2010 Toyota Sequoia engine problems

Filed Jun 9, 2026 · Engine · GA

I bought the vehicle under the assumption that it only had 138,000 miles on it. Upon trying to register it with Carfax I was informed that the odometer had been tampered with and the actual mileage is 345,000

Filed May 24, 2021 · Engine · 103,000 miles · TX

The contact owns a 2010 Toyota Sequoia. The contact stated that the check engine warning light was illuminated. The vehicle was taken to an unknown dealer to be diagnosed. The contact was informed that there was moisture and condensation in the air injection pump and the air switching valve. The contact stated that there was a manufacturer’s warranty pertaining to the failure causing the check engine warning light to become illuminated however, the warranty was for 150,000 miles or 10 years, whichever came first. The vehicle was no longer covered under the warranty. The manufacturer was notified of the failure. The vehicle was repaired. The approximate failure mileage was 103,000. "The contact was informed that there was moisture and condensation in the air injection pump and the air switching valve." since this is not correct. The dealer only said that the items needed to be replaced due to the indicator light. They could not verify that there was a specific issue with the parts but said that it was an indicator that the parts could go bad and needed to be replaced.

Filed Feb 25, 2020 · Engine · 117,000 miles · WA

A valve spring broke while traveling on the highway, causing the vehicle to shudder and require a slower speed. I fortunately was not in heavy traffic but had circumstances been different this could have posed a more severe safety issue. Upon researching this problem, I'm finding increasingly more instances where the same issue has happened to other toyota owners with the same engine. All around the same mileage (117k).

Filed Oct 9, 2017 · Engine · 92,500 miles · CA

While towing 6000 lb travel trailer heat exiting the exhaust has melted rear bumper cover near exhaust tip. Everything on vehicle is factory original and should not be melting from excess heat generated by towing within factory specified weight limits. Poses a fire risk.

Filed Nov 12, 2015 · Engine, Fuel system · 93,861 miles · GA · 2 injuries

I have an ammonia smell, worse than a rotten egg, under hard acceleration, that comes through the vehicle vents and into the cabin, even with all windows up and vents on recirculation or outside air. Many sequoia owners have reported this to toyota, and they have no known fix. The odor that comes into the cabin burns your eyes for a few seconds, as well as makes my passengers and I nauseous, and distracts me when I'm driving. I believe this is a safety hazard, because we are inhaling whatever is in the cabin, and I can imagine that it is not safe, like any exhaust.

Filed Sep 16, 2012 · Body, Engine · 50,250 miles · CA

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.

Filed Mar 10, 2012 · Engine · TX · fire

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.

Filed Jul 26, 2011 · Engine · 19,255 miles · OH

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.

Filed Feb 28, 2011 · Engine · TX

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.

Filed Oct 20, 2010 · Engine · 5,000 miles · VA

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.