal since....

I had a similar descent down a steep Georgia mountain, where Miss Daisy’s brakes were smokin’ hot. The squeeling went away. I was going to write a post about how to fix the brake squeal, but about a week later, the squealing returned.

JCAV · Wednesday at 8:37 AM

Gonna start calling them Toyoyo because of the back and forth to the dealership. Hopefully they will realize and fix this problem before it becomes a more serious. It not, people won’t buy the LC.

Pavman2473 · Wednesday at 9:40 AM

bgeorger said:
Does anyone else exerience brakes squeel in reverse? Mine seems to do it mostly after it has sat for a while. I only notice it in reverse.

Everyone. Here’s mine.

brian254 · Wednesday at 10:59 AM

Pavman2473 said:
Everyone. Here’s mine.

Wow - that's terrible. My 2025 LC has a little over 900 miles on it and I've not experienced any brake squeaking.

JCAV · Wednesday at 6:02 PM

Yeah, just wait B254. You don’t have enough miles on the truck yet I am on the fence getting one now b/c of so many issues with the LC. GX OT not much better with the hood vibrations and the seat heater/cooler not working properly along with some complaints about the brakes making noise like the one I just heard. Obviously it’s the stock brakes coming from Japan and I heard a lot of components are made in China.