rear brake shudder
08-14-24, 10:31 AM
#16
It usually occurs in front rotors, and you feel steering wheel shake when applying the break. The main cause is driving high speeds then gliding on the break for time period. Related to mostly highway drivers.
Never heard of it occurring in the rears, to me it sounds its safety system or caliper issue.
If it is warped rotors and they cut rotor you need new pads to fix it, if just rotor cut and you throw back old pad it will be miss shaped. Which will not be smooth on smooth surface which will still cause wobble.
Never heard of it occurring in the rears, to me it sounds its safety system or caliper issue.
If it is warped rotors and they cut rotor you need new pads to fix it, if just rotor cut and you throw back old pad it will be miss shaped. Which will not be smooth on smooth surface which will still cause wobble.
08-14-24, 01:07 PM
#17
Pit Crew
Thread Starter
Strange it is rear brakes, have they check calipers? The other thing that comes to mind is the safety systems that brakes if your taking corner to fast. You may want to shut off all proactive safety features and give it try. As it may be that it thinks your going to fast for particular movement and is applying the brakes lightly in back to help counter your driving at particular speed taking a corner for example.
Brake rotor warpage usually happens when your foot rests on the brake at a stop. Take a look at this short video in its entirety.
https://www.youtube.com/watch?v=VEL9diENZY0
Science only, not myth.
Cheers
https://www.youtube.com/watch?v=VEL9diENZY0
Science only, not myth.
Cheers
It usually occurs in front rotors, and you feel steering wheel shake when applying the break. The main cause is driving high speeds then gliding on the break for time period. Related to mostly highway drivers.
Never heard of it occurring in the rears, to me it sounds its safety system or caliper issue.
If it is warped rotors and they cut rotor you need new pads to fix it, if just rotor cut and you throw back old pad it will be miss shaped. Which will not be smooth on smooth surface which will still cause wobble.
Never heard of it occurring in the rears, to me it sounds its safety system or caliper issue.
If it is warped rotors and they cut rotor you need new pads to fix it, if just rotor cut and you throw back old pad it will be miss shaped. Which will not be smooth on smooth surface which will still cause wobble.
08-15-24, 10:57 AM
#18
Pit Crew
Thread Starter
just got off the phone with the service manager at lexus about another issue and they will ask the engineer when they are in next regarding why Lexus applies the rear electronic parking brake every time the ignition is turned off. also going to inquire if this is a changeable setting... more to come.
08-15-24, 11:16 AM
#19
Pit Crew
Thread Starter
ok. next discovery. the loaner RX I have (and my TX) are all laid out the same. these cars are equipped with an automatic parking brake interlock feature which can be turned on or off. the feature auto applies the parking brake when the transmission is put into park or put into reverse/drive. the video below (example on an older GS) summarizes how to enable or disable this feature. it takes about a 5 second press or pull on the button to change the setting and a notification is displayed in the dash once complete. I have a feeling this might significantly help with uneven brake pad deposits on the rear rotors. hope this helps both current and future TX owners as well as countless RX owners who seem to be plagued by this issue.
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