1999 Subaru Forester

DRIVING ON FAST DOWNHILL SECTION OF MOUNTAIN 2 LANE HIGHWAY, ON ICE / PACKED SNOW, TAPPED BRAKES WHILE ENTERING CURVE ... 2 SECONDS LATER WITH ABSOLUTELY NO WARNING THE VEHICLE LOST ADHESION, OVERSTEERING DANGEROUSLY. I RECOVERED WITH CONSIDERABLE OPPPOSITE STEERING LOCK AND SLIGHT APPLICATION OF POWER (CAR IS ALL-WHEEL-DRIVE.) IT HAPPENED SO FAST, I KNEW NOT WHAT HAD CAUSED THE CAR TO SLIDE OUT OF CONTROL. TODAY, I LEARNED THE CAUSE OF THE PROBLEM. WITH THE GEARSHIFT SELECTOR IN DRIVE, TRAILING THROTTLE AND APPLICATION OF BRAKES, THE COMPUTER WILL OCCASIONALLY (AUTOMATICALLY) DOWN-SHIFT THE CAR INTO 3RD. GEAR. THIS SOFTWARE BUG, COMPLETELY UNEXPECTED AND TOTALLY DANGEROUS IN MARGINAL TRACTION CONDITIONS CAUSEDG A VICIOUS SKID FROM WHICH MOST DRIVERS OF AVERAGE EXPERIENCE WOULD HAVE NOT RECOVERED. WE PUT ABS ON CARS SO THAT BRAKING CAN BE MORE PREDICTABLE WHEN DRIVING UNDER MARGINAL COEFFICIENTS, THAN WE DESIGN SOFTWARE WITH A BUG WHICH HAS THE POTENTIAL TO THROW THE CAR TOTALLY AND UNPREDICTABLY OUT OF CONTROL ON ICE. NICE WORK, SUBARU !*AK

I HAVE DETECTED THAT WITHIN THE SPEED RANGE OF 5 MILES PER HOUR UP TO 70 MILES PER HOUR, THE BRAKE ROTORS (FRONT AND BACK) CAUSE A PREMATURE VIBRATION WHEN BRAKING WITH REASONABLE FORCE ON BRAKE PEDAL FROM THESE SPEEDS. THIS VIBRATION IS SUSPECTED TO BE CAUSING IRREGULAR WEAR ON ALL FOUR TIRES, AND WILL WEAR VITAL SUSPENTION AND BRAKING COMPONENTS PREMATURELY, CAUSING A POTENTIAL SAFETY HAZARD.

NEW VEHICLE BECAME UNCONTROLLABLE, VEERING FROM SIDE TO SIDE, THEN GOING OFF THE ROAD, WITHIN FIRST 7 MILES OF DRIVING AT 60 MPH. *** 7 PURCHASED A NEW SUBARU FORESTER L ON JUNE 24, 1999, AND DROVE 200 MILES IN CITY AND SUBURBAN TRAFFIC, MAXIMUM SPEED 55 MPH. *** 7 LEFT ROCHESTER FOR FAMILY VACATION ON JULY 2, 1999, TRAVELLING EAST ON I-90. THE CAR CONTAINED TWO ADULTS AND TWO CHILDREN. DRIVER AND PASSENGERS WERE WEARING SEATBELTS AND ALL LUGGAGE WAS IN THE LUGGAGE COMPARTMENT. THE WEATHER WAS HOT AND THE ROADS WERE DRY. *** 7 NEAR MILEPOST 343, BETWEEN 10:30 AND 10:45 A.M., WHILE DRIVING AT 60 MPH, A NORMAL STEERING CORRECTION LED TO A SHARP VEER BY THE VEHICLE, FOLLOWED BY 4 OR 5 UNCONTROLLABLE SIDE-TO-SIDE OSCILLATIONS, EACH INCREASING IN MAGNITUDE. THE DRIVER HAD THE SENSE THAT THE WHEELS WERE NOT RESPONDING TO HER CONSCIOUS ATTEMPTS TO BRING THE STEERING UNDER CONTROL. SHE HAD HER FOOT OFF THE ACCELERATOR AND WAS NOT BRAKING. THIS OCCURRED WITHIN 7 MILES OF THE FIRST TIME THE VEHICLE WAS TRAVELING MORE THAN 55 MPH. *** 7 THE CAR WENT OFF THE ROAD TO THE RIGHT, DOWN A BANK INTO A DITCH CONTAINING MUD, WATER, AND VEGETATION. IT HIT THE DITCH AT AN ANGLE, BOUNCED, AND CAME TO A STOP IN THE GRASS ON THE OTHER SIDE. *** 7 DURING THESE EVENTS THERE WAS NO SOUND FROM THE ANTI-LOCK BRAKE SYSTEM AND THE CAR WAS NOT SKIDDING, BUT TIRE TRACKS WERE VISIBLE ON BOTH THE PAVED AND GRAVEL SHOULDERS WHERE THE CAR LEFT THE ROAD. *** 7 WE HAD NO PHONE AND THE CAR WAS OPERABLE, SO WE DROVE IT SLOWLY THROUGH MOWED GRASS UNTIL WE PASSED THE DITCH AND WERE ABLE TO PULL ONTO THE SHOULDER OF I-90. WE LEFT I-90 AT EXIT 43 (3 MILES) AND SLOWLY DROVE SEVERAL MILES ALONG ROUTE 96 TO VAN BORTEL SUBARU WHERE WE HAD PURCHASED THE CAR. *** 7 WE CALLED THE STATE POLICE AND INSURANCE COMPANY TO REPORT THE ACCIDENT. *** THE CHILD IN THE SEAT BEHIND THE DRIVER WAS TREATED IN HOSPITAL EMERGENCY ROOM FOR ELBOW INJURY. *AK