THE COOLANT KEPT LEAKING ON MY HIGHLANDER 2003 4 CYLINDER FOR LAST FEW MONTHS. THE TEMPERATURE GAUGE ONE DAY SHOWED HEATING OF ENGINE. TOOK IT TO TOYOTA , THEY SAID IT IS BLOWN HEAD GASKET. DEMANDED $3500. *TR
2003 Toyota Highlander
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2003 Toyota Highlander do not stand out strongly from the model-year median of 186.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Highlander years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
213 reports with mileage · 45 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine And Engine Cooling. Review the 46 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine. Review the 41 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Visibility. Review the 31 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
258 reports2003 TOYOTA HIGHLANDER 2.4L 4-CYLINDER ENGINE, 108,000 MILES, DEVELOPED COOLANT LEAK ON THE BACK SIDE OF THE TOP OF THE ENGINE, ADJACENT TO AN INSULATOR PAD AT THE BACK OF THE ENGINE BLOCK. THE BACK 3 HEAD BOLTS WERE STRIPPED, ALLOWING COOLANT TO ALSO LEAK INTO THE ENGINE. THE TOYOTA DEALER SAYS THAT THE SHORT BLOCK OR ENTIRE EN…
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2003 TOYOTA HIGHLANDER 2.4L 4-CYLINDER ENGINE, 108,000 MILES, DEVELOPED COOLANT LEAK ON THE BACK SIDE OF THE TOP OF THE ENGINE, ADJACENT TO AN INSULATOR PAD AT THE BACK OF THE ENGINE BLOCK. THE BACK 3 HEAD BOLTS WERE STRIPPED, ALLOWING COOLANT TO ALSO LEAK INTO THE ENGINE. THE TOYOTA DEALER SAYS THAT THE SHORT BLOCK OR ENTIRE ENGINE MUST BE REPLACED, WITH NO OTHER OPTION. THE HEAD HAD NEVER BEEN OFF SINCE ORIGINAL FACTORY MANUFACTURE/ASSEMBLY. BASED ON THE FREQUENCY OF IDENTICAL ENGINE FAILURES, FAULTY ASSEMBLY AND/OR DESIGN ASSURES EVENTUAL FAILURE OF THE ENGINE. *TR
2003 TOYOTA HIGHLANDER HAS HEAD BOLTS STRIPPED FROM BLOCK, CAUSING FLUID TO SLOWLY LEAK FROM ENGINE AND OVERHEAT. FIRST SYMPTOM IS AC BLOWS HOT AIR. MOST FOLKS WHO EXPERIENCE THIS BURN UP THE ENGINE, BUT I WAS FORTUNATE AND WAS ABLE TO HAVE IT REPAIRED AT A COST OF $2750.00 !!!!! THIS IS A CLEAR DEFECT, HEAD BOLTS DO NOT SIMPLY…
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2003 TOYOTA HIGHLANDER HAS HEAD BOLTS STRIPPED FROM BLOCK, CAUSING FLUID TO SLOWLY LEAK FROM ENGINE AND OVERHEAT. FIRST SYMPTOM IS AC BLOWS HOT AIR. MOST FOLKS WHO EXPERIENCE THIS BURN UP THE ENGINE, BUT I WAS FORTUNATE AND WAS ABLE TO HAVE IT REPAIRED AT A COST OF $2750.00 !!!!! THIS IS A CLEAR DEFECT, HEAD BOLTS DO NOT SIMPLY GET STRIPPED FROM A BLOCK. *TR
VSC (VEHICLE STABILITY CONTROL, INCLUDING ABS) & CHECK ENGINE LIGHTS HAVE BEEN TURNING ON INTERMITTENTLY ALMOST FROM THE START OF OUR OWNERSHIP OF THIS 2003 TOYOTA HIGHLANDER V6 AWD LIMITED AND AFTER COSTLY REPAIRS AT THE DEALER THEY ARE STILL ON CONTINUOUSLY. LAST TIME (MAY-JUNE 2010) DEALER REPLACED FRONT BRAKE PADS & ROT…
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VSC (VEHICLE STABILITY CONTROL, INCLUDING ABS) & CHECK ENGINE LIGHTS HAVE BEEN TURNING ON INTERMITTENTLY ALMOST FROM THE START OF OUR OWNERSHIP OF THIS 2003 TOYOTA HIGHLANDER V6 AWD LIMITED AND AFTER COSTLY REPAIRS AT THE DEALER THEY ARE STILL ON CONTINUOUSLY. LAST TIME (MAY-JUNE 2010) DEALER REPLACED FRONT BRAKE PADS & ROTORS; REAR AXLES AND SPEED SENSORS AND NOW WANTS TO REPLACE ADDITIONAL COMPONENTS THAT DO NOT APPEAR CONNECTED. FIRST TIME CAR WAS SERVICED UNDER WARRANTY AT DEALER AND THAT TOO DID NOT LAST FOR LONG. TOYOTA CAR SATISFACTION CENTER HAS NOT BEEN HELPFULL. CASE # [XXX]. FORD HAS ISSUED A RECALL FOR SIMILAR ISSUE RECENTLY: 10S13 FOR REAR AXLE BREAKAGE IN THE SNOW BELT! TOYOTA REFUSES TO ACKNOWLEDGE ISSUE AND INTERNET HAS MANY DISCUSSIONS ON TOPIC. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
TL-* THE CONTACT OWNS A 2003 TOYOTA HIGHLANDER. WHILE TRAVELING 55 MPH, THE CONTACT NOTICED THAT THE TEMPERATURE GAUGE WAS INDICATING THAT THE VEHICLE WAS RUNNING HOT. AFTER EXAMINING THE VEHICLE, THE CONTACT DISCOVERED COOLANT LEAKING FROM THE REAR OF THE CYLINDER BLOCK. THE VEHICLE WAS TAKEN TO A LOCAL MECHANIC WHERE Z TAPS WE…
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TL-* THE CONTACT OWNS A 2003 TOYOTA HIGHLANDER. WHILE TRAVELING 55 MPH, THE CONTACT NOTICED THAT THE TEMPERATURE GAUGE WAS INDICATING THAT THE VEHICLE WAS RUNNING HOT. AFTER EXAMINING THE VEHICLE, THE CONTACT DISCOVERED COOLANT LEAKING FROM THE REAR OF THE CYLINDER BLOCK. THE VEHICLE WAS TAKEN TO A LOCAL MECHANIC WHERE Z TAPS WERE INSTALLED INSIDE OF THE ENGINE. THE CURRENT AND FAILURE MILEAGE WAS 155,000.
2003 4 CYLINDER TOYOTA HIGHLANDER. COOLANT LEAK AND SUBSEQUENT NEED FOR A NEW REPLACEMENT ENGINE DUE TO THE DEFECT OF 3 REAR ENGINE SHORT BLOCK SCREWS/THREADS. HAD LESS THAN 85K MILES ON VEHICLE, WHEN FOUND A COOLANT LEAK UNDERNEATH ENGINE BLOCK OF VEHICLE IN GARAGE AFTER HAVING NO ISSUES PRIOR WITH ENGINE, RADIATOR OR ANY AS…
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2003 4 CYLINDER TOYOTA HIGHLANDER. COOLANT LEAK AND SUBSEQUENT NEED FOR A NEW REPLACEMENT ENGINE DUE TO THE DEFECT OF 3 REAR ENGINE SHORT BLOCK SCREWS/THREADS. HAD LESS THAN 85K MILES ON VEHICLE, WHEN FOUND A COOLANT LEAK UNDERNEATH ENGINE BLOCK OF VEHICLE IN GARAGE AFTER HAVING NO ISSUES PRIOR WITH ENGINE, RADIATOR OR ANY ASSOCIATED ACCESSORIES TO THE COOLANT SYSTEM/ENGINE SYSTEM OF VEHICLE. TOOK TO A TOYOTA DEALER PRIOR TO ANY OVERHEATING OR VEHICLE OPERATION FAILURES OR RADIATOR FAILURE. TOYOTA DEALER PULLED ENGINE MANIFOLD AND COVER OFF TO INVESTIGATE AND FOUND THAT WHEN THEY PULLED THE THREE SCREWS THAT CONNECT THE ENGINE COVER THAT COVER THE HEADS/CYLINDERS, THE THREADS ASSOCIATED WITH THE SCREWS CAME WITH THEM. THE ONLY FIX PER DEALERSHIP DETERMINED TO BE A BRAND NEW SHORT ENGINE BLOCK AND ACCESSORY REPLACEMENT FOR $6,470. DATE ON THIS IS AUGUST/2010. HAVE ALL PAST SERVICE HISTORY OIL CHANGES/TRANSMISSION CHANGES, RADIATOR CHANGES, WATER PUMP SERVICE, ETC FROM 0 MILES TO CURRENT. TOLD THAT THE SCREWS WERE NEVER SPRAYED AND SEALED CORRECTLY, THUS CORRODED INTO THE THREADS AND CAUSED FAILURE WITH BOTH ITEMS. VERY UNHAPPY THAT AN ENGINE IS GOING TO BE PAID FOR AND REPLACED BY CONSUMER ON AN OBVIOUS MANUFACTURER ERROR. MORE AND MORE OF THESE SPECIFIC ISSUES WILL ARISE WITH TIME ON THESE 4 CYLINDER EARLY 2000 TOYOTA HIGHLANDERS. THEY WILL NEED TO RELIEVE THE CONSUMER OF A FULL PAYMENT OF A NEW ENGINE OR BURDEN THEMSELVES ON LOSING EVEN MORE LOYAL TOYOTA CONSUMERS. ----TOYOTA ONLY CONSUMER SINCE 1994.....TILL NOW!!!! *TR
SUNDAY 8/1/10 THE DRIVERS' SIDE VISOR IN OUR 2003 TOYOTA HIGHLANDER WAS FINE. MONDAY 8/2/10 WHEN ATTEMPTING TO POSITION THE VISOR IT WOULD FLOP DOWN AND HANG IN A VERTICAL POSITION OBSTRUCTING THE DRIVERS VIEW OF THE ROAD, YOU COULD NOT BEND IT BACK AGAINST THE WINDSHIELD. IT BLOCKS THE DRIVER'S VIEW MAKING IT UNUSABLE AND UNS…
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SUNDAY 8/1/10 THE DRIVERS' SIDE VISOR IN OUR 2003 TOYOTA HIGHLANDER WAS FINE. MONDAY 8/2/10 WHEN ATTEMPTING TO POSITION THE VISOR IT WOULD FLOP DOWN AND HANG IN A VERTICAL POSITION OBSTRUCTING THE DRIVERS VIEW OF THE ROAD, YOU COULD NOT BEND IT BACK AGAINST THE WINDSHIELD. IT BLOCKS THE DRIVER'S VIEW MAKING IT UNUSABLE AND UNSAFE. I WENT TO THE TOYOTA DEALER TO HAVE IT REPAIRED. THE DEALER CLAIMED THAT IT COULD NOT BE REPAIRED AND THAT A REPLACEMENT WOULD COST OVER $700 DOLLARS. THE ATTACHMENT IS WHERE THE PROBLEM IS. THEY CLAIMED THEY COULDN'T FIX IT. THIS IS A CLEAR SAFETY ISSUE AND I FEEL THAT TOYOTA SHOULD BE RESPONSIBLE FOR ITS REPAIR. *TR
TL* THE CONTACT OWNS A 2003 TOYOTA HIGHLANDER. WHILE ATTEMPTING A RIGHT TURN AT APPROXIMATELY 5 MPH, THE VEHICLE ABNORMALLY ACCELERATED AND CRASHED INTO ANOTHER VEHICLE. THERE WERE NO INJURIES. A POLICE REPORT WAS AVAILABLE. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER WHERE THEY WERE UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE…
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TL* THE CONTACT OWNS A 2003 TOYOTA HIGHLANDER. WHILE ATTEMPTING A RIGHT TURN AT APPROXIMATELY 5 MPH, THE VEHICLE ABNORMALLY ACCELERATED AND CRASHED INTO ANOTHER VEHICLE. THERE WERE NO INJURIES. A POLICE REPORT WAS AVAILABLE. THE VEHICLE WAS TOWED TO AN AUTHORIZED DEALER WHERE THEY WERE UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGES WERE 95,000.
TL*THE CONTACT OWNS A 2003 TOYOTA HIGHLANDER. WHILE DRIVING 50 MPH, THE ACCELERATOR PEDAL BECAME STUCK TO THE FLOORBOARD IN THE OPEN THROTTLE POSITION. THE VEHICLE PROCEEDED TO ACCELERATE WITHOUT DRIVER INTENT. THE CONTACT WAS ABLE TO STOP THE VEHICLE BY TURNING IT OFF. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING…
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TL*THE CONTACT OWNS A 2003 TOYOTA HIGHLANDER. WHILE DRIVING 50 MPH, THE ACCELERATOR PEDAL BECAME STUCK TO THE FLOORBOARD IN THE OPEN THROTTLE POSITION. THE VEHICLE PROCEEDED TO ACCELERATE WITHOUT DRIVER INTENT. THE CONTACT WAS ABLE TO STOP THE VEHICLE BY TURNING IT OFF. THE VEHICLE WAS TAKEN TO THE DEALER FOR DIAGNOSTIC TESTING. THE CURRENT AND FAILURE MILEAGES WERE 86,000.
I HAVE A 2003 TOYOTA HIGHLANDER WITH ONLY 97,000 MILES THAT KEEPS "OVER HEATING". I HAVE REPLACED EVERYTHING UNDER THE HOOD EXCEPT THE ENGINE. THIS PROBLEM STARTED AROUND NOV. 2009. I HAVE READ OTHER BLOGS THAT HAVE THE SAME COMPLAINT AND IT APPEARS TO BE THE "BOLTS ON THE ENGINE ARE STRIPPED/DEFECTED" AND ALLOWS THE COOLANT…
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I HAVE A 2003 TOYOTA HIGHLANDER WITH ONLY 97,000 MILES THAT KEEPS "OVER HEATING". I HAVE REPLACED EVERYTHING UNDER THE HOOD EXCEPT THE ENGINE. THIS PROBLEM STARTED AROUND NOV. 2009. I HAVE READ OTHER BLOGS THAT HAVE THE SAME COMPLAINT AND IT APPEARS TO BE THE "BOLTS ON THE ENGINE ARE STRIPPED/DEFECTED" AND ALLOWS THE COOLANT TO LEAK OUT CAUSING OVERHEATING. ONE BLOG I READ STATED HE HAD THE "BLOTS" REPLACED AND THE NEW BOLTS ARE EXPANDING AND DOING THE SAME THING (OVER HEATING) AGAIN! I HAVE CALLED SEVERAL DEALERS AND SO FAR NO RECALL FROM TOYOTA TO FIX THIS PROBLEM, ALTHOUGH ONE DEALER SAID THERE IS A MEMO FROM TOYOTA REGARDING THIS PROBLEM, BUT NO RECALL! PLEASE HELP, I AM A SENIOR ON A FIX INCOME AND CAN NOT AFFORD THE COST OF A NEW ENGINE. I HOPE YOU CAN HELP ALL OF US WITH THIS PROBLEM.....THANK YOU. *TR
Official recalls
204V181000 · Latches/locks/linkages:doors:latch
Apr 15, 2004
CERTAIN SPORT UTILITY VEHICLES HAVE A CHILD PROTECTION LOCK (CPL) SYSTEM ON BOTH OF THE REAR SIDE DOORS. WHEN AN OPERATOR OF THE VEHICLE CLOSES THE DOOR VERY HARD WITH THE CPL LEVER SET TO THE LOCK POSITION, THERE IS A POSSIBILITY THAT THE LEVER MAY CONTACT THE BODY PANEL, CAUSING THE CPL LEVER TO MOVE INTO THE UNLOCK POSITION.
Consequence & remedy
Consequence: THIS CONDITION COULD ALLOW THE DOOR TO BE OPENED WITH THE INSIDE WHILE THE OPERATOR BELIEVES THAT THE CPL WAS ACTIVATED. IF THE DOOR WERE OPENED FROM THE INSIDE WHILE THE VEHICLE WAS IN MOTION, AN OCCUPANT COULD FALL OUT AND BE INJURED.
Remedy: DEALERS WILL SHORTEN THE CPL LEVER. OWNER NOTIFICATION BEGAN MAY 7, 2004. OWNERS SHOULD CONTACT TOYOTA AT 1-800-331-4331.
02V339000 · Wheels
Dec 17, 2002
ON CERTAIN SPORT UTILITY VEHICLES EQUIPPED WITH FIVE FACTORY ALLOY WHEELS (MODEL 6934 AND 6936), WITH FACTORY LLAT, AND WITH PORT INSTALLED WR4, FOUR ALLOY WHEEL UPGRADE PROCESSED AT THE JACKSONVILLE, FLORIDA PORT AND DISTRIBUTED BY SOUTHEAST TOYOTA DISTRIBUTORS IN THE STATES OF ALABAMA, FLORIDA, GEORGIA, NORTH AND SOUTH CAROLINA, WHEN THE VEHICLES WERE PROCESSED AT THE PORT, AN ALLOY TIRE/WHEEL UPGRADE WAS INSTALLED. THE UPGRADE INCLUDED 4 ALLOY WHEELS. THE ORIGINAL SPARE TIRE/ALLOY WHEEL WAS NOT CHANGED. THE SPARE TIRE REQUIRES THE USE OF A DIFFERENT STYLE OF WHEEL NUT TO ATTACH IT TO THE VEHICLE.
Consequence & remedy
Consequence: IF THE SPARE TIRE/WHEEL IS INSTALLED ON THE VEHICLE USING THE WHEEL NUTS PROVIDED FOR THE UPGRADE ALLOY WHEEL, DAMAGE TO THE WHEEL COULD RESULT AND COULD EVENTUALLY LEAD TO A LOOSE WHEEL.
Remedy: OWNERS WILL BE PROVIDED WITH DIFFERENT STYLE LUG NUTS, A WARNING LABEL FOR THE SPARE RE/ALLOY WHEEL, AND AN OWNER'S MANUAL ADDENDUM.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.
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