There are 8 owner-reported engine complaints for the 2003 Toyota Tundrain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
FRAME AND REAR END BANJO HOUSING ROTTED TO THE POINT WHERE GEAR OIL FROM REAR END LEAKED OUT ONTO THE ROAD. HAD TO HAVE VEHICLE TOWED TO GARAGE TO MAKE TEMPORARY REPAIRS. IN ADDITION, FRAME IS DISINTEGRATED WITH PIECES FALLING TO THE GROUND. TAKEN TO AN INDEPENDENT GARAGE AND WAS TOLD TO TAKE TRUCK TO TOYOTA AND BOTH THE REAR END ASSEMBLY AND FRAME SHOULD BE REPLACED. GARAGE, STEWART'S OF GEORGETOWN, MA., STATES METAL OF FRAME HAS DETERIORATED TO THE POINT WHERE YOU COULD POKE HOLES IN IT WITH A SCREW DRIVER. FRAME EXAMINED ON AUGUST 6, 2011 AFTER PIECES OF FRAME FOUND UNDER THE TRUCK AFTER LABOR DAY WEEKEND. TRUCK HAS 40,700 MILES ON THE ODOMETER AND USED TO DELIVER AND PICK UP SUPPLIES FOR PROPERTY OWNED. THE CONSUMER TO DATE, HE HAS BEEN UNABLE TO LOCATE A USABLE REAR END ASSEMBLY. THE CONSUMER BELIEVE THE FAILURE WAS DIRECTLY RELATED TO THE USE OF REPROCESSED METAL IN THE MANUFACTURING, TOGETHER WITH THE FAILURE TO PROPERLY TREAT EXPOSED METAL PARTS WITH CORROSION RESISTANT COMPOUNDS. THE CONSUMER STATED AFTER THE VEHICLE WAS RETURNED TO HIM. THE CHECK ENGINE LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP WHERE IT WAS NECESSARY TO REPLACE THE OXYGEN SENSOR THAT HAD BEEN PREVIOUSLY REPLACED IN AUGUST 2007. UPDATED IVOQ 12/01/11 *TR
TL*THE CONTACT OWNS A 2003 TOYOTA TUNDRA. WHILE EXITING HIS HOME, HE NOTICED THAT HIS VEHICLES HOOD WAS ON FIRE AND THAT THERE WERE DRIPPING FLAMES FALLING FROM THE PASSENGER SIDE TIRE. THE VEHICLE HAS NOT BEEN DIAGNOSED BY THE DEALER AND THE CONTACT DID NOT NOTICE ANY WARNINGS PRIOR TO THE FAILURE. THE FIRE WAS EXTINGUISHED AND THERE WERE NO INJURIES. THE CURRENT AND FAILURE MILEAGE WAS 71000.
NARRATIVE: 1. NORMAL DRIVING 2. CRACKED EXHAUST FLANGE(S). 3. NOTHING, YET. *TR
I BOUGHT MY 2003 TUNDRA NEW.GOT 15,000 MILES ON IT WHEN THE ENGINE LIGHT SHOW.THE DEALER THEY FIXED IT AND AGAIN NOW AT 49,000 MILES.
DT*: THE CONTACT STATED THE CATALYTIC CONVERTER IS SPEWING SULFUR DIOXIDE WHEN THE ENGINE IS RUNNING. THE VEHICLE WAS TAKEN TO THE DEALERSHIP FOR INSPECTION, BUT COULD NOT BE REPAIRED BECAUSE THE DEALER DOES NOT HAVE AN UPDATED CONVERTER. THE DEALER COULD ONLY USE THE SAME TYPE OF CATALYTIC CONVERTER WHICH THEY DETERMINED WOULD HAVE THE SAME PROBLEM. *NM THE WINDOW REGULATOR WAS REPLACED. UPDATED 02/07/06. *JB
WHEN DRIVING CONSUMER SMELLED FUMES COMING FROM THE VENTS, CAUSING THE CONSUMER'S EYES TO BURN, AND MAKING IT HARD FOR THE CONSUMER TO BREATH. *AK
ENGINE LIGHT ON. I HAVE TAKEN IN 3 TIMES. UNKNOWN CAUSE/EMISSION SYSTEM OR FUEL SYSTEM. ENGINE HAS 2206 MILES ON IT. *LA
WHEN HAVING AN OIL CHANGE DEALER NOTICED A SEVERE OIL LEAK. THE HEAD GASKET/ OIL PAN BOLTS, AND UPPER OIL PAN WERE REPLACED AT DIFFERENT TIMES BEFORE OIL LEAK WAS FIXED. *AK
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026