Manifold/header/muffler/tail Pipe Problems of Toyota Highlander

Near the end of a 180 mile trip, vehicle was on highway traveling at approximately 60 mph when light came on saying engine had stopped. Engine was smoking and was completely out of oil despite it being full at the start of the trip. Mechanic found that engine had seized and had to be replaced in full. Upper manifold also had to be replaced due to presence of metal shavings. Transmission was later found to be leaking oil and at this time appears unfixable. Car has been very well maintained with regular maintenance and oil changes and there were no warning signs of any issues - car ran smoothly until the engine seized.

See all problems of the 2014 Toyota Highlander 🔎.

Head gasket bolts stripped out causing coolant to leak and loss of cylinder compression. This occurred on a Toyota 2. 4 liter engine. This is a common failure mode on these engines due to a design defect. The thread fatigues at the intake side of the engine because the manifold is plastic and there is a rubber insulator between the manifold and block which traps the heat in that part of the block and fatigues the aluminium threads on the head bolts. This happens on many models from 2001-2006 that utilize the Toyota 2. 4 liter aluminum engine. This is a $2,500-$5,000 repair. Toyota has issued a service bulletin on this. I believe they should have some responsibility in fixing this design problem. Engines shouldn't fail at 100,000 miles without cause such as overloading or abuse. I don't have a tow package and have garaged this vehicle. There was no cause and effect. This failure I've come to learn is common for this engine.

See all problems of the 2003 Toyota Highlander 🔎.

Engine began revving upon acceleration from a stop light. Engine warning light came on indicating low oil pressure. Pulled into auto repair shop who found dipstick was dry. Poured oil into engine only to see it leaking out from below passenger side. Car was then towed to local Toyota dealer. Dealer replaced oil cooler hose 15767-31010 which had failed with 15767-31020 (all metal assembly). Replaced oil and restarted engine. Engine is making tapping sound and dealer recommends full replacement. Depending on option, cost is between $7500 for a used Toyota engine to $8300 for jarco engine (which I believe is rebuilt). This occurred in south carolina while we were vacationing from maryland. Thankfully, we were not on the highway when this occurred. Will have to leave vehicle here for repair and fly back to drive it home later. Btw, the single pipe oil hose was replaced in may 2010 under the ssc 90k recall at 33k miles. That is not the part that failed. This is the dual manifold rubber hose that Toyota has now replaced with an all metallic assembly. As far as I know, this part was never recalled, but there is a TSB 02011-11 available.

See all problems of the 2008 Toyota Highlander 🔎.

Leak at rear of engine, under intake manifold. Head gasket, or warped head. Cylinder head bolt threads damaged . Toyota said some vehicles equipped with the 2az-fe engine may exhibit damaged cylinder head bolts.

When I was driving on the interstate about 75mph the temperature gauge rose above the read line (hot). Before I was able to get to a parking area it continuously rose and fell, however, it never dropped as low as the middle line on the gauge. After checking the fluids I had to add water. I took my Highlander to a mechanic and they told me that the intake manifold was cracked and was leaking coolant($700 to repair this). I had this fixed and had not taken it out of town until Apr 27, 2013 and the same thing happened again. Took it to Toyota and they told me that the threads were stripped and the bolts were coming out "the head is pulling away from the block and coolant is leaking. I take very good care of my vehicle and have every receipt for oil changes and maintenance. I was told that I may need a new engine ($6000 to fix this) and am concerned that this is happening to a lot of people with this type of car. Coolant is dangerous to humans, animals, and the environment so this can be a safety concern. Toyota needs to take responsibility for this error I am very frustrated and Toyota is not going to do anything about it. I know I am not the only one with this issue with this Toyota and they have lost a loyal customer over this. This issue is obviously happening more and more everyday and it is frustrating. Any advise is welcome!!!.

See all problems of the 2006 Toyota Highlander 🔎.

Engine was leaking coolant. Car was brought to repair shop where it was discovered that the engine cylinder's head bolts were stripped causing the leak. Later was informed damage was due to the placement of the insulation foam rubber piece between the intake manifold and the engine block that created an uneven dispersion of heat, creating fatigue in the aluminum block allowing the headbolt to strip. Contacted Toyota who refused to acknowledge manufacturing defect. Repairs totaled $2,000 due to this manufacturing error.

See all problems of the 2004 Toyota Highlander 🔎.

The incident occurred on a family road trip from chicago, IL to hamilton, on, canada. After driving about 7 hours into the 8. 5 hour trip, I noticed the check engine light appear and the temperature gauge rise to the very top. I immediately pulled over and assumed that there was not enough coolant to keep the engine cool, as it was a hot day. After several minutes, I restarted the car and noticed the temperature gauge had returned to its normal position. I re-entered the highway and was only able to drive for about 10 minutes before I noticed the temperature gauge begin to rise once again. I exited the highway and found a canadian tire store in london, on, canada where a mechanic looked at the vehicle and concluded that there was some sort of leak in the engine. I was told that it could be one of two very uncommon problems that would both cost a great amount of money to fix and would most likely extend my family's stay in canada. We were told that we could stay in london and have a mechanic begin working on the vehicle the next day or continue on to hamilton by stopping every few miles to refill the coolant, as we were only about an hour away. We decided to continue on to hamilton and stopped around 5 times to refill the coolant level. Upon reaching hamilton, on, canada we found a local mechanic who took a closer look at the vehicle and its engine. We took the vehicle to him on Friday, July 6, 2012 and he told us that it looked like an intake manifold gasket leak. On Saturday, July 7, 2012 the mechanic informed us that the leak was in fact coming from one of the 4 cylinder heads as the bolts on the engine were stripped. Our only option was to completely replace the engine. The mechanic was able to find a matching engine nearby and completed the replacement by Tuesday, July 10, 2012. We returned home to chicago the very same day without any problems along the way.

The contact owns a 2004 Toyota Highlander. While driving approximately 40 mph, the contact noticed that the check engine warning light illuminated. The vehicle was taken to an independent mechanic who informed the contact that the cylinder behind the intake manifold was leaking and that she would need to replace the engine. The dealer advised the contact that since the vehicle was no longer under warranty they would not be able to provide her with any assistance. The manufacturer was notified and the contact was waiting for a response. The vehicle was not repaired due to the cost. The current and failure mileage was approximately 78,000.

I noticed coolant leaking from underneath the plastic into intake manifold in the rear of the engine. I brought it in for repair and the mechanic said he noticed a large piece of foam rubber between the intake manifold and the engine block and head. The leak was behind the foam piece. The only option to discover the source of this leak was to remove the plastic intake manifold, which the mechanic did. After this was removed, it became obvious that coolant had been leaking a minor amount for quite some time due to build up between the cylinder head and block. The only option left is to remove the head, which requires an extensive disassembly (r and r cylinder head). After loosening the bolts in sequence, he noticed three of the head bolts in the back of the engine were loose. After he removed the head sure enough, one bolt came out with aluminum in the thread thus indicating a stripped bolt. And the other three were loose. He said the only option was to replace the engine block, which will cost about $6000 including shipping/labor. I can not afford this and so had the Highlander towed back to my home.

See all problems of the 2002 Toyota Highlander 🔎.