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you 100% have 4 wheel abs, that's why you have 4 abs sensors, collapsing lines could be from age or contamination. I personally flush the brakes annually the fluid gets burnt and it's no longer up to spec, brake fluid is hydroscopic it absorbs water (reducing the boiling point), if not flushed it can ruin the whole system.
Yes, all info was listed, eventually. Two different posts finally contained all of it. I responded to the first one.
Thank you! I’m going to flush the brake system when I change the calipers, hoses and pads. I appreciate the help!
I got it figured it out thanks anyway.
be sure to keep the reservoir full when flushing, if air gets in there you will have to purge the abs pump with a scan tool
The RR was definitely the hottest at 304 degrees while the fronts were both around 140 degrees and the LR was around 240 degrees. I just replaced all 4 rubber lines, all 4 calipers, rotors and pads and did the break in process. Now I’m getting 140 on the fronts and 220 on both rear. I’m not sure why the rear is working harder than the fronts but they work.
To speed up the flushing I first use medicine syringe to suck out all of the old brake fluid out of the master cylinder reservoir. (Of course during this, dont even think about letting someone touch the brake pedal). Then fill it with new fluid so as your flushing you are putting fluid that is brand new into the lines and calipers which reduces the amount of fluid that you need get all the old stuff out.
