Owner-reported complaints naming the engine system, filed with NHTSA
Data refreshed
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components. Every record below is an owner-reported complaint about the 2003 Toyota 4Runner submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 98 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
The 25 most recent of 98, in the owner's own words
The frame of the car has been rusting at a significant rate in the last 4 years. Mechanic identified major rust issues that would make the vehicle not safe in case of an accident.
The rust and corrosion underneath the vehicle continually gets worse year after year. The main components of vehicle relating to the engine, powertrain and suspension underneath vehicle are corroded; holes exist in the frame of the truck through out. The frame of truck is rotted due to not being sealed properly during the manufacturing process. Due to the rust and corrosion on the frame of truck, it is impossible to get work done on exhaust and muffler areas. I will send pictures for your reference. This makes driving a safety concern for myself and my son. At this time, I am unable to purchase a new car and do not have money to replace/fix the frame of truck. Inevitably, this problem will get worse and may cause a safety concern for myself and others on the road. I called Toyota on 4/12/22 and was told that there is not a recall for this issue and that any repairs would have to be paid by me. I then proceeded to call the number given to me by the representative to call 800-331-4331 for the Toyota Corporate office. I spoke to Blake who gave me the same answer, there was not a recall on this vehicle for rust/corrosion on the frame of vehicle. At this time, Toyota charges $150 just to check car and unfortunately, I don't have those funds to pay such a fee. I asked Blake if there was a way, Toyota can check without charging a fee and his answer was no. Currently, there is not any warning lights on, but with increased time and pressure of exhaust pipe and muffler will create more problems. I cannot have the exhaust system fixed until the frame of truck is replaced. My car was checked by an independent shop.
TL* THE CONTACT OWNS A 2003 TOYOTA 4RUNNER. THE CONTACT STATED WHILE HAVING ROUTINE MAINTENANCE PERFORMED, SHE WAS INFORMED THAT THERE WAS EXCESSIVE RUST AND HOLES ON THE SUBFRAME. ADDITIONALLY, THE CALIPERS WERE STICKING AND THE OIL PAN WAS RUSTED. THE CONTACT COMPLETED THE REPAIRS. THE VEHICLE WAS TAKEN TO RAMEY TOYOTA (135 FRAZIER DR, PRINCETON, WV 24740, (877) 825-2186) AND DIAGNOSED THAT THE SUBFRAME NEEDED TO BE REPLACED. THE SUBFRAME WAS NOT REPLACED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE 55,000.
TL* THE CONTACT OWNS A 2003 TOYOTA 4RUNNER. WHEN THE CONTACT ATTEMPTED TO START THE VEHICLE, IT WOULD NOT START. THE CONTACT MENTIONED THAT THE HEAD GASKET NEEDED TO BE REMOVED AND RE-INSTALLED IN ORDER TO START THE VEHICLE. ALSO, WHILE DRIVING VARIOUS SPEEDS, THE REAR OF THE VEHICLE SWAYED UNCONTROLLABLY TO THE LEFT AND RIGHT. THE VEHICLE WAS TAKEN TO BIG O TIRES (2245 STATE ST, NEW ALBANY, IN 47150, 812-949-0736) WHERE IT WAS DIAGNOSED THAT THE PASSENGER SIDE CONTROL ARM WAS FRACTURED AND THE DRIVER'S SIDE CONTROL ARM COULD FRACTURE AT ANY MOMENT. THE VEHICLE WAS TOWED TO MCCORMICK MOTOR SPORTS (1041 S 6TH ST, LOUISVILLE, KY 40203, (502) 584-1981) WHERE THE CONTACT WAS INFORMED THAT THE HEAD GASKET WAS CAUSING CYLINDER THREE TO MISFIRE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 217,500.
"TAKATA RECALL". SO I'M NOT UNDERSTANDING A PROBLEM WITH MY TOYOTA 4RUNNER. AS OF YESTERDAY THERE WAS A GREAT AMOUNT OF SMOKE COMING FROM THE AREA OF THE OIL STICK FROM MY ASSUMPTION THE OIL WAS GETTING ON THE CADILLAC CONVERTER. OR SOMETHING THAT WOULD HIT SOMETHING HOT ON THE ENGINE TO CAUSE IT TO SMOKE I'M TRYING TO FIND OUT IF THERE IS A RECALL FOR THAT.
I WAS DRIVING DOWN THE HIGHWAY AFTER GETTING OFF THE INTERSTATE WHEN MY VEHICLE BEGAN TO OVERHEAT. I LUCKILY NOTICED AND PULLED OVER BEFORE INCURRING MORE DAMAGE AND WARPING THE ENGINE HEAD. I HAVE HEARD MULTIPLE TIMES THAT THESE 4.0 V6'S TOYOTA MADE HAVE HEAD GASKET PROBLEMS. AFTER GETTING IT TOWED BACK TO THE MECHANIC ON THANKSGIVING, I WAS TOLD I HAD A BLOWN/LEAKING HEADGASKET. I HAVE NEVER DROVE THIS VEHICLE OVER 3K RPMS AND FIND IT RIDICULOUS IT WOULD FAIL UNDER SUCH GOOD CONDITION. *TR
THIS 2003 TOYOTA 4RUNNER HAS 135,000 MILES ON THE ODOMETER AND THE FRAME AND EXHAUST SYSTEM INCLUDING CATALYTIC CONVERTER ARE COMPLETELY RUSTED OUT AND THE VEHICLE IS NOW UNSAFE TO DRIVE. SOME FRAME COMPONENTS HAVE COMPLETELY RUSTED AND BROKEN OFF FROM THE FRAME I.E. TOW HOOKS, EXHAUST AND ENGINE MOUNTS. THE FRAME IS ONLY HELD ON TO THE BODY BY THE SHOCK ABSORBERS. THE VEHICLE CAN NO LONGER BE DRIVEN SAFELY. THE COST TO REPAIR THIS DAMAGE WOULD BE PROHIBITIVE AND I BELIEVE THAT THIS ISSUE NEEDS TO BE ADDRESSED BY TOYOTA. I PURCHASED THIS VEHICLE IN GOOD FAITH AND TRUSTED THAT TOYOTA QUALITY WOULD LAST. PLEASE ADVISE ANY POSSIBLE RECOURSE. THANK YOU *TR
I BOUGHT MY 2003 TOYOTA 4RUNNER LESS THAN A YEAR AGO FROM AN AUTO GROUP (TOYOTA, HONDA, ECT) AND HAD THEM PERFORM A SAFETY INSPECTION. SINCE IT WAS USED I KNEW THERE WOULD BE SOME ISSUES, THE ONLY PROBLEM IT HAD WAS THE RECOMMENDED SERVICE WASN'T COMPLETED AT 90K MILES (TIMING BELT, WATER PUMP, ECT). I WORKED THAT INTO THE DEAL AN WAS ON MY WAY. AFTER DEPARTING THE U.S. AND SHIPPING MY CAR TO HAWAII, THE INSPECTORS HERE FOUND A LOT OF RUST ON THE FRAME AND SAID IT COULD BE AN ISSUE GETTING AN APPROVED SAFETY INSPECTION (REQUIRED FOR REGISTERING THE CAR IN HAWAII). THEY SAID IT ISN'T SEVERE NOW, BUT CAN BE LIVING IN THIS STATE AS IT IS VERY RUSTED AND WILL CONTINUE TO DO SO IN SUCH A HUMID ENVIRONMENT. THEY ALSO SAID THAT TACOMAS FOR THAT YEAR HAD A RECALL DUE TO EXCESSIVE FRAME RUST (SIMILAR IF NOT THE SAME FRAMES) BUT 4RUNNERS DO NOT, SO THEY RECOMMENDED I TALK TO TOYOTA ABOUT IT. I CALLED THE TOYOTA SERVICE CENTER HERE AND THEY SAID THERE IS NO RECALL AND IF I WANTED THE FRAME FIXED OR REPLACED, IT'D HAVE TO BE AT MY EXPENSE. TOYOTA'S ARE FANTASTIC VEHICLES, I JUST HOPE THIS COMMENT AIDS IN THEIR DECISION TO APPROVE A RECALL ON 4RUNNER'S FRAMES DUE TO RUST LIKE THE OTHER MAKES FOR THE SAME YEAR. *TR
THE ENGINE, VSC TRAC AND VSC WARNING INDICATORS ILLUMINATED CONTINUOUSLY ON THE INSTRUMENT PANEL. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER. THE ENGINE 02 SENSORS WERE FOUND TO BE DEFECTIVE. THE MANUFACTURE WILL NOT REPLACE OR REPLACE SINCE THERE ARE NO ADVISORIES ON THE PART. THERE IS A HIGH RISK THE ENGINE MAY UNDER PERFORM WHICH MAY CAUSE LACK OF CONTROL AND A POTENTIAL ACCIDENT WHILE DRIVING. LEADING TO INJURY. *TR
WHILE IN PROCESS OF REPLACING SERPENTINE BELT AND IDLER PULLEYS ON ENGINE, I NOTICED (AFTER REMOVING LOWER ENGINE SHIELD UNDER VEHICLE) SIGNIFICANT RUST DAMAGE TO FRONT FRAME SEGMENT UNDER RADIATOR SUPPORT. THE RIGHT SIDE TOW HOOK AND CORNER OF FRAME IT WAS MOUNTED TO FELL OFF IN MY HAND WHEN I TOUCHED IT. UPON FURTHER INSPECTION, THERE ARE OTHER PARTS OF VEHICLE FRAME WITH RUST DAMAGE, THOUGH NONE APPEAR TO BE AS SEVERE AS AREA OF FRAME UNDERNEATH RADIATOR. THIS PORTION OF FRAME APPEARS TO CONNECT THE TWO SIDE FRAME RAILS TOGETHER. *TR
TL-THE CONTACT OWNS A 2003 TOYOTA 4RUNNER. THE CONTACT STATED WHILE DRIVING VARIOUS SPEEDS THE ENGINE, VSC TRAC AND VSC WARNING INDICATORS ILLUMINATED CONTINUOUSLY ON THE INSTRUMENT PANEL. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FIVE TIMES AND TWICE TO AN INDEPENDENT MECHANIC. THE ENGINE 02 SENSORS HAD BEEN REPLACED EVEN TIMES. THE MANUFACTURER WAS NOT NOTIFIED OF THE PROBLEM. THE FAILURE MILEAGE AND VIN WERE UNAVAILABLE. JS
TL* THE CONTACT OWNS A 2003 TOYOTA 4RUNNER. THE CONTACT STATED THAT WHEN DRIVING ABOVE 25 MPH, THE CHECK ENGINE LIGHT WOULD ILLUMINATE ON THE INSTRUMENT PANEL. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER WHERE THEY WERE UNABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 20,000 AND THE CURRENT MILEAGE WAS 30,000.
TL* THE CONTACT OWNS A 2003 TOYOTA 4RUNNER. THE CONTACT STATED THAT THE VSC TRACKING LIGHT ILLUMINATED, CAUSING THE VEHICLE TO VIOLENTLY JERK WHEN APPLYING PRESSURE TO THE BRAKES. NEITHER THE DEALER NOR MANUFACTURER HAD BEEN NOTIFIED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE CURRENT AND FAILURE MILEAGES WERE 100,000. THE VIN WAS UNAVAILABLE.
THE CHECK ENGINE LIGHT CAME ON AND THE VSC TRAC TURNED OFF, THE DAY AFTER THE LIGHT CAME ON AND THE TRACTION TURNED OFF...THE TOYOTA 2003 4RUNNER FLIPPED OVER. THE VSC TRACTION SHOULD NOT BE TURNED OFF WHEN A CHECK ENGINE LIGHT COMES ON BECAUSE IT PROVIDES THE NECESSARY STABILITY OF THE VEHICLE THAT A SUV NEEDS NO MATTER WHAT IS WRONG WITH THE CAR. THE CAR IS NOW TOTALED AND ONE PASSENGER STILL SUFFERING FROM INJURIES FROM THE ACCIDENT. *TR
BOUGHT A 2003 TOYOTA 4RUNNER V6 4WD 2 1/2 YEARS AGO AS A TOYOTA CERTIFIED USED VEHICLE..WITHIN A YEAR I NEEDED A NEW SERPENTINE BELT DUE TO EXCESSIVE NOISE AT START UP. THE DEALER TOLD ME THERE WAS A TSB FOR THIS AND TO BRING THE CAR BACK IF I HAD FURTHER ISSUES. THE NOISE CAME BACK BUT WAS IRREGULAR, IT WOULD COME AT START UP EVERY DAY FOR A COUPLE WEEKS AND THEN DISAPPEAR FOR ANOTHER FEW WEEKS. THE NOISE GOT LOUDER AND SOUNDED SOMEWHAT DIFFERENT A COUPLE WEEKS AGO. BROUGHT IT TO THE DEALER AND THEY REPLACED THE IDLER PULLEY ON FRIDAY 07/16/10. IT SOUNDED LOUD AGAIN AT START UP AFTER I PICKED UP THE VEHICLE BUT THE NOISE EVENTUALLY WENT AWAY. HOWEVER MY SERPENTINE BELT ACTUALLY RIPPED LESS THAN A WEEK LATER (07/21/10) WHILE I WAS DRIVING 45MPH ON A CURVY ROAD. I FIRST LOST MY AC, QUICKLY FOLLOWED BY MY POWER STEERING...SOMEHOW MANAGED TO PULL OVER BUT BY THEN SMOKE WAS COMING FROM UNDERNEATH THE HOOD DUE TO THE FACT THAT IN THE RIPPING PROCESS THE BELT BROKE A COOLANT HOSE. I HAVE BEEN WITHOUT A VEHICLE FOR 5 DAYS NOW AND AM WAITING ON THE DEALER TO GET A NEW HOSE SO THAT THEY CAN ACTUALLY RUN THE CAR AND MAKE SURE THE PULLEYS ARE ALL OK. HOWEVER SO FAR THEY'RE TELLING ME THAT ALL THE PULLEYS ARE FINE AND I AM HAVING TO FIGHT WITH THEM TO GET THEM TO DO THE RECOMMENDED FIX TO THE TSB EG012-13. A NOISE AT START IS ONE THING, BUT A YEAR AND 1/2 OLD BELT ACTUALLY RIPPING IS NOT NORMAL! I WAS FORTUNATE TO COME OUT OF THIS UNHARMED AND NOT DAMAGE MY CAR OR SOMEBODY ELSE'S. *TR
TOYOTA 4-RUNNER 2003 SIX CYLINDER. EXCESSIVE SULFUR DIOXIDE ODOR. NO EVENTS LEADING UP TO FAILURE. SPORADIC. DEALERSHIPS GAVE ME A HARD TIME, WANTED $150.00 TO RUN TEST EVEN THOUGH TOYOTA HEADQUARTERS INFORMED ME THAT THE DEALER SHOULD JUST REPLACE PARTS, SO I NEVER HAVE HAD IT FIXED BUT I AM CONCERNED. I CHANGED GAS STATIONS NUMEROUS TIMES AND STILL RECEIVE THE ODOR. ODOR COMES AND GOES AND CAN BE STRONG AT TIMES ESPECIALLY IN COLD MONTHS. CONCERNS ARE THAT IT WILL BECOME WORSE AND THE SMELL IS TOXIC. *TR
2003 TOYOTA 4RUNNER SPORT ED, 6 CYL.- AT 100,400 MILES, BOTH MY CATALYTIC CONVERTERS WENT OUT. ALSO THE CHECK ENGINE LIGHT GOES ON WHICH DISENGAGES THE VEHICLE SKID CONTROL, SO I HEAR. REPAIRS ARE COSTLY. CAN'T SMOG CAR ON THE FIRST TIME CAR EVER NEEDS TO GET SMOGGED. SEEMS LIKE A RECALL ISSUE TO ME? *TR
MODEL : 2003 TOYOTA 4 RUNNER V8 ISSUE : AUTOMATIC ACCELERATION WHILE A/C ON HOW TO DUPLICATE THE ISSUE : OPTION 1] WHILE THE ENGINE IS RUNNING AND THE VEHICLE IS IN DRIVE WITH BRAKES DEPRESSED TURN THE A/C "ON", THE VEHICLE WOULD TRY TO SUDDENLY MOVE FORWARD. THE TACHOMETER ALSO SHOWS HIGHER READINGS. OPTION 2] TURN YOUR A/C OFF DRIVE FOR A WHILE AND THEN TURN YOUR A/C ON, THE MOMENT YOU TURN YOUR A/C ON THE VEHICLE ACCELERATES ON ITS OWN FOR A WHILE. THIS PROBLEM IS MAGNIFIED ESPECIALLY IN SUMMER AND HOTTER CLIMATES AND DOES NOT FAIL TO OCCUR IN SUMMER. *TR
MY VEHICLE SEEMED TO BECOME LOUDER WHEN IDLING OVER THE PAST 2 YEARS THAT I'VE OWNED IT. A COUPLE MONTHS AGO I NOTICED IT BEING NOTICEABLY MUCH LOUDER. THE NOISE COULD BE HEARD WHILE IDLING (RED LIGHT, DRIVE THRUS...) AND WOULD BECOME LOUDER WITH ACCELERATION UP TO ABOUT 40MPH. THIS WAS A RATTLING NOISE LOCATED ON THE DRIVER'S SIDE OF THE UNDERBODY, SOMEWHERE BETWEEN THE DRIVER'S AND THE PASSENGER'S SEATS. IT SOUNDED LIKE LOUD HEAVY VIBRATIONS, METAL ON METAL. I ASKED THE TOYOTA DEALERSHIP SERVICE DEPARTMENT TO CHECK OUT AND THEY FOUND THAT THE HEATSHIELD WAS SERIOUSLY RUSTED. THEY HAD TO ORDER THE PART IN ORDER TO REPLACE IT BUT SAID IT WAS RUSTED SO BADLY THAT THEY HAD TO REMOVE WHAT WAS LEFT OF THE ORIGINAL HEATSHIELD TO PREVENT FURTHER DAMAGE TO OTHER COMPONENTS. ONCE THE NEW PART WAS RECEIVED THEY WERE ABLE TO PUT ON THE NEW HEATSHIELD. *TR
I OWN A 2003 TOYOTA 4RUNNER AND HAVE BEEN EXPERIENCING A SULFUR/ROTTEN EGG SMELL SINCE I GOT IT. IT IS INTERMITTENT AND SEEMS TO OCCUR MOST FREQUENTLY UPON ACCELERATION. THERE HAVE BEEN TIMES WHILE DRIVING THAT I GET VERY DIZZY. AFTER RESEARCHING I FOUND THERE A QUITE A FEW COMPLAINTS ABOUT THIS VERY PROBLEM. IT SEEMS ALONG WITH THE SULFUR DIOXIDE THERE IS CARBON MONOXIDE INSIDE THE CABIN, REGARDLESS IF THE WINDOWS ARE UP OR DOWN. TOYOTA'S RESPONSE IS THAT THIS IS DUE TO BAD GAS. I LIKE MY 4RUNNER BUT THERE IS NO WAY I CAN DRIVE IT KNOWING THAT NOT ONLY ME, BUT MY SON ALSO ARE BEING POISONED. TOYOTA MUST BE HELD ACCOUNTABLE AND FIX THIS IMMEDIATELY BEFORE SOMEONE GETS SERIOUSLY HURT!!!! *TR
CHIRP NOISE FROM ENGINE AREA ON COLD START--THIS HAS REPEATED 5 TIMES SINCE VEHICLE PURCHASE--EACH TIME THE LOCAL TOYOTA DEALER HAS REPAIRED UNDER WARRANTY--REPLACED TENSIONER AND BELT--CHIRP SOUND RETURNS REPEATEDLY AFTER APPROX 6 MTHS OPERATION. *TR
DT*: THE CONTACT STATED WHILE DRIVING 40 MPH UPHILL, A STRONG ODOR WAS NOTICED. THERE WERE NO WARNING LIGHTS ILLUMINATED PRIOR TO THE INCIDENT. THE DEALERSHIP WAS CONTACTED, WHO DETERMINED THE CATALYTIC CONVERTER WAS PRODUCING THE ODOR. THE EXTENDED WARRANTY COVERED THE REPLACEMENT. ALSO, THE CONTACT WAS ALERTED BY AN INDEPENDENT MECHANIC ABOUT THE FRONT BRAKES. THE MECHANIC MACHINED THE FRONT ROTORS AND INSTALLED NEW PADS. AS A RESULT OF THE BRAKES REPAIR, THE PEDAL WAS TOO LOW WHEN DEPRESSED. THE BRAKES WERE RECHECKED AND THE MECHANIC INFORMED ALL THE BRAKE STANDARDS WERE CORRECT. THE CONTACT ASSUMED THIS WAS A MANUFACTURER DEFECT. THE DEALERSHIP HAD NOT BEEN CONTACTED YET FOR THE BRAKE PROBLEM.
FOUL SMELLING EXHAUST - AMMONIA SMELL - VERY STRONG ON ACCELERATIONS UPHILL OR FREEWAY ON RAMPS. *JB
EXHAUST SYSTEM EMITS A SULPHUR SMELL THAT COMES INTO THE SEATING AREA
I BOUGHT A NEW TOYATO 4 RUNNER AND THE VEHICLE SMELL CONSTANTLY. I SPOKE WITH TOYOTA AND THEY ASK ME TO CHANGE MY GAS TYPE TO A MORE EXPENSIVE ONE. THIS IS RIDICULOUS THAT I HAVE TO BE DRIVING MY FAMILY AROUND IN A SMELLY TRUCK. HELP
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
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