VEHICLE DESCRIPTION: PASSENGER VEHICLES. CERTAIN RESERVOIR TANK CAPS ON THE BRAKE MASTER CYLINDER WERE PRODUCED WITH A WORN OUT DIE AND LACK VENTILATION HOLES. AS A RESULT, THE PRESSURE IN THE RESERVOIR TANK CAN DROP GRADUALLY AS THE BRAKE PAD OR SHOE WEARS AND AMBIENT TEMPERATURE DROPS. ALSO, THE PRESSURE COULD REACH A POINT THAT THE BRAKE CALIPER AND DRUM CYLINDER ARE PULLED BACK BY THE VACUUM IN THE RESERVOIR TANK WHEN THE VEHICLE IS PARKED FOR A LONG TIME.
THIS CONDITION COULD CAUSE REDUCED BRAKE EFFICIENCY, INCREASING THE RISK OF A CRASH.
DEALERS WILL INSPECT THE RESERVOIR CAP AND REPLACE IT, IF NECESSARY.
OWNER NOTIFICATION BEGAN APRIL 21, 2000. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT MAZDA AT 1-800-222-5500.ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).