Okay passenger rear on a 2013 GS350 F Sport RWD. Brand new rotors and brand new pads.

What on earth and why or what is causing this noise? You hear it when you first pull out from a stop and then again when you start to slow down around 20 mph. I am clueless what this can be. When i saw new pads and rotors, i literally just got done putting them on.

 

Something is def not right. My guess would be to go back and check the backing plates and retainers? Did you use brake lube?

Also on the other Stuck Caliper pm you sent me and thread you started, you may want to Tag or pm Knucklebus. Seems he had some threads with wheel bearing and stuff, and seem to know alot about the wheels hubs and everything connected down there and behind.

 

Agree with @jgscott , I had the same exact sound on my passenger rear brake system before. I don't remember what it was specifically, but it was something with the rotor not seated correctly, or the hardware issue mentioned above.
It should be easily fixed.

 

Loks like you have spacers installed as well? Might want to check if everything is installed and seated properly. Did you do the brake job yourself or done by a competent mechanic?

 

nah i did the work myself. There are no spacers anywhere, those are stock rims and lugs.

i might just take it to a shop and have them look it all over and test drive it so they can hear the sound.

how would the rotor not be seated properly
tho? It went back as far as it could have

 

Did you resolve the parking brake issue from your other thread? It sounded like something was broken when you were finally able to remove the rotor. Does the parking brake work normally?

 

no, im taking it to a shop. Moreso the reasoning is i dont feel like taking it all apart again. The driver side came off so easy. Something was hung up on the parking brake i think that prevented the rotor coming off the passenger side. We dont ever use the actual emergency/parking brake but when you put the car in park, you hear something engage and it all sounds normal. Nothing clanking around or anything but i have a small spring in my cup holder that i know goes on the parking brake. Just hope the shop is willing to look and hopefully fix the noise

 

If you hear something engage in park then it's the auto parking brake mode. That's a good thing as it places less stress on the parking pawl of the transmission when in park. Whether it's the cause of the noise or not, definitely get that checked out, the spring definitely should be installed on the parking brake to keep thing in place.

 

So the shop i called said there is a procedure to disarm the electric parking brake so you can take off the rotor?? Is this true? If so, i was not aware. He said theres a special procedure or tool?

 

This is true for the NX and IS but not the GS. Those cars use the brake piston as the parking brake whereas the GS has a traditional drum brake that is simply released with the button before a brake job is done.

 

Meaning that if we dont ever use the parking brake button it would have never been engaged. I assume thats the button you are referring to

 

Thats not true. By default, there is an auto-parking brake mode that engages the parking brake every time the vehicle is placed into park. This can be disabled but its active unless you disable it.

 

okay so maybe that was on me then cause i wasnt aware of that and the reason why the passenger side was so hard to take apart.

so for future, do you know how to disable it?

 

Hold down the parking brake switch until the Auto indicator light turns off.

 

But you would need to release the Parking brake if it is set or on Auto.