I am experiencing problems with my 2001 toyota highlander. whenever i press on the brake it pulsates,vibrates and it makes a distracting loud ratcheting sound. when the speedometer drops to less than 10mph- it happens. this happens so frequently, that i really hate driving anywhere. i took it to several different mechanics. after being told the problem that i am having is due to warped rotors and warn brake pads- i paid to have new brake pads and rotors installed. that didn't work. (now they say it is an abs problem) i took the highlander to a toyota dealer who without properly performing a computer scan, blamed the mechanics who replaced my rotors and brake pads for the problem that i have been having-and they told me that it was not the abs system. anyway, i am still having the same problem that both professional mechanics disagree on. pulsation, vibration and loud noises. note: neither of the two indicator lights brake/abs has activated since the problem started. finally, i took the highlander to a third mechanic, paid for an inspection of my abs system and received several computer scan abs faults codes:c1271-c1278- abs activates at a lower speed. also, master cylinder pressure sensor malfunction c1281. i want toyota to repair the defects in my toyota highlander. *tr