2008 Toyota Matrix Problems

I HAVE A MANUAL TRANSMISSION CAR. WHEN I STARTED IT IN MY DRIVEWAY AND PUT IN REVERSE THE CAR IMMEDIATELY WHEN SPEEDING BACKWARD OUT OF CONTROL. I ENGAGED THE CLUTCH WHILE THE CAR CONTINUED TO SPEED IN REVERSE THEN MOVED TO 1 GEAR AND THE CAR STARTED SPEEDING FORWARD OUT OF CONTROL. I WAS ABLE TO PUT THE CAR IN NEUTRAL AND TURN IT OFF TO STOP THE ACCELERATION OF THE CAR.

TL* THE CONTACT OWNS A 2008 TOYOTA MATRIX. WHILE ATTEMPTING TO ACCELERATE FROM PARK, THE ACCELERATOR PEDAL WAS DEPRESSED AND THE VEHICLE ACCELERATED EXCESSIVELY. THE CONTACT HAD TO DEPRESS THE CLUTCH AND SHIFT THE GEAR SHIFTER IN NEUTRAL IN ORDER TO STOP THE VEHICLE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 150,000. THE VIN WAS UNAVAILABLE.

2008 TOYOTA MATRIX. CONSUMER WRITES IN REGARDS TO TOYOTA COMPUTER SAFETY RECALL. *LD THE CONSUMER STATED THE DEALER HAD NOT REPLACED THE ECM, BUT CLAIMED IT WAS REPLACED. *JS

TL* THE CONTACT OWNS A 2008 TOYOTA MATRIX. WHEN THE BRAKE PEDAL WAS DEPRESSED, THE VEHICLE SHUT OFF. THE CONTACT WOULD HAVE TO TURN THE VEHICLE OFF AND ON IN ORDER TO DRIVE PROPERLY. THE CONTACT STATED THAT THE SAME FAILURE OCCURRED NUMEROUS TIMES, ESPECIALLY AT RED LIGHTS. THE VEHICLE WAS TAKEN TO BENNETT TOYOTA (1951 LEHIGH ST, ALLENTOWN, PA 18103), BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS ALSO CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 97,000.

TL* THE CONTACT OWNS A 2008 TOYOTA MATRIX. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 30 MPH WHEN THE VEHICLE IN FRONT OF THE CONTACT MADE AN UNEXPECTED STOP CAUSING THE CONTACT TO REAR END THE VEHICLE IN FRONT. THERE WAS FRONT-END DAMAGE TO THE VEHICLE. THE AIR BAGS DID NOT DEPLOY. THE VEHICLE WAS NOT TOWED AND A POLICE REPORT WAS FILED. THE CONTACT RECEIVED INJURIES TO THEIR NOSE AND NEEDED MEDICAL ATTENTION. THE VEHICLE WAS TAKEN TO A COLLISION CENTER HOWEVER, WAS NOT REPAIRED. THE DEALER WAS INFORMED OF THE FAILURE AND INFORMED THE CONTACT THAT THEIR VEHICLE WAS NOT INCLUDED IN A RECALL. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND OPENED A CASE REGARDING THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 235,000.

TL* TAKATA RECALL. THE CONTACT OWNS A 2008 TOYOTA MATRIX. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V127000 (AIR BAGS); HOWEVER, THE PARTS NEEDED TO PERFORM THE REPAIR WERE UNAVAILABLE. THE MANUFACTURER WAS NOTIFIED OF THE ISSUE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. VIN TOOL CONFIRMS PARTS NOT AVAILABLE.

SUDDEN ACCELERATION IN 2008 MATRIX AUTOMATIC: FIRST KNOWN FAILURE. CAR BROUGHT NEW IN SEPTEMBER 2007; ODOMETER: 6000 MILES. WHILE DRIVING APPROXIMATELY 35 MPH ON EVEN STRAIGHT SMOOTH ROADWAY, THERE WAS A SUDDEN ACCELERATION TO GREATER THAN 70 MPH. WHEN BRAKES WERE APPLIED, THEY DEPRESSED TO FLOOR WITHOUT ANY EFFECT. CAR CONTINUED TO ACCELERATE RAPIDLY. SHIFTED TO NEUTRAL WITHOUT SUCCESS. CAR SLOWED AFTER BEING PLACED IN REVERSE. COASTED TO A STOP. PLACED GEAR IN 2 AND DROVE SLOWLY HOME - APPROXIMATELY 1/2 MILE. FLOOR MATS WERE NOT NEAR EITHER PEDAL AND WERE KEPT STATIONARY BY HOOKS DESIGNED TO KEEP MATS FROM SHIFTING. CALLED TOYOTA SERVICE DEPARTMENT: TOLD THAT FLOOR MATS WERE THE PROBLEM; TALKED TO SERVICE MANAGERS WHO STATED THAT THE SEQUENCE OF EVENTS DESCRIBED WERE IMPOSSIBLE, NO PROBLEMS WERE KNOWN TO EXIST FOR MATRIX AND GREATER THAN 99% OF SUDDEN ACCELERATION PROBLEMS WERE DUE TO DRIVER ERROR. AFTER A DISCUSSION, THE CAR WAS EVALUATED BY THE SERVICE DEPARTMENT. THE FOLLOWING WAS REPORTED: FLOOR MATS HELD IN PROPER PLACE NO OBJECTS ON FLOOR NORMAL BRAKE PEDAL OPERATION NORMAL ACCELERATOR PEDAL OPERATION HEALTH CHECK - POWERTRAIN, CHASSIS, ELECTRICAL, NETWORK SYSTEMS - OK COMPUTER CODES - NO ABNORMALITIES FOUND NORMAL THROTTLE BODY INSPECTION TIRES WITH NORMAL WEAR & FUNCTION PROBLEM WAS NOT DUPLICATED ON TEST DRIVE. WAS TOLD THAT THE CAR IS FUNCTIONING NORMALLY IN ALL AREAS AND HAS NO PROBLEMS. IMPLIED THAT MY EXPERIENCE WAS A MISPERCEPTION OR MISREPRESENTATION. ASSESSMENT: THERE WAS A SIGNIFICANT MALFUNCTION IN THE MATRIX WHICH COULD HAVE LED TO CRITICAL INJURIES OR LOSS OF LIFE. ONLY DUE TO THE TRAFFIC FLOW AT PRECISELY THAT MOMENT, NO ONE WAS INJURED. THE TOYOTA SERVICE DEPARTMENTS DENIED THAT THE PROBLEM EXISTS. RECOMMENDATION: SUDDEN UNEXPECTED ACCELERATION SHOULD BE INVESTIGATED UNTIL AN ANSWER /SOLUTION IS FOUND. THE FINDINGS SHOULD BE SHARED WITH THE PUBLIC. THE COST FOR REPAIRS SHOULD BE PAID BY TOYOTA. *TR

ON MAY 28TH, WHILE PULLING INTO MY DRIVEWAY AS I'VE DONE WITH MY 2008 MATRIX HUNDREDS OF TIMES, THE BRAKES FAILED AND MY CAR RAN INTO MY HOUSE. I COULD FEEL THE ABS FIRING, BUT THE CAR FAILED TO SLOW DOWN. I HAVE A SHORT DRIVEWAY, ABOUT A CAR AND A HALF IN LENGTH, AND IT IS DOWNHILL. THE APPROACH TO THE DRIVEWAY HAS ME TURNING AND BRAKING WHILE GOING OVER THE BUMP OF THE CURB. TO ADD TO THAT, IT WAS RAINING THE DAY THIS HAPPENED. FORTUNATELY, MY APPROACH WAS RATHER SLOW AND NO ONE WAS INJURED. MY CAR SUSTAINED SOME MINOR DAMAGE, AND MY GARAGE SUSTAINED MORE DAMAGE FROM THE FORCE OF THE IMPACT. UNDER THE ADVISEMENT OF MY AUTO INSURANCE AGENCY, I HAD THE CAR TOWED TO THE TOYOTA DEALERSHIP FOR INSPECTION. THEY INFORMED ME THAT THEY RAN A COMPLETE DIAGNOSTIC, AND ALL OF THE SYSTEMS WERE RUNNING FINE. THEY REPORTED TO ME THAT THE BRAKE PADS WERE IN GOOD CONDITION, AND THERE WERE NO HOT SPOTS. FROM THEIR PERSPECTIVE, THE CAR SEEMED FINE. I ADVISED THEM THAT WHILE THE DIAGNOSTICS REPORTED THE CAR AS BEING FINE, THE INABILITY FOR THE CAR TO BRAKE COMING INTO MY DRIVEWAY, AND THE DAMAGE SUSTAINED, LEAVES ME NEEDING A BETTER ANSWER THAN THAT. THEY TOLD ME THAT WHEN IT NEXT RAINED THAT I COULD COME IN AND DRIVE THE CAR WITH ONE OF THEIR TECHNICIANS TO TRY AND RE-CREATE THE ISSUE. IT HAS BEEN SEVERAL WEEKS, AND WE HAVE NOT HAD THE PROPER WEATHER CONDITIONS WHEN THEY HAVE BEEN OPEN AND I HAVE BEEN ABLE TO GET OFF WORK AND GET OVER THERE WITH OUR ONE REMAINING CAR. WHEN I SPOKE TO THE DEALER REP ON MONDAY, HE RE-ITERATED HOW THEIR SOFTWARE DIAGNOSTIC SHOWED THE CAR WAS OPERATING FINE. I ASKED HIM HOW THEN THE 2010 PRIUS HAD A SOFTWARE UPDATE TO CORRECT A BRAKING ISSUE. HE SAID THAT THE PRIUS SITUATION WAS COMPLICATED, BROUGHT ON BY THE COMBINATION OF TURNING, GOING OVER A BUMP AND BRAKING AT THE SAME TIME. I TOLD HIM THAT WAS WHAT HAPPENED DURING MY ACCIDENT. THERE WAS SILENCE, AND A REPEAT STATEMENT THAT I COULD COME IN AND TEST THE VEHICLE WITH THEIR TECH. *TR

TL* THE CONTACT OWNS A 2008 TOYOTA MATRIX. THE CONTACT STATED THAT THERE WAS AN INTERNAL ELECTRICAL SHORT THAT PROGRESSED INTERMITTENTLY FOR THREE YEARS. IN ADDITION, THE INSTRUMENT CLUSTER FLICKERED, VARIOUS INTERNAL AND EXTERNAL LIGHTS RANDOMLY ILLUMINATED, AND THE POWER STEERING FAILED, WHICH CAUSED THE STEERING WHEEL TO BE EXTREMELY TIGHT. THE CONTACT ALSO INDICATED THAT THE VEHICLE STALLED MULTIPLE TIMES WITHOUT WARNING. THE FIRST DEALER DIAGNOSED THAT THE BATTERY WOULD NOT HOLD A CHARGE. THE DEALER REPLACED THE BATTERY AND THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE FIRST DEALER WHO THEN FLUSHED THE ENGINE ASSEMBLY, REPLACED THE DRIVE BELT, AND INSPECTED THE ECU FOR AN INTERNAL FAILURE. THE FIRST DEALER REPLACED THE ECU AND RESTRUCTURED THE MAIN CONTROL PLUG ON THE BODY CONTROL MODULE, BUT THE VEHICLE CONTINUED TO RANDOMLY STALL WITHOUT WARNING. THE VEHICLE WAS TOWED TO A SECOND DEALER WHERE IT WAS DIAGNOSED THAT THE JUNCTION CONTROL FAILED AND NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE APPROXIMATE FAILURE MILEAGE WAS 55,318.

TL* THE CONTACT OWNS A 2008 TOYOTA MATRIX. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 30 MPH AND ATTEMPTING TO ACCELERATE, THE ACCELERATOR PEDAL FAILED TO RESPOND. THE CONTACT ATTEMPTED TO PULL OVER AND DISCOVERED THAT THE STEERING WHEEL WAS DIFFICULT TO TURN AFTER THE ENGINE AND POWER STEERING FLUID WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS POWERED OFF AND BACK ON, THE WARNING INDICATORS WERE NO LONGER ILLUMINATED AND THE VEHICLE WAS ABLE TO BE DRIVEN. THE FAILURE RECURRED ON SEVERAL OCCASIONS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC. THE TECHNICIAN DIAGNOSED THAT THE ENGINE CONTROL MODULE WAS FAULTY AND NEEDED TO BE REPLACED. THE VEHICLE WAS THEN TAKEN TO A DEALER AND WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 10V384000 (ENGINE AND ENGINE COOLING). THE APPROXIMATE FAILURE MILEAGE WAS 114,000.

TL* THE CONTACT OWNS A 2008 TOYOTA MATRIX. WHEN THE BRAKE PEDAL WAS DEPRESSED, THE VEHICLE SHUT OFF. THE CONTACT WOULD HAVE TO TURN THE VEHICLE OFF AND ON IN ORDER TO DRIVE PROPERLY. THE CONTACT STATED THAT THE SAME FAILURE OCCURRED NUMEROUS TIMES, ESPECIALLY AT RED LIGHTS. THE VEHICLE WAS TAKEN TO BENNETT TOYOTA (1951 LEHIGH ST, ALLENTOWN, PA 18103), BUT WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS ALSO CONTACTED. THE APPROXIMATE FAILURE MILEAGE WAS 97,000.

TL* THE CONTACT OWNS A 2008 TOYOTA MATRIX. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 30 MPH AND ATTEMPTING TO ACCELERATE, THE ACCELERATOR PEDAL FAILED TO RESPOND. THE CONTACT ATTEMPTED TO PULL OVER AND DISCOVERED THAT THE STEERING WHEEL WAS DIFFICULT TO TURN AFTER THE ENGINE AND POWER STEERING FLUID WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS POWERED OFF AND BACK ON, THE WARNING INDICATORS WERE NO LONGER ILLUMINATED AND THE VEHICLE WAS ABLE TO BE DRIVEN. THE FAILURE RECURRED ON SEVERAL OCCASIONS. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC. THE TECHNICIAN DIAGNOSED THAT THE ENGINE CONTROL MODULE WAS FAULTY AND NEEDED TO BE REPLACED. THE VEHICLE WAS THEN TAKEN TO A DEALER AND WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 10V384000 (ENGINE AND ENGINE COOLING). THE APPROXIMATE FAILURE MILEAGE WAS 114,000.

VERY SIMILAR TO ODI ID NO. 10219567 EXCEPT I WAS ALREADY ON THE INTERSTATE. LEFT REAR PASSENGER WINDOW SHATTERED SPONTANEOUSLY. SUNNY DAY, TEMPERATURE NEAR 70, TRAVELING ON INTERSTATE AT ABOUT 69 MPH, NO TRUCKS NEARBY. WINDOW HAS NOW BEEN REPLACED; DEALERSHIP SAID IT SEARCHED FOR BUT COULD FIND NO EVIDENCE OF ROCK OR PEBBLE. *TR

DRIVING NEW TOYOTA MATRIX (<400 MILES) ENTERING FREEWAY, HEAR A POP BEHIND DRIVER. CAR CONTINUES TO DRIVE FINE. WHEN STOPPED, NOTICED THAT ENTIRE REAR QUARTER WINDOW GLASS IS SHATTERED. NO EVIDENCE OF HAVING BEEN HIT BY ANYTHING (HIGHLY IMPROBABLE GIVEN CIRCUMSTANCES OF WHEN POP WAS HEARD). NO HOLE IN WINDOW. BY THWE NEXT DAY SHATTERED WINDOW GLASS IS FALLING OUT OF FRAME. DEALER NOTIFIED , TAKING NO ACTION AS YET. REAR PASSENGER, IF PRESENT, WOULD HAVE BEEN ENDANGERED BY THE SHATTERED GLASS. *TR

DANGEROUS, POOR TRACTION ON WET PAVEMENT SUMITOMO TOUR PLUS LS-H WHEN ON A STEEP ROAD IN SAN FRANCISCO, MY TIRES SKIDDED RATHER THAN GRAB THE ROAD ON A RAINY DAY IN THE WINTER OF 2016. THIS ALSO HAPPENED DURING THE WINTER OF 2017. IT IS DANGEROUS. I NEED TO CHANGE THE TIRES BEFORE SELLING MY CAR TO ANOTHER PERSON.

2008 TOYOTA MATRIX HAS PREMATURE TIRE WEAR IN TIRES AFTER ONLY 15,000 MILES. TOYOTA SAYS THIS IS NORMAL AND THAT I HAVE TO PAY TO REPLACE THE TIRES. THE TIRES ARE NOT DEFECTIVE, IT IS THE ALIGNMENT IN THE CAR. *TR

TOYOTA MATRIX XR 2008:BOUGHT NEW. ONE DRIVER CAR. TWENTY-TWO MONTHS OF DRIVING WITH 11,000 MILES ON IT. TOOK TO DEALER ON MARCH 12, 2010 BECAUSE LEAKING TRANSMISSION FLUID. DIAGNOSED AS FAULTY HARMONIC EQUALIZER ON FRONT AXLE WHICH CAUSED SCARING ON AXLE AND INSIDE TRANSMISSION INSTALLED NEW AXLE AND TRANSMISSION. TEN MINUTES AFTER PICKING UP CAR AFTER FIRST PROBLEM CORRECTED: CAR LOST POWER WHILE I WAS DRIVING. NEARLY KILLED BY SEMI-TRUCK BUT AVOIDED ACCIDENT. DIAGNOSED AS FAULTY COMPUTER. DEALER INSTALLING NEW COMPUTER NOW. UPDATED 03/29/10 *BF UPDATED 05/05/10.*JB

WITHOUT WARNING MY 2003 TOYOTA MATRIX TRANSMISSION LOCKED UP. I'M TOLD I NEED A NEW ONE, AND MY CAR HAS ONLY 60,560 MILES. *TR

ON THE EVENING OF JANUARY 26, 2010, I WAS DRIVING MY 2008 TOYOTA MATRIX AND REAR ENDED ANOTHER DRIVER. PRIOR TO THE CRASH, I HAD BEEN TRAVELING AT ROUGHLY 35 MPH. THERE WERE NO OTHER PEOPLE IN MY CAR AT THE TIME OF THE CRASH. THE IMPACT WAS GREAT ENOUGH FOR THE DRIVER AIRBAG TO DEPLOY. THE REAR SEATS ARE A 60/40 SPLIT; THE 60 SIDE HELD A CHILD'S BOOSTER SEAT AND THE 40 SIDE HELD A CHILD'S CARSEAT. BOTH SIDES WERE LOCKED INTO PLACE PRIOR TO THE CRASH. AT THE TIME OF THE CRASH, THE 60 SIDE FLEW FORWARD, SMASHING THE BOOSTER SEAT IN BETWEEN THE FRONT SEAT AND THE, NOW FLAT, REAR SEAT. THE 40 SIDE REMAINED IN PLACE, DUE TO THE CARSEAT BEING LOCKED INTO PLACE, HOWEVER WHEN THE CARSEAT WAS REMOVED, I DETERMINED THAT THE 40 SIDE OF THE REAR SEAT WAS NOT LOCKED INTO PLACE, JUST LIKE THE 60 SIDE. NOTHING HAS BEEN DONE TO CORRECT THE FAILURE, DUE TO THE FACT THAT THE CAR IS MOST LIKELY CONSIDERED A TOTAL LOSS. *TR

2008 TOYOTA MATRIX XR....CAR DRIFTS SEVERELY TO THE LEFT AT HIGHWAY SPEEDS...ESPECIALLY WHEN IN THE LEFT LANE. I REALIZE THERE IS A CROWN TO EVERY ROAD, BUT OUR OTHER VEHICLES DO NOT DO THIS ON THE SAME STRETCH OF HIGHWAY IN ANY LANES. TO GIVE AN INDICATION OF THE SEVERITY, AT 65+MPH, THE CAR WOULD BE IN THE MEDIAN WITHIN 2-3 SECONDS WITHOUT THE CONSTANT RIGHTWARD PRESSURE ON THE STEERING WHEEL. I DID NOT NOTICE THE DRIFT ON THE TEST DRIVE AT THE DEALER. FOR WHAT IT'S WORTH, THE NEW ROADWAY NEAR THE DEALER IS NEARLY PERFECTLY FLAT. ALSO, THE CAR DOES NOT SEEM TO DRIFT AS MUCH WITH TWO ADULTS IN THE CAR AS WAS THE CASE DURING THE TEST DRIVE. I NOTICED IT IMMEDIATELY UPON DRIVING THE CAR A LONGER DISTANCE ON OTHER MAJOR HIGHWAYS WITH ONLY MYSELF IN THE CAR. I NOTIFIED THE SALESMAN RIGHT AWAY. I HAVE NOT YET HAD AN ACCIDENT, BUT MUST MAINTAIN CONSTANT RIGHTWARD PRESSURE ON THE STEERING WHEEL...ESPECIALLY ANY TIME I VENTURE INTO THE LEFT LANE. IT DOESN'T TAKE MUCH OF A DISTRACTION TO IMAGINE A SCENARIO WHERE THE CAR DRIFTS INTO THE ONCOMING LANE, OR WORSE, AN ONCOMING CAR. I HAVE TAKEN IT TO DEALER THREE TIMES WITH NO SUCCESS. NOW I AM GETTING THE RUN-AROUND (DEALER FROM WHICH I PURCHASED THE CAR IS TRYING TO PUSH ME OFF ON ANOTHER TOYOTA DEALER WHO DID THE FIRST "WARRANTY" ALIGNMENT WHICH DID NOT RESOLVE THE ISSUE. *TR

2008 TOYOTA MATRIX. CONSUMER STATES PROBLEM WITH DESIGN OR MANUFACTURER FLAW. CONSUMER SEEKS REPAIR COST*TGW WHILE DRIVING, THERE WAS A SUCCESSION OF LOUD NOISES FOLLOWED BY A HUGE BANG. AT THE SAME TIME, THE VEHICLE PULLED TO THE RIGHT AND ROLLED OFF THE ROAD INTO SOME BUSHES BEFORE COMING TO A STOP. WHEN THE CONSUMERS WIFE EXITED THE VEHICLE, SHE DISCOVERED A LONG PIECE OF BLACK PLASTIC A FOOT WIDE LYING BEHIND THE VEHICLE. NOT KNOWING WHAT IT WAS, SHE PLACED IT IN THE BACK OF THE VEHICLE AND DROVE HOME. THE CONSUMER IDENTIFIED THE LARGE PIECE OF PLASTIC AS THE LINING FROM THE RIGHT FRONT WHEEL WELL WHICH HAD BEEN TORN COMPLETELY AWAY AND WAS THEN RUN OVER BY THE VEHICLE. THE CONSUMER ARGUED THAT THE FLIMSY CLIP HOLDING THE LEAD EDGE OF THE LINER TO THE BODY HAD FAILED, WHICH ALLOWED AIR TO GET UNDER THE LINER WHICH PEELED ALL THE WAY OFF AFTER BECOMING ENTANGLED WITH THE TIRE. *JB

SUDDEN ACCELERATION IN 2008 MATRIX AUTOMATIC: FIRST KNOWN FAILURE. CAR BROUGHT NEW IN SEPTEMBER 2007; ODOMETER: 6000 MILES. WHILE DRIVING APPROXIMATELY 35 MPH ON EVEN STRAIGHT SMOOTH ROADWAY, THERE WAS A SUDDEN ACCELERATION TO GREATER THAN 70 MPH. WHEN BRAKES WERE APPLIED, THEY DEPRESSED TO FLOOR WITHOUT ANY EFFECT. CAR CONTINUED TO ACCELERATE RAPIDLY. SHIFTED TO NEUTRAL WITHOUT SUCCESS. CAR SLOWED AFTER BEING PLACED IN REVERSE. COASTED TO A STOP. PLACED GEAR IN 2 AND DROVE SLOWLY HOME - APPROXIMATELY 1/2 MILE. FLOOR MATS WERE NOT NEAR EITHER PEDAL AND WERE KEPT STATIONARY BY HOOKS DESIGNED TO KEEP MATS FROM SHIFTING. CALLED TOYOTA SERVICE DEPARTMENT: TOLD THAT FLOOR MATS WERE THE PROBLEM; TALKED TO SERVICE MANAGERS WHO STATED THAT THE SEQUENCE OF EVENTS DESCRIBED WERE IMPOSSIBLE, NO PROBLEMS WERE KNOWN TO EXIST FOR MATRIX AND GREATER THAN 99% OF SUDDEN ACCELERATION PROBLEMS WERE DUE TO DRIVER ERROR. AFTER A DISCUSSION, THE CAR WAS EVALUATED BY THE SERVICE DEPARTMENT. THE FOLLOWING WAS REPORTED: FLOOR MATS HELD IN PROPER PLACE NO OBJECTS ON FLOOR NORMAL BRAKE PEDAL OPERATION NORMAL ACCELERATOR PEDAL OPERATION HEALTH CHECK - POWERTRAIN, CHASSIS, ELECTRICAL, NETWORK SYSTEMS - OK COMPUTER CODES - NO ABNORMALITIES FOUND NORMAL THROTTLE BODY INSPECTION TIRES WITH NORMAL WEAR & FUNCTION PROBLEM WAS NOT DUPLICATED ON TEST DRIVE. WAS TOLD THAT THE CAR IS FUNCTIONING NORMALLY IN ALL AREAS AND HAS NO PROBLEMS. IMPLIED THAT MY EXPERIENCE WAS A MISPERCEPTION OR MISREPRESENTATION. ASSESSMENT: THERE WAS A SIGNIFICANT MALFUNCTION IN THE MATRIX WHICH COULD HAVE LED TO CRITICAL INJURIES OR LOSS OF LIFE. ONLY DUE TO THE TRAFFIC FLOW AT PRECISELY THAT MOMENT, NO ONE WAS INJURED. THE TOYOTA SERVICE DEPARTMENTS DENIED THAT THE PROBLEM EXISTS. RECOMMENDATION: SUDDEN UNEXPECTED ACCELERATION SHOULD BE INVESTIGATED UNTIL AN ANSWER /SOLUTION IS FOUND. THE FINDINGS SHOULD BE SHARED WITH THE PUBLIC. THE COST FOR REPAIRS SHOULD BE PAID BY TOYOTA. *TR

I NOTICED A CHIRPING NOISE FROM THE ENGINE. MY HUSBAND TOOK THE MATRIX TO A TOYOTA DEALER WHO ADVISED US, UPON INSPECTION THAT THE BOLT THAT HOLDS THE LIFTER ARM HADSHEARED OFF INSIDE THE ENGINE. WE ARE EXTREMELY FORTUNATE THAT THIS DID NOT RESULT IN AN INJURY ACCIDENT WHILST TRAVELING AT HIGHWAY SPEEDS! THE SERVICE MANAGER SAID HE HAD ONLY SEEN THIS HAPPEN BEFORE WHEN A BELT WAS REPLACED. THE ISSUE HAS NOT BEEN RESOLVED SINCE THE DEALER AND TOYOTA SEEM TO FEEL THAT IT IS NOT THEIR PROBLEM. THE DEALER QUOTED $2200+ AND ADVISED THAT IF THEY CANNOT DRILL THE BOLT OUT, THAT THE SHORT BLOCK WOULD NEED TO BE REPLACED. *TR