TSB For Brake Squeal: L-SB-0001-20
03-23-20, 10:46 AM
#136
Driver School Candidate
Are the new brake pads necessary to remove squeal? I had just replaced the pads 500miles ago with Advics and was wondering if the Lexus (04945-30340) Anti-Squeal Shim Kit would be enough to remove the squealing of my brakes. If not I guess I'll just take my loss on the fairly new pads and purchase the Pads Set 04465-30540 .
03-26-20, 04:53 AM
#137
Intermediate
Thread Starter
I purchased a used 2016 GS F Sport. It came with OEM 2-piece. No squealing with the OEM setup. The pads were about to go so I bought the Centric basic/commuter rotors and pads (semi-metallic). This is because I don't drive aggressively or track. Squealed after a few days. I tried different greases and shims, even the Lexus shims with the rubberized lining. Was good for another few days. I must've worked on my brakes at least 7 times trying to figure out the squealing. Finally decided to change to Akebonos with the Centric rotors. Still squealed. Put the 2-piece OEMs (unturned/didn't resurface) back on with Akebonos. No squeal. Been two weeks. It was the rotors!
Now I'm using OEM rotors with OEM pads, and no squeal.
03-26-20, 04:57 AM
#138
Intermediate
Thread Starter
Are the new brake pads necessary to remove squeal? I had just replaced the pads 500miles ago with Advics and was wondering if the Lexus (04945-30340) Anti-Squeal Shim Kit would be enough to remove the squealing of my brakes. If not I guess I'll just take my loss on the fairly new pads and purchase the Pads Set 04465-30540 .
You'll probably end up getting your brakes worked on 2-3 times before you find a combination that works for you. I did my brakes 4 times.
03-26-20, 08:00 AM
#139
Driver School Candidate
Join Date: Jan 2020
Location: CA
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How is this doing now? Akebonos were squealing like mad for me on OEM rotors. Took them a couple of weeks to start, but once they started squealing it was unbearable. Note, we put about 400-500 miles a week on our GS.
Now I'm using OEM rotors with OEM pads, and no squeal.
Now I'm using OEM rotors with OEM pads, and no squeal.
I do LOVE that there is virtually no brake dust from the Ceramic Akebonos. The Semi-metallics did brake better with initial bite. I only commute so I'm fine with the smoother braking of the Akebonos. It's still really good due to the big *** 14-inch rotors. No complaints at all with this setup.
03-26-20, 09:13 AM
#140
Intermediate
Thread Starter
Still no noise. I didn't even grease the back of the pads! It's been about a month now. I don't get it either. I thought it was my Centric rotors being glazed up by breaking in my Centric pads.
I do LOVE that there is virtually no brake dust from the Ceramic Akebonos. The Semi-metallics did brake better with initial bite. I only commute so I'm fine with the smoother braking of the Akebonos. It's still really good due to the big *** 14-inch rotors. No complaints at all with this setup.
I do LOVE that there is virtually no brake dust from the Ceramic Akebonos. The Semi-metallics did brake better with initial bite. I only commute so I'm fine with the smoother braking of the Akebonos. It's still really good due to the big *** 14-inch rotors. No complaints at all with this setup.
03-26-20, 10:56 AM
#141
Driver School Candidate
What rotors are you using, OEM or aftermarket? It seems like this is a dice toss. People are seeing a little bit of varying results with different set ups. Some say OEM is the fix. In my case, OEM was the key to getting rid of the squeal. Some say they're running OEM rotors + Akebonos with no problem, some say they're running aftermarket rotors with OEM pads with no problem.
You'll probably end up getting your brakes worked on 2-3 times before you find a combination that works for you. I did my brakes 4 times.
You'll probably end up getting your brakes worked on 2-3 times before you find a combination that works for you. I did my brakes 4 times.
04-03-20, 08:35 AM
#142
Driver School Candidate
New to forum, but just wanted to chim in. Dealt with the same problem when I first purchased my 2015 GS 350 F sport (2 piece rotor) at a Toyota dealership in 2018. Following day, after purchase the dreaded squeal started. After 2 attempts at the dealership to get the issue fixed, Toyota ended up coughing up the money and getting a lexus tech to install a new set of 2 piece rotors and pads. Some how problem solved. Fast forward to a couple days ago, getting the oil change to find out I need new pads. Decided to do the install myself seeing how easy it is compared to other cars, but dreaded the idea of having to deal with the squeal after. Until I saw this post, so decided to try the new pads (04465-30540) and shim kit (04945-30340) and no I didn't have the rotors resurfaced. Install went well and did add brake lube to shims and contact points on retaining clip. Test drove no issues or squeal and about 100 miles later still no issues. I will post if that changes. Hope this helps for anyone that is on the fence.
04-04-20, 07:14 AM
#143
Intermediate
Thread Starter
New to forum, but just wanted to chim in. Dealt with the same problem when I first purchased my 2015 GS 350 F sport (2 piece rotor) at a Toyota dealership in 2018. Following day, after purchase the dreaded squeal started. After 2 attempts at the dealership to get the issue fixed, Toyota ended up coughing up the money and getting a lexus tech to install a new set of 2 piece rotors and pads. Some how problem solved. Fast forward to a couple days ago, getting the oil change to find out I need new pads. Decided to do the install myself seeing how easy it is compared to other cars, but dreaded the idea of having to deal with the squeal after. Until I saw this post, so decided to try the new pads (04465-30540) and shim kit (04945-30340) and no I didn't have the rotors resurfaced. Install went well and did add brake lube to shims and contact points on retaining clip. Test drove no issues or squeal and about 100 miles later still no issues. I will post if that changes. Hope this helps for anyone that is on the fence.
Last edited by kennyD; 04-04-20 at 07:17 AM.
04-04-20, 03:47 PM
#144
Tech here, just wanted to chime in with my 2 cents.
For ALL F-sport brake pads, there IS a left and right orientation, and if the positioning of the brake pads are incorrect, they will cause a horrendous squeal that you will not be able to get rid of. If you look at the brake pads, there will be a big chamfer on one side of the pads, this should always be facing the downward position as that's the edge that 'bites' into the rotor while stopping.
As for the TSB brake pads, from my understanding and with talking to other techs, the composition should be the same. However, the biggest difference we've noticed is the groove running through the center of the brake pads as well as differently shaped chamfers on the top and bottom edges of the brake pads.
FInally, for those of you who want a 'fix all' solution, non F-sport brake pads WITH the non F-sport shims will fit and work. We've used this combination and have quite a bit of success at eliminating brake squeal for extra sensitive customers
Hope this helps!
For ALL F-sport brake pads, there IS a left and right orientation, and if the positioning of the brake pads are incorrect, they will cause a horrendous squeal that you will not be able to get rid of. If you look at the brake pads, there will be a big chamfer on one side of the pads, this should always be facing the downward position as that's the edge that 'bites' into the rotor while stopping.
As for the TSB brake pads, from my understanding and with talking to other techs, the composition should be the same. However, the biggest difference we've noticed is the groove running through the center of the brake pads as well as differently shaped chamfers on the top and bottom edges of the brake pads.
FInally, for those of you who want a 'fix all' solution, non F-sport brake pads WITH the non F-sport shims will fit and work. We've used this combination and have quite a bit of success at eliminating brake squeal for extra sensitive customers
Hope this helps!
04-04-20, 06:24 PM
#145
Lexus Test Driver
Tech here, just wanted to chime in with my 2 cents.
For ALL F-sport brake pads, there IS a left and right orientation, and if the positioning of the brake pads are incorrect, they will cause a horrendous squeal that you will not be able to get rid of. If you look at the brake pads, there will be a big chamfer on one side of the pads, this should always be facing the downward position as that's the edge that 'bites' into the rotor while stopping.
As for the TSB brake pads, from my understanding and with talking to other techs, the composition should be the same. However, the biggest difference we've noticed is the groove running through the center of the brake pads as well as differently shaped chamfers on the top and bottom edges of the brake pads.
FInally, for those of you who want a 'fix all' solution, non F-sport brake pads WITH the non F-sport shims will fit and work. We've used this combination and have quite a bit of success at eliminating brake squeal for extra sensitive customers
Hope this helps!
For ALL F-sport brake pads, there IS a left and right orientation, and if the positioning of the brake pads are incorrect, they will cause a horrendous squeal that you will not be able to get rid of. If you look at the brake pads, there will be a big chamfer on one side of the pads, this should always be facing the downward position as that's the edge that 'bites' into the rotor while stopping.
As for the TSB brake pads, from my understanding and with talking to other techs, the composition should be the same. However, the biggest difference we've noticed is the groove running through the center of the brake pads as well as differently shaped chamfers on the top and bottom edges of the brake pads.
FInally, for those of you who want a 'fix all' solution, non F-sport brake pads WITH the non F-sport shims will fit and work. We've used this combination and have quite a bit of success at eliminating brake squeal for extra sensitive customers
Hope this helps!
04-11-20, 07:44 AM
#147
Lead Lap
Just adding additional examples here. Got my front brakes done today. I have an AWD Fsport.
Resurfaced Rotors
New pads and shims
Part Numbers used on April 11th, 2020:
04465-30510 - Pad Kit
04945 - 30360 - Shim kit, Anti SQ
We shall see if the squeal is gone (mine was only the first couple brakes of the day).
Resurfaced Rotors
New pads and shims
Part Numbers used on April 11th, 2020:
04465-30510 - Pad Kit
04945 - 30360 - Shim kit, Anti SQ
We shall see if the squeal is gone (mine was only the first couple brakes of the day).
04-23-20, 04:29 PM
#148
Tech here, just wanted to chime in with my 2 cents.
For ALL F-sport brake pads, there IS a left and right orientation, and if the positioning of the brake pads are incorrect, they will cause a horrendous squeal that you will not be able to get rid of. If you look at the brake pads, there will be a big chamfer on one side of the pads, this should always be facing the downward position as that's the edge that 'bites' into the rotor while stopping.
As for the TSB brake pads, from my understanding and with talking to other techs, the composition should be the same. However, the biggest difference we've noticed is the groove running through the center of the brake pads as well as differently shaped chamfers on the top and bottom edges of the brake pads.
FInally, for those of you who want a 'fix all' solution, non F-sport brake pads WITH the non F-sport shims will fit and work. We've used this combination and have quite a bit of success at eliminating brake squeal for extra sensitive customers
Hope this helps!
For ALL F-sport brake pads, there IS a left and right orientation, and if the positioning of the brake pads are incorrect, they will cause a horrendous squeal that you will not be able to get rid of. If you look at the brake pads, there will be a big chamfer on one side of the pads, this should always be facing the downward position as that's the edge that 'bites' into the rotor while stopping.
As for the TSB brake pads, from my understanding and with talking to other techs, the composition should be the same. However, the biggest difference we've noticed is the groove running through the center of the brake pads as well as differently shaped chamfers on the top and bottom edges of the brake pads.
FInally, for those of you who want a 'fix all' solution, non F-sport brake pads WITH the non F-sport shims will fit and work. We've used this combination and have quite a bit of success at eliminating brake squeal for extra sensitive customers
Hope this helps!