The unpleasant squeaking sound that occurs every time you press the brakes. Simply spraying on anti-squeal spray or filing down the edges of the brake pads won't solve the problem fundamentally. This video fully demonstrates professional cleaning procedures and the proper selection of grease for each application, using actual pit work, to effectively stop the "resonance of parts" that is the source of the noise.

Brake squeal, especially common in hybrid vehicles (such as the Prius), occurs when light braking force causes parts to resonate with each other, and this minute vibration is amplified throughout the entire suspension system.

The internet is full of information suggesting that "filing down the edges of the pads will fix it" or "applying plenty of grease will solve it," but these are only temporary fixes, and in some cases, old grease or shavings can even become a breeding ground for new noises.

This video thoroughly explains a maintenance process based on physical principles, including thorough cleaning of the pad surface, checking for seized slide pins and applying the appropriate amount of lubrication, and replacing retainer fittings that have lost their holding power. Furthermore, we'll reveal real-world item selection techniques, including the meticulous use of "high-viscosity silicone grease" and "copper-infused pad grease" to suppress the unique squeaking of hybrid vehicles, and even the use of rubber shim sheets as a last resort.

[Professional Prescription: On the "Appropriate Amount" of Brake Grease]
More grease isn't always better. Excessive application, especially around the brakes, can trap dust and gravel during driving, critically hindering caliper movement. The golden rule in the professional field is to apply a thin, even layer using a dedicated brush to areas that act as fulcrums for vibration, such as the "ears" where metal parts contact.

Whether to repair, buy, or give up on your car—this channel, brought to you by Obayashi Motors, takes on that decision-making process from a practical, on-the-ground perspective. Please subscribe to our channel to gain real-world knowledge for a smart and long-lasting relationship with your beloved car.

0:00 Opening: Unpleasant brake noises that frequently occur during the rainy season
01:47 The physical basis of brake squeal (friction and resonance mechanism)
03:20 Structural reasons why "squeaking" is more frequent in hybrid vehicles
04:44 The fact that simply chamfering (grinding) the pads does not provide a fundamental solution
05:25 The negative effects caused by surface debris and unnecessary spray
07:15 Professional practice ①: The correct cleaning procedure for the pad surface
08:25 Professional practice ②: Checking for slide pin seizure and proper lubrication
09:55 Professional practice ③: Meticulous application of special grease to stop resonance
12:00 Replacing deteriorated retainer fittings and how to utilize shim sheets
14:48 Final test: Why you should check when the brakes are completely cold first thing in the morning
16:35 Summary: Repairing from the physical structure, not just blindly replacing parts
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Cast: Ryosuke
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