comandershark Posted June 25, 2023 Share Posted June 25, 2023 (edited) Hello Guys i own a Lexus GS 300 2001 Facelift. Everytime when i start the car after it cooled down it starts making squeaking noises for about a minute and stops. It only happens when the car was cold before. For example when i drive and make a stop for 1-3 hours it is not happening. I searched for the problem but the videos i watched the guys had the lights on my doesn't. Maybe somone knows how to fix it by myself without buying a new brake masyter cylinder assembly. I added a video with the noise. Edited June 25, 2023 by comandershark Quote Link to comment Share on other sites More sharing options...
comandershark Posted June 25, 2023 Author Share Posted June 25, 2023 Quote Link to comment Share on other sites More sharing options...
RX400h Posted June 26, 2023 Share Posted June 26, 2023 Are you sure it's not coming from the engine bay? Quote Link to comment Share on other sites More sharing options...
comandershark Posted June 27, 2023 Author Share Posted June 27, 2023 7 hours ago, RX400h said: Are you sure it's not coming from the engine bay? I made another video and it is coming from the cylinder in the back. Quote Link to comment Share on other sites More sharing options...
RX400h Posted June 28, 2023 Share Posted June 28, 2023 Do you have a mechanic's stethoscope? You can get one at Harbor Freight at a low price. It will come in handy to pinpoint the source of the sound. Quote Link to comment Share on other sites More sharing options...
Bykfixer Posted June 29, 2023 Share Posted June 29, 2023 Sounds like a servo or something (ABS module) moving back and forth. Maybe boosting pressure to the brake line(s) that loses pressure when the car sits long periods. https://www.repairsmith.com/blog/abs-module/ Quote Link to comment Share on other sites More sharing options...
dcfish Posted July 1, 2023 Share Posted July 1, 2023 I had a 98 GS300 FOR 225000 Miles, I went through 3 Master/ABS cylinders, I think there is a subject on using a brake booster from a SC430 Check into that. Quote Link to comment Share on other sites More sharing options...
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