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Discussion Starter · #1 ·
I had my front brakes replaced (rotors and pads) shortly after purchase as the rotors were “warped.” I’ve seen many threads on here discussing the squeaking, so I apologize for adding another one. After I got new brakes I have bedded them twice, and they still squeak at low speeds when coming to a stop. Sounds like I’m driving around in a sh!tbox and drives me nuts. Is there any solution to this besides going aftermarket? I didn’t notice this on loaner Volvo’s I’ve driven recently, though they were not XC90s. Thanks for any insight.
 

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You could always take it back to the dealer. Personally, I would go there first have it looked at, and if not resolved I would pull the pads and apply some copper grease to the back side where the caliper rests. I would go aftermarket as a last resort.
 

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I had the same squeaking brake problem with my 2019 XC90. At 6000 miles, I took it into the dealer. They changed pads/rotors under warranty. A week after I got the car back, the squeaking noise came back so I went back to the dealer. They now have had my car for 10 days while they try to figure out the problem with Volvo USA. I took videos of my car making the sound and they have sent them to Volvo. Dealer put me in an Escalade loaner so I don't really mind how long they need to keep my car.
 

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My 2019 XC90 T8 has been serviced for the brakes squeaking twice. Just had the 10K service done and they are squeaking again when I back up.. I just have not had them come pick it up.
 

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Discussion Starter · #5 ·
So I was driving the car a couple days ago and decided for the hell of it to put it in dynamic mode. I noticed that the brake squeal almost completely went away. So I decided to set the individual drive mode to dynamic braking (air suspension too stiff and throttle response too artificial in dynamic mode for my taste) and sure enough 99% brake squeak is gone. WTF?! Any thoughts or experiences with this? Brake pedal feel overall feels better too, less squishy and more responsive. Weird.
 

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So I was driving the car a couple days ago and decided for the hell of it to put it in dynamic mode. I noticed that the brake squeal almost completely went away. So I decided to set the individual drive mode to dynamic braking (air suspension too stiff and throttle response too artificial in dynamic mode for my taste) and sure enough 99% brake squeak is gone. WTF?! Any thoughts or experiences with this? Brake pedal feel overall feels better too, less squishy and more responsive. Weird.
Yeah, you drove the car like it was supposed to be driven.

I'm convinced that 99% of the "brake squeal" issues would disappear if people would properly bed their brakes. It involved repeatedly braking HARD and then allowing them to cool down. For those who don't want to bother just try to "drive it like you stole it" for a week and stop pampering it.

Procedures
https://www.autoaccessoriesgarage.com/Brakes/How-To-Bed-In-Your-Brakes
https://brakeperformance.com/bedding-in-rotors.php
 

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For what it is worth. I changed my rotors to cross drilled and slotted and replaced the pads with aftermarket. I never experienced any squeal before. I now get it, but only when backing up. Never when going forward. I suspect that I need to apply some adhesive to the back of the outboard shoe in the fronts. When I replaced the pads originally the outer shoe was glued tightly to the caliper. I will give that a shot and advise as to whether or not that improves the squeal. I would agree that bedding the brakes is an effective way to insure good braking.
 

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Discussion Starter · #8 ·
Yeah, you drove the car like it was supposed to be driven.

I'm convinced that 99% of the "brake squeal" issues would disappear if people would properly bed their brakes. It involved repeatedly braking HARD and then allowing them to cool down. For those who don't want to bother just try to "drive it like you stole it" for a week and stop pampering it.

Procedures
https://www.autoaccessoriesgarage.com/Brakes/How-To-Bed-In-Your-Brakes
https://brakeperformance.com/bedding-in-rotors.php[/QUOTE]

So I apologize if I wasn't clear, but when I put it in dynamic mode I didn't start to "drive it like I stole it." I was just driving through the city, stopping at many red lights, and the squeal mostly just instantly disappeared. Could have also been a coincidence I guess...
 

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Sounds easy enough to do I may try it. Will I need to take the wheels off to get the inside of the rotors you think? How did you apply it? Thanks for the tip btw, much appreciated
Depends on what kind of wheels you have. I made a swab stick by wrapping a blue shop shop towel on the end of my wheel woolie, dipped this in the bowl of solution paste I mixed up, then stuck it through the spokes and and smeared the front side of each rotor.
For inner rotor surface, I slid under the truck.
Next I moved the truck forward about a foot and smeared the surface that was previously covered by the caliper in the first application.

You may need to repeat this process two full times to see results. I saw some change after the first drive. I did a second application afterward and this cured the problem.
 

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Discussion Starter · #13 ·
I have the 20” with plenty of room between the spokes (the standard inscription wheels I guess) so I think your method will work nicely. I’ll give it a shot!
 

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I have the 20" with plenty of room between the spokes (the standard inscription wheels I guess) so I think your method will work nicely. I'll give it a shot!
Yep. Try it. Worse comes to worse, and it doesn't work for you - you're only out $6 between the paste and towels.
 

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Discussion Starter · #16 ·
I have the 20" with plenty of room between the spokes (the standard inscription wheels I guess) so I think your method will work nicely. I'll give it a shot!
Have you tried it and what was the result? Thanks.
I haven't had a chance yet, been slammed at work. I'm hoping to try it over the Thanksgiving break. Will report back with results.
 

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Well I finally got around to removing my front wheels as I wanted to apply this new Ceramic Hybrid Spray I recently got my hands on. So with the wheels off I decided to pull the shoes and coated the inside with an adhesive/insulator material. The original inside shoes were stuck to the caliper. I put everything back to gether and immediately noticed a reduction in the sound as I back up. So it would suggest that the shoes perhaps resonate while I am backing up. I have not had an issue with forward noise. I am sure that the slotted rotors I have keep the shoes clean. So for what it is worth. By the way using a paste on the rotors essentially cleans them off during braking. I would venture the same issue of noise will come up again when the effects wear off.
 

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2019 XC90 Brake Noise

I brought my wife's XC90 for the 30K maintenance and asked them to check the brake noise. This is the second time that the team has replaced the all 4 rotors and pads. The first time took care of the noise for about 6K miles. This time they have replaced all 4 rotors and pads again, but unable to stop the noise. It's odd that my 2017 V90XC has had no brake issues at all.
 
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