2018 Toyota Highlander Engine Problems

While driving my 2018 Toyota Highlander Limited, the check engine light began flashing off and on. I was near an exit and drove off the freeway. I could feel the car (near the gas pedal) start shaking, then the power went down quickly... as I was trying to find a safe place to go. The farther I drove, there was less power until the car was going about 2 miles an hour. The check light continued flashing as I pulled into a parking lot. This was very scary as I'm sure the car would have just stopped on the freeway if I had not been near an exit as it just simply had no power left. (The check engine light has been on over a year and I took it to three different mechanics. Not one could fix it. This car wiped out my savings and now sits at a Toyota dealership)!

NHTSA ID

11750828

Incident

Jul 15, 2026

I just got my vehicle inspected and successfully passed with no codes on 07/07/2026. Today 07/10/2026 as I was driving to work my vehicle began to jerk/ jitter and when into limp mode. I took it to a shop to have the codes checked on it and they said it was something to do with the transmission and they don’t specialize in that type of work. My vehicle has less than 45400 miles on it and been maintained regularly. I was told this was a common issue with these vehicles. I don’t know where to go to get this serviced. I called around to local shops with no luck at getting someone to fix or look at the cause of it.

NHTSA ID

11749652

Incident

Jul 10, 2026

Engine cam tower oil leak due to the manufacturer's inadequate assembly of the engine parts. The mating surfaces were not adequately prepared and/or application of a contaminated sealant did not adhere to the surfaces creating a small oil leak that eventually became larger and finally noticed. The Car Care Nut automotive shop performed this repair and documented in the video: [XXX] The 2018 engine (3.5L DOHC V6 D-4S Engine with Dual VVT-i Direct Shift) with 52,500 miles has by now (2024) developed a large oil leak coming from the cam tower seal, and requires replacement. I'm the original owner with the car always being garaged and maintained by the book at the dealer. Toyota of America is refusing any assistance with the defective engine component even though it is under the 60,000 miles powertrain warranty, but past the 60 months warranty period. The leak likely has been there since leaving the factory floor, but was not noticeable until after five years of use. Leaking engine oil on hot components of the engine bay may result in smoke, burning odor, and even fires. This vehicle has a concurrent vehicle safety complaint NHTSA ID Number: 11611353 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11645760

Incident

Nov 4, 2024

Wife was driving and out of nowhere axle to the transfer case broke leaving her stranded in the middle of the road. Seems like transmission had been a common issue in these vehicles around the same year

NHTSA ID

11630019

Incident

Dec 9, 2024

My husband took my car from the carport and parked it in the driveway near the water hose to wash the car. When he finished, it would not start. The message “Braking Power Low” , “STOP in a Safe Place”, “ See Owner’s Manual”showed up. Of course, we could not find anything in the large owner’s manual concerning that! I checked with my VIN to see if mine was included in the recall regarding this same matter, but it was NOT, just as all other Toyota Highlander 2018 owners who complained were told!!! We will find out tomorrow and pray it won’t be a lot of money. We have a Thanksgiving trip planned to see our grandchildren. Today is Sunday and we planned to leave on Tuesday. I shudder to think what could have happened if it suddenly stopped on [XXX] with all the holiday traffic. My husband was looking to buy a car after the first of the year and was going to buy a Toyota. After this, he has reconsidered. Toyota needs to see all these complaints and how many were not included in the recall!!! Something’s not right! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11627121

Incident

Nov 24, 2024

While driving the car at approximately 40 mphs the car suddenly jolted and stopped moving. Luckily no one was behind and I pulled over also noticing check engine light came on. I immediately called Toyota and was able to drive it to them. I spent $140 diagnosis fees for them to say it was ignition coil B. After replacing the coil the light and same problems continued. We took the car to another mechanic, spent $600 diagnosis fees to find out it is the ECM. We then contacted the Toyota dealer asking about previous recalls that were on the ECM for 2018 Toyota Highlanders which is our car. They stated our car based off the VIN has no recalls. How could this recall be for 2018 Toyota Highlanders but not for our 2018 Toyota Highlander with the same issues? Our car only has 80,000 miles.

NHTSA ID

11618359

Incident

Aug 20, 2024

The 2018 Toyota Highlander has less than 100K miles on it and has been diagnosed with an $11K repair for essentially a new engine! The dealership (Coughlin Toyota, Heath OH) has said it needs cylinder head assembly for $10,684.20. The error message we are getting is a "Check Engine" light "Take Vehicle to Dealership" and the AWD/ Traction Control shuts off. When searching online forums, there are MANY people experiencing the same problem, apparently a well know issue with Toyota (not just Highlanders). We have only owned this vehicle for a few years and believe this is a manufacturer error that desperately needs investigated. Please.

NHTSA ID

11617475

Incident

Sep 27, 2024

The 2018 engine (3.5L DOHC V6 D-4S Engine with Dual VVT-i Direct Shift) with 52,500 miles has by now (2024) developed a large oil leak coming from the valve cover to cam tower seal, and requires replacement of valve cover assembly and gasket priced at $2173.51 by a local Toyota dealer. I'm the original owner with the car always being garaged and maintained by the book at the dealer. Toyota of America is refusing any assistance with the defective engine component even though it is under the 60,000 miles powertrain warranty, but past the 60 months warranty period. The leak likely developed prior to the first 60 months of use, but was just now noticeable to the technician. Leaking engine oil on hot components of the engine bay may result in smoke, burning odor, and even fires.

NHTSA ID

11611353

Incident

Aug 23, 2024

The contact owns a 2018 Toyota Highlander. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer, and it was determined that there was low compression in cylinder #1. The contact was informed that the engine was damaged and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 61,000.

NHTSA ID

11609063

Incident

Aug 9, 2024

Mileage

61,000 mi

As I was returning to my house and about to pull into our garage I was driving very slowly, riding the brake in fact. I was going less than 1 mph but as I first entered the garage my car engine suddenly roared very loudly and sped inside. I pressed as hard as I could on the brakes and the car skidded towards the left and slammed into the garage wall. I firmly believe that the only thing that kept my car from traveling farther was the garage door frame. Between my braking and then turning off the engine, I came to a stop. There were skid marks on the pavement at the garage entrance from the hard braking and both the driver's door and the passenger door on that side were severely damaged. The car was now angled to the left and not pointed straight into the garage as it should have been. At no time did I press on the accelerator.

NHTSA ID

11605653

Incident

Jul 25, 2024

Transmission is bad. Toyota dealership says it needs to be replaced. Really? In a 2018 Toyota. I thought these were good cars. Supposed to last a long time. That’s why I paid over $30,000 for it. And this is what I get. There is something wrong with this scenario. I could have bought a much cheaper car and it would still be functioning fine.

NHTSA ID

11588046

Incident

May 2, 2022

Driving on I75 at 75mph, while trying to adjust the steering wheel, as soon I unlocked steering wheel lock and put the steering all the way to lowest position it just stalled on highway. Lucky enough I was alone and was able to pull over safely. There is seriously something wrong with steering wheel electrical or ignition system or something with else.

NHTSA ID

11542479

Incident

Sep 4, 2023

Engine light came on, took to auto parts store and they checked for the code. Was told it was an issue with the fuel pump/ vacuum. Reset engine light, stopped to fill up with gas and car would not restart. The steering wheel locked and car would not crank. Was jumped off by a bystander, still would not turn over. After sitting for approx 15 minutes, I tried to restart vehicle again and it cranked. One week later, on vacation, car would not start after getting gas. Once again, took it to auto part store and same code and check engine light was on. Reset engine light, drove fine. Once check engine light is on, I am unable to use cruise control, this was very inconvenient since we were traveling! I have had this same issue happen about 5 times now! Making appointment with dealership to see if this weill be covered by my warranty and hopefully it is a simple fix.

NHTSA ID

11487975

Incident

May 16, 2022

The contact owns a 2018 Toyota Highlander. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power after coming to a full stop at a traffic light. The vehicle was taken to an independent mechanic and the dealer; however, the mechanic and the dealer were unable to duplicate the failure. The contact related the failure to a faulty Auto Start/Stop feature. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 50,000.

NHTSA ID

11478409

Incident

Aug 9, 2022

Mileage

50,000 mi

Low brake fluid pull over immediately warning ⚠️,vehicle engine shut off would not restart was on highway going 55 mph .Had to get vehicle towed . There was a recall on brake booster but my Vin was not included same model year 2018

NHTSA ID

11467594

Incident

Jun 3, 2022

The contact owns a 2018 Toyota Highlander. The contact stated while driving 70 MPH, the check engine warning light illuminated informing the driver that the AWD system and stability were disabled. The vehicle was taken to the dealer where they diagnosed the failure of the sub-assembly and the water temperature sensor needed to be replaced. The contact stated that he was informed that the onboard computer disabled the system due to the weather. The dealer informed the contact that the parts were on national backorder. The dealer performed a temporary repair by placing plastic on the grill to keep cold air out; however, the failure reoccurred several times. The manufacturer was notified of the failure and informed the contact that the parts were not covered under warranty. The approximate failure mileage was 48,000.

NHTSA ID

11452146

Incident

Feb 8, 2022

Mileage

48,000 mi

Unable to start vehicle twice. In both instances, foot was placed on the brake before pressing Start button and brake was extremely stiff. When Start button is pushed, electronics engage (control panel lights, A/C, etc.) but engine will not engage. In the first incident, car had been stopped to refuel and would not restart. Car had been started without incident and been running for approximately 20 minutes prior to stopping for refueling. Tried to restart the engine for 20-30 minutes unsuccessfully and had to have vehicle towed to authorized Toyota dealer. Dealer was unable to look at it for two days and was able to start engine on the first try two days later. Dealer could not replicate problem. In the second incident, car had been in a parking lot for two hours on a hot day. Again, brake was extremely stiff, electronics engaged but engine would not start. A message appeared Brake Power Low. We shut off A/C and were able to restart the vehicle. In both instances, the driver-side door was open to try and let hot air out - we don't know if this has any bearing on the issue.

NHTSA ID

11434415

Incident

Sep 26, 2021

The contact owned a 2018 Toyota Highlander. The contact stated the recall repair for NHTSA Campaign Number: 20V012000 (Fuel System, Gasoline) had been completed on the vehicle. The contact stated while her husband was driving 55-65 MPH, the vehicle inadvertently stalled. An unknown warning light was illuminated. The contact stated that her husband veered to the side of the road. The contact's husband was able to restart the vehicle. The vehicle was taken to the dealer who informed the contact's husband that they could not determine the cause of the failure; however, the computer onboard was reset. The contact stated that the failure recurred while driving. The contact's husband was able to restart the vehicle after several attempts however, the failure recurred several times while the contact's husband was taking the vehicle to the nearest dealer. The vehicle was taken to a second dealer - Lithia Toyota of Billings (1532 Grand Ave, Billings, MT 59102) who diagnosed that no issues were found and advised the contact's husband to trade-in the vehicle. The vehicle was not repaired and was traded. The manufacturer was notified of the failure but offered no assistance. The approximate failure mileage was 49,000.

NHTSA ID

11433660

Incident

Feb 13, 2021

Mileage

49,000 mi

LIGHTS CAME ON FOR ENGINE WARNING -- LOW FUEL PUMP NEEDS TO BE REPLACED

NHTSA ID

11390878

Incident

Nov 30, 2020

VEHICLE WAS DRIVING ON STREET AND CHECK ENGINE LIGHT CAME ON. TOOK VEHICLE TO SERVICE PROVIDER AND IS RELATED TO RECALL. NO REMEDY FOR RECALL HAS BEEN DEVELOPED -- CURRENTLY DRIVING A LOANER CAR.

NHTSA ID

11384411

Incident

Dec 3, 2020

Mileage

32,000 mi

AS OF THIS DATE, MY 2018 TOYOTA HIGHLANDER HAS DELAYED ACCELERATION, HESITATION, JERKING, LURCHING, ERRATIC THROTTLE RESPONSES, ETC. WHILE ACCELERATING FROM A STOP. THIS HAS OCCURRED TWO TIMES TO DATE. I WAS ABLE TO PULL TO THE SIDE OF THE ROAD, SHUT OFF THE VEHICLE, RESTART AND THEN THE VEHICLE PERFORMED PROPERLY AFTER THAT. MY CONCERN IS WHAT MAY HAPPEN WHEN IT DOES IT AGAIN. NOTHING TO SHOW IN A PHOTO.

NHTSA ID

11360211

Incident

Sep 17, 2020

Mileage

43,100 mi

TL* THE CONTACT OWNS A 2018 TOYOTA HIGHLANDER. THE CONTACT STATED WHILE DRIVING 35 MPH, THE VEHICLE STALLED ON SEVERAL OCCASIONS WITH THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE VEHICLE WAS TAKEN TO ROUTE 22 TOYOTA (109 US-22, HILLSIDE, NJ 07205, (973) 287-4741), BUT WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS CONTACTED AND REFERRED CONTACT TO NHTSA. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 20V012000 (FUEL SYSTEM, GASOLINE). THE FAILURE MILEAGE WAS 20,000. PARTS DISTRIBUTION DISCONNECT.

NHTSA ID

11350691

Incident

Aug 21, 2020

Mileage

20,000 mi

MY 2018 TOYOTA HIGHLANDER EXPERIENCED 4 DIFFERENT EPISODES OF SPONTANEOUS ACCELERATION WHILE ON LOCAL HIGHWAYS, 3 BEING ON RESUMPTION OF SPEED WHILE USING CRUISE CONTROL AND THE 4TH NOT WHILE ON CRUISE CONTROL.THERE ARE 10 OTHER ELECTRONIC TYPES OF MALFUNCTIONS NOT INVOLVING SAFETY ISSUES. PER THE LEMON LAW OF WA STATE, THE MATTER WAS TAKEN TO ARBITRATION. THE ARBITRATER FOUND IN MY FAVOR AND AWARDED ME A NEW REPLACEMENT HIGHLANDER. TOYOTA HAS ASKED FOR A JURY TRIAL. I THEREFORE CONTINUE TO DRIVE A VEHICLE THAT COULD CAUSE A DANGEROUS, POTENTIALLY FATAL CAR. I CAN SUPPLY FURTHER DOCUMENTATION SHOULD YOU WANT IT.

NHTSA ID

11348839

Incident

Dec 12, 2019

Mileage

4,500 mi

TL* THE CONTACT OWNS A 2018 TOYOTA HIGHLANDER. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 20V012000 (FUEL SYSTEM, GASOLINE). THE CONTACT STATED AFTER STARTING THE VEHICLE, THE VEHICLE IDLED ROUGH. THE LOW-PRESSURE WARNING LIGHT WAS ILLUMINATED. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. THE CONTACT CALLED AVONDALE TOYOTA (10005 W, PAPAGO FWY, AVONDALE, AZ 85323, (877) 554-6890) AND WAS INFORMED THAT PARTS WERE NOT AVAILABLE FOR THE RECALL REPAIR. THE CONTACT WAS OFFERED A LOANER VEHICLE BUT DECLINED THE OFFER. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE FAILURE MILEAGE WAS 9,000. PARTS DISTRIBUTION DISCONNECT.

NHTSA ID

11338202

Incident

May 1, 2020

Mileage

9,000 mi

MY CAR IS ONLY 2YEARS BUT I FOUND OIL ARE LEAKING. I HAD CHECK UP AT LOCAL BODY SHOP AND THEY FOUND OUT THAT OIL LEAKS VACUUM PUMP SO I NEED TO REPLACE. *TR

NHTSA ID

11327495

Incident

Jun 5, 2020

Mileage

14,000 mi