Hello , Prius 2014 190k Having issues with my brakes front Discs & pads are Toyota I will scan the code & upload tonight , history since I replaced my brakes first time messed up , specially the shims , Took pads discs off several time , Cleaned everything well , lubed the pins , I have now brought another set disc & pads from Toyota & installed , no mistakes this time it has improved but still the honk noise there & on hard braking feels like slipping, as if abs not working no lights on dash I am planning on brake fluid change next project thanks Will upload the code I have update no codes
If you have a honk noise, you should bleed the full system for gas bubbles. Bleeding is a different procedure from simple fluid replacement, and requires a scan tool. There is a non-scan-tool procedure for simple fluid replacement, but that assumes no bubbles are present.
Brake fluid change over due to, Will try that first , Car car channel guy claims he’s ex Toyota technician, Unplug battery & can change brake fluid using vacuum pump
Do you think that’s what it is , Didn’t open the bleeder ever at first no noise , but after changing pads & pushing piston in several times , The noise came but fluid needs changing sure
You mentioned a honking noise. That is caused by bubbles of gas in the brake fluid. The system does not need to ever have been opened for gas bubbles to be present. Nitrogen can leak slowly out of the system's pressure accumulator and form bubbles. A full system bleed removes the bubbles. Bleeding is a different procedure from simple fluid replacement, and requires a scan tool. There is a non-scan-tool procedure for simple fluid replacement, but that assumes no bubbles are present. The fluid replacement procedure will not necessarily remove all bubbles from the system. The bleed procedure is needed for that.
Pay attention . You should also not be squeezing down the Pistons with the bleeder and the system closed you let fluid out bleeder not push it thru like old days . This can lead to more problems than not in these type systems . So now you've done this several times . And you're at about the right mileage for the brake parts on the firewall to be failing soon anyhoww. So we're all getting caught up and coming full circle.
No reason I can think of, from what you've described. If you want peace of mind about the sensors for some reason, read up on the "sensor check mode" in the repair manual. There's a way to activate it using Techstream (or another capable scan tool) and a way that doesn't need any scan tool. Once you've activated the check mode, you drive around in a prescribed pattern (make sure you've found a place to safely do that before you start) and the ECU uses extra-strict standards for all the sensor inputs. If you finish driving the pattern and get the normal-completion result, you can be pretty sure things are all shipshape. Toyota does recommend this check any time the bearings have been worked on, to detect any borderline problems before a customer drives the car away and then has to come back. Toyota Service Information and Where To Find It | PriusChat Naturally, make sure the bubbles are out of the fluid first. The linear solenoid offset should also be learned first, which normally happens anyway at the end of the full bleed procedure.
