2010 Toyota Sequoia Engine Problems

While driving on the highway, a valve spring in your engine broke, causing your vehicle to shake and requiring you to slow down. The owner notes this issue has been reported by other Toyota owners with the same engine at similar mileage (around 117,000 miles). Fixing this will require removing the engine cylinder head to access and replace the broken valve spring.

While towing a 6,000 lb trailer within the vehicle's factory weight limits, excessive heat from the exhaust melted your rear bumper cover near the exhaust tip. The bumper was original factory equipment and shouldn't be damaged by normal towing use, creating a potential fire hazard.

When you accelerate hard, a strong ammonia or rotten egg smell enters your cabin through the vents even when they're set to recirculation or outside air. The odor is potent enough to burn your eyes for a few seconds and cause nausea, which distracts you while driving. This issue has been reported by multiple Sequoia owners with no known fix from Toyota. The problem likely involves a faulty catalytic converter or sulfur-based fuel reaction in the exhaust system that needs to be inspected and possibly replaced.

Your check engine light came on, and a dealer recommended replacing the air injection pump and air switching valve. The dealer couldn't confirm these parts were actually faulty but suggested replacing them as a preventive measure based on the warning light. Your vehicle was out of warranty at 103,000 miles, so you had to pay for the repair yourself. The fix involved replacing the air injection system components.

DISCOVERED REAR BUMPER WAS SEVERELY BURNED AROUND TAIL PIPE AFTER PULLING A TRAILER. I PURCHASED THE VEHICLE NEW FROM MODESTO TOYOTA. I BROUGHT THE VEHICLE TO MODESTO TOYOTA AND REPORTED THE PROBLEM AS A FACTORY DEFECT. THEY INSPECTED THE PROBLEM AND REPORTED BACK TO ME THAT THERE WAS NOTHING WRONG WITH THE TAIL PIPE AND BECAUSE IT WAS BEYOND THE WARRANTY PERIOD THERE WAS NOTHING THEY WOULD. I HAVE LOOKED AT ANOTHER 2010 SEQUOIA WHICH PULLS A TRAVEL TRAILER AND DISCOVERED THE SAME PROBLEM. I FEEL THIS PROBLEM HAS A POTENTIAL TO START A FIRE AND SHOULD BE COVERED BY TOYOTA REGARDLESS OF VEHICLE MILES. *TR

IT MADE NOISE ON START AND WHILE PULLING OUT OF PARKING THE FLAMES/SMOKE CAME UNDER THE ENGINE/HOOD AND WHOLE VEHICLE GOT BURNED IN FEW MINUTES. RECENTLY HAD 30K SERVICE DONE BY TOYOTA DEALER. IT HAS BEEN RUNNING IN EXCELLENT CONDITION. *TR

WHILE PULLING OUR TRAVEL TRAILER WITH OUR 2010 TOYOTA SEQUOIA LIMITED 5.7, UPON STOPPING TO FUEL UP THE BUMPER AROUND THE EXHAUST PIPE HAD MELTED AND WAS SMOKING. WE NOTICED IN THE INTERIOR A FOUL SMELL, LIKE A PLASTIC BURNING BUT COULDN'T FIGURE IT OUT. WE STOPPED TO FUEL UP AND I CHECKED UNDER THE HOOD AND THEN DISCOVERED WHERE THE PROBLEM WAS. THE TOW VEHICLE WAS WELL WITHIN LIMITS ACCORDING TO THE MANUFACTURER. *TR

2010 SEQUOIA PLATINUM EDITION. WHEN TOWING A TRAILER THE REAR BUMPER SECTION AROUND THE EXHAUST PIPE EXIT BECOMES BLACK AND MELTS FROM THE EXTREME HEAT. A FIRE HAZARD. DEALERSHIP NOTIFIED 3 SEPARATE OCCASIONS WITH NO CORRECTIVE ACTION. *TR

IN JUNE 2010, TOOK FAMILY VACATION FROM VIRGINIA TO DISNEY WORLD. PULLED TRAVEL TRAILER RATED BELOW TOW RATING (7,000 LBS). WHEN ARRIVED, NOTICED THAT THE REAR BUMPER MELTED ALL AROUND THE EXHAUST. EXHAUST DOES NOT CLEAR THE BUMPER. IF YOU LOOK AT OTHER TOW VEHICLES, THE EXHAUST PIPE CLEARLY IS AWAY FROM THE VEHICLE. THE EXCESS LOAD FROM PULLING THE TRAILER CREATES EXCESS HEAT. REPORTED THE PROBLEM TO TOYOTA, THEY PROVIDED ME WITH A NEW BUMPER, CHANGED NOTHING ELSE. DECIDED I DID NOT WANT THIS TO HAPPEN AGAIN, WENT TO A TOYOTA PARTS SITE ON THE SOUTH EAST REGION AND ORDERED A EXHAUST PIPE TIP. WORKS GREAT. TAKES THE HEAT PAST THE BUMPER. I SHOULD NOT HAVE HAD TO BUY THIS, TOYOTA SHOULD RECALL AND PROVIDE THE EXHAUST TIP ON ALL. *TR

2010 TOYOTA SEQUOIA. BRAND NEW. BUMPER BEGAN TO MELT FROM EXTREME HEAT EMITTING FROM EXHAUST PIPE. STRONG SMELL OF SMOKE IN VEHICLE. BROUGHT TO TOYOTA. HAD TOYOTA REP. INSPECT. HE STATED THAT TOYOTA HAS REC.'D. OTHER COMPLAINTS OF SAME AND THAT THEY ARE WORKING ON SOLUTION. I FEEL THAT THIS IS A FIRE HAZARD. *TR

WHILE DRIVING OUR VEHICLE, THE ENGINE SUDDENLY REVVED UP ON ITS OWN WITHOUT THE ACCELERATOR BEING DEPRESSED. NO CARPET WAS OVER THE ACCELERATOR AND THE PEDAL AND CARPET HAD BEEN REPLACED BY TOYOTA ALREADY. WE CONTACTED TOYOTA AND THEY DID NOT RESPOND. *TR