Squealing/Chirp noise while in gear manual scat pack - Dodge Challenger Forum: Challenger & SRT8 Forums
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post #1 of 10 (permalink) Old 04-24-2019, 09:54 PM Thread Starter
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Squealing/Chirp noise while in gear manual scat pack

First off sorry if this has been addressed, couldn't find it. So I have a '19 manual scat pack that I've only had for two months, now 1580 miles on the clock. Tonight I took it out for a 20 min drive and I noticed a squealing chrip noise coming from the front end while I'm in 2nd or 3rd gear and I take my foot of the gas and coast. It goes away if I step on the brakes, or if I accelerate. It also seems to go away if I turn left but amplify if I turn right. Ive only noticed it in 2nd and 3rd gear while coasting. At first I thought it was brake dust/dirt build up on the rotors because that's what it sounds like, but I'm not hearing it in first gear... For reference I have the 6 piston brembos up front.

Anyone else have this problem before? I'm going to give it a wash tomorrow to for sure eliminate the brake dust theory but other than that I'm at a loss of what it could be. Any advice is appreciated!
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post #2 of 10 (permalink) Old 04-25-2019, 12:05 AM
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Random thought.. Check that your lug nuts are tight. Also try bedding your pads to ensure they are not causing the issue.

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post #3 of 10 (permalink) Old 04-25-2019, 12:36 AM
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Normally I am all for DIY but it is a 2019 and still under manufacturer's warranty...let the dealership diagnose and fix.


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post #4 of 10 (permalink) Old 04-27-2019, 03:14 PM Thread Starter
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Update: I took it out and gave all 4 rotors a high pressure wash, got a lot of gunk out but the noise has become louder. Before I couldn't notice it while having my window open, now it's very noticable from outside. I checked my lugs, not the issue. Again it's only in 2nd and 3rd gear while coasting and turning right or left. The noise immediately disappears under any brake or throttle application. I gave it a good visual inspection and didn't see anything. I'm at a loss, going to take it in to the dealership this next week asap and see if they can figure it out.
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post #5 of 10 (permalink) Old 04-28-2019, 04:15 PM
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I have mentioned this before to another member complaining of squealing brakes...do you happen to have hill start assist activated, if so if you turn it off do you notice a difference?
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post #6 of 10 (permalink) Old 05-23-2019, 10:59 PM Thread Starter
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I have mentioned this before to another member complaining of squealing brakes...do you happen to have hill start assist activated, if so if you turn it off do you notice a difference?
Didn't notice a difference. The majority of the squealing goes away if I high pressure wash the rotors from the outside and underneath the car so I'm assuming it's just brake dust.
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post #7 of 10 (permalink) Old 05-24-2019, 08:51 AM
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Didn't notice a difference. The majority of the squealing goes away if I high pressure wash the rotors from the outside and underneath the car so I'm assuming it's just brake dust.

Do any rotor surfaces show any signs of abnormal wear? Like a groove or a streak?


Absent any signs of problems at the rotors, the problem reads like a brake piston is hanging up and a pad or part of a pad is in light contact with the rotor.


While washing the brake hardware can eliminate the noise a build up of brake dust on the piston boots causes it can't help a sticky/binding brake piston.


You probably need the car checked out by a tech. Be sure you can describe to him how to reproduce the noise or arrange to drive the car and demo the noise to the tech.
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post #8 of 10 (permalink) Old 05-24-2019, 09:23 AM
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6 piston brembos are serious brakes. My buddy who works as a BMW lead tech always tells me how drivers of M cars always come in complaining about brake squeal even though some of these cars are fresh off the lot!

His fix? 3 hard stops from 60mph until you can see the brakes smoking or you can smell them, park the car and let then air out or take a cool down lap, and by re-bedding the surface the noise usually goes away.


Not saying this is 100% your issue but its something easy to try
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post #9 of 10 (permalink) Old 05-24-2019, 09:54 AM Thread Starter
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6 piston brembos are serious brakes. My buddy who works as a BMW lead tech always tells me how drivers of M cars always come in complaining about brake squeal even though some of these cars are fresh off the lot!

His fix? 3 hard stops from 60mph until you can see the brakes smoking or you can smell them, park the car and let then air out or take a cool down lap, and by re-bedding the surface the noise usually goes away.


Not saying this is 100% your issue but its something easy to try
I'll have to try that. I just took a 1400 Mile road trip and didn't hear it much at all. I've only been noticing it now around town. If the braking from 60 doesn't work I'll get it checked by a tech.
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post #10 of 10 (permalink) Old 05-25-2019, 01:17 AM
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Make sure to drive for a while without using the brakes when they are hot

https://brakeperformance.com/bedding-in-rotors.php

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