2003 Toyota Rav4 Brakes Problems

I BOUGHT A USED 2003 TOYOTA RAV4 IN 2006. SHORTLY AFTER I PURCHASED THE VEHICLE I NOTICED IT DID NOT STOP VERY EASILY WHEN I WAS DRIVING ON EVEN MILDLY SLIPPER ROADS. IT ALSO MAKES A HORRIFIC CHATTERING NOISE WHEN I DEPRESS THE BRAKES (ONLY WITH SLIPPERY CONDITIONS). I CONTACTED THE TOYOTA DEALERSHIP BACK IN 2006 OR 2007 WHERE I PURCHASED THE VEHICLE AND WAS TOLD THIS WAS NORMAL AND THAT WAS HOW THE BRAKES WERE DESIGNED. THIS BRAKING ISSUE HAS CONTINUED. I HAVE EVEN CHECKED IN TO BUYING NEW TIRES (LAST FALL AND AGAIN THIS WINTER) AND THE MECHANIC SAID MY TIRES WERE FINE. I HAVE SORT OF LEARNED TO LIVE WITH THIS BRAKING ISSUE BY MAKING SURE WHENEVER THERE IS EVEN A SMALL AMOUNT OF SNOW THAT I SLOW DOWN BY DOWNSHIFTING TO 2ND OR 1ST RATHER THAN USING THE BRAKES. *TR

TL*THE CONTACT 2003 TOYOTA RAV4. THE CONTACT STATED THAT THERE WAS AN EXCESSIVE AMOUNT OF RUST AND CRACKS ON THE ROTORS OF THE FRONT LEFT AND RIGHT BRAKES. A LOCAL MECHANIC REPLACED THE LEFT AND RIGHT FRONT ROTORS. THE CONTACT CONFIRMED THE FAILURE WITH AN AUTHORIZED DEALER. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 64,000. UPDATED 01/12/10 *BF THE FRONT ROTORS HAD SEPARATED AT THE HUBS. UPDATED 01/15/10.*JB

WHILE COASTING DOWN A HILL DRIVER BEGAN TO DEPRESS THE BRAKES AND THERE WAS NO BRAKE PRESSURE. ALSO, DRIVER HAD DIFFICULTY WITH THE VEHICLE DOWN SHIFTING AT ANYTIME. *AK