2017 TOYOTA HIGHLANDER

FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2018-2019 4Runner, 2019-2020 Avalon, 2019 Corolla Hatchback, 2017-2019 Highlander, 2018-2020 Camry, 2020 Corolla, 2018-2019 Land Cruiser, 2017-2020 Tacoma, 2019-2020 RAV4, 2019-2020 Sequoia, 2017-2020 Sienna, 2019-2020 Tundra, 2018-2020 Lexus ES350, 2017 Lexus GS200t, 2017-2019 Lexus GS350, 2019 Lexus GS300, 2018-2020 Lexus LC500h, 2019-2020 Lexus LS500, 2018-2019 Lexus GX460, 2017 Lexus IS200t, 2019 Lexus IS300, 2019 Lexus IS350, 2018-2020 Lexus LC500, 2018 Lexus LS500, 2019 Lexus LS500h, 2018-2019 Lexus LX570, 2017 Lexus RC200t, 2019 Lexus RC300, RC350, 2017 and 2019-2020 Lexus RX350, 2018-2020 RX350L, 2019 Lexus UX200, 2018-2019 Lexus NX300 vehicles. The low-pressure fuel pump inside the fuel tank may fail.

Risk: If the fuel pump fails, the engine can stall while driving, increasing the risk of a crash.

ELECTRICAL SYSTEM

Fujian Wanda Automobile Glass Industry (Wanda) is recalling certain aftermarket Replacement Windshields sold for use in 2014-2018 Toyota Highlander vehicles. The windshields have an attached wire harness that water may leak into, possibly causing damage to the vehicle's Engine Control Module (ECM).

Risk: The ECM damage may result in the engine stalling, increasing the risk of a crash.

EQUIPMENT

Gulf States Toyota, Inc. (GST) is recalling certain 2017 Toyota Highlander and Highlander Hybrid vehicles equipped with accessory roof rail cross bars. The fasteners for the roof rails may not be torqued properly.

Risk: The roof rails may loosen and possibly detach from the vehicle, becoming a road hazard and increasing the risk of a crash.

ENGINE

Formal Complaint to NHTSA – Summary I am submitting this formal complaint regarding repeated mechanical and electrical failures involving my 2017 Toyota Highlander, purchased as a Toyota Gold-Certified vehicle with an extended Platinum Warranty. Despite strictly following Toyota’s maintenance guidelines and using only certified dealerships for all services, the vehicle has become inoperable multiple times, requiring five separate tows and resulting in repair costs exceeding $10,000. In June 2025, a Toyota dealership replaced the engine after diagnosing a warped head due to water pump failure. Following this, the vehicle began experiencing repeated charging system failures and electrical malfunctions. Multiple components—including the alternator, battery, and sensors—were replaced at another Toyota dealership based on ongoing issues, but the problems persisted. On September 2, 2025, a Toyota technician identified a missing ground wire nut as the likely root cause of these electrical failures. He confirmed the issue originated during the engine installation and that the unsecured ground caused system malfunctions. After repairs, the vehicle was again returned with a loud engine knocking noise, later traced to an improperly secured component from a prior repair. These events have raised significant concerns for the safety of myself and my family. Improper installation of major components and misdiagnosis by certified service providers have led to hazardous driving conditions, unexpected vehicle shutdowns, and unnecessary costs. I am requesting that the National Highway Traffic Safety Administration investigate this matter for potential safety defects related to improper engine installation, grounding failures, and faulty electrical diagnosis by certified Toyota service centers. Documentation, invoices, and repair records are available upon request. Thank you for your attention to this critical safety issue.

ELECTRICAL SYSTEM

Formal Complaint to NHTSA – Summary I am submitting this formal complaint regarding repeated mechanical and electrical failures involving my 2017 Toyota Highlander, purchased as a Toyota Gold-Certified vehicle with an extended Platinum Warranty. Despite strictly following Toyota’s maintenance guidelines and using only certified dealerships for all services, the vehicle has become inoperable multiple times, requiring five separate tows and resulting in repair costs exceeding $10,000. In June 2025, a Toyota dealership replaced the engine after diagnosing a warped head due to water pump failure. Following this, the vehicle began experiencing repeated charging system failures and electrical malfunctions. Multiple components—including the alternator, battery, and sensors—were replaced at another Toyota dealership based on ongoing issues, but the problems persisted. On September 2, 2025, a Toyota technician identified a missing ground wire nut as the likely root cause of these electrical failures. He confirmed the issue originated during the engine installation and that the unsecured ground caused system malfunctions. After repairs, the vehicle was again returned with a loud engine knocking noise, later traced to an improperly secured component from a prior repair. These events have raised significant concerns for the safety of myself and my family. Improper installation of major components and misdiagnosis by certified service providers have led to hazardous driving conditions, unexpected vehicle shutdowns, and unnecessary costs. I am requesting that the National Highway Traffic Safety Administration investigate this matter for potential safety defects related to improper engine installation, grounding failures, and faulty electrical diagnosis by certified Toyota service centers. Documentation, invoices, and repair records are available upon request. Thank you for your attention to this critical safety issue.

POWER TRAIN

TRANSMISSION ON THIS VEHICLE FAILED AND CAUSES SUDDEN DECELERATION CAUSING A SAFETY ISSUE. SUDDEN DECELERATION. YES, TOYOTA OF VERO BEACH HAS CONFIRMED FAILURE OF THE TRANSMISSION. NO, WARNING JUST FAILED THEN GOT ALL THE WARNINGS AND LIGHTS IMMEDIATELY THEREAFTER.

POWER TRAIN

2017 Toyota Highlander XLE Why hasn’t Toyota issued a recall?! My transmission failed at 2AM on the Florida turnpike 140 miles from home, after a physically and emotionally exhausting day moving my daughter to college. I slept in my car 7 hours, scared, waiting to get towed. The closest shop that was open early on a Saturday was an hour away in the other direction and when I got there, they told me they wouldn’t be able to look at it until Monday. Pointless to pay 2 nights at a hotel, so I got an Uber to get a rental to get home. It wasn’t bad enough when I found out the cost to replace the transmission on a car with 96k miles (my Camry had 300k when I sold it), but even if I agreed to pay, the transmission is backordered, and it could be months. Months! I had to pay the diagnostic fee - completely understandable - and I needed it moved to avoid a $75 per day storage fee. AAA would tow it 100 miles, then $7.00 per mile. When I asked to speak with someone because I had the upgraded membership that provided 200 miles, I was told they wouldn’t cover any part of the tow because it was already at an auto shop. The least expensive option was to get a transport company ($300) to pickup and deliver the car to the local Toyota dealership. They’re anticipating at least 3 months, but they’ll pay for a rental if I agree to have them do the repair. Has Toyota fixed the issue, or will the new transmission likely to have the same problem?

FUEL/PROPULSION SYSTEM

Today (8/26/2025) my wife experienced the engine light kicked on and that the AWD system needed to be checked. After fueling up it made knocking noises and difficulty starting, and took two times to start up. Ran an OBD scan and this is what it says, which is related to fuel pump low pressure. P117B - Fuel Pressure Sensor Circuit Range/Performance Severity - High Description - Indicates a problem with the fuel pressure sensor circuit, where the sensor's output signal is outside the expected range or performance criteria, leading to potential issues with fuel delivery or engine performance. P0174 - System Too Lean (Bank 2) Severity - High Description - Your engine is getting too much air and/or not enough fuel, this is known as a "Lean" condition. Excess oxygen is getting into your engine, which makes the combustion process less efficient. This could be caused by many different factors. Consequences of Continued Driving - Reduced power, Engine knocking, Rough idle

POWER TRAIN

Transmission whining, harsh shifting, delayed acceleration

ENGINE

After getting gas, the vehicle will not start. It will crank and crank but not turn over, like it is starving for gas. Then after 10-15 minutes it will start barely and to keep it running I have to floor the accelerator. Any other time it starts just fine. There are also no codes causing a check engine light.

FUEL/PROPULSION SYSTEM

After getting gas, the vehicle will not start. It will crank and crank but not turn over, like it is starving for gas. Then after 10-15 minutes it will start barely and to keep it running I have to floor the accelerator. Any other time it starts just fine. There are also no codes causing a check engine light.

ELECTRICAL SYSTEM

After getting gas, the vehicle will not start. It will crank and crank but not turn over, like it is starving for gas. Then after 10-15 minutes it will start barely and to keep it running I have to floor the accelerator. Any other time it starts just fine. There are also no codes causing a check engine light.

Carry Handle, Shell, Base

I have had this car seat for 1 year and 3 days and I just found out that the headrest foam piece came off the plastic base frame(06/26/2025). It has been handled with extreme care and I got it in June 2024. It has stayed in my car and the only reason I found the problem was because I was cleaning them off. It is the third Chicco car seat to have found the foam headrest either broken in half or completely separate from the plastic base in 2 months (2023 & 2024 manufacture dates). There is something wrong with this and I really hope an investigation starts so that others can avoid these issues and potential repercussions from this flaw.

Carry Handle, Shell, Base

I have had this car seat for 1 year and 10 months and I just found out that the headrest foam piece is split in half (06/26/2025). It has been handled with extreme care and I got it in September of 2023. It has stayed in my specific car and the only reason I found the problem was because I was cleaning them off. It is the third Chicco car seat to have found the foam headrest either broken in half or completely separate from the plastic base in 2 months (2023 & 2024 manufacture dates). There is something wrong with this and I really hope an investigation starts so that others can avoid these issues and potential repercussions from said flaw.

POWER TRAIN

Car suddenly began to slip out of gear and have difficulty shifting smoothly. After having car examined by 2 repair shops it was determined the UA80 Transmission needed replaced. Repair shop advised car was not safe to drive with this condition. Warning lights for Check Engine and Check AWD system and traction control came on at the same time as the slipping and rough shifting.

UNKNOWN OR OTHER

Car is shaking heavily when stopped. Several misfires while engaging the brakes. Mechanic is telling me that he has seen many vehicles of this model with faulty purge valves.

ELECTRICAL SYSTEM

Car is shaking heavily when stopped. Several misfires while engaging the brakes. Mechanic is telling me that he has seen many vehicles of this model with faulty purge valves.

POWER TRAIN

The transmission on my Highlander is making a whining noise. I took it to Blackstone Toyota Service for inspection, in Fresno, CA, after my own mechanic inspected it and told me that it was a transmission problem. Toyota told me that the transmission is going out and the car can quit on me at any time and is no longer safe to drive. But since it is out of warranty now they will not do anything to help me with this problem. There has been no warning lamp, message or other symptoms yet. After my service in Nov. 2023 i noticed a slight whine when i accelerated. I had a friend mechanic look at it and he said it could be just because the tires had been rotated. A couple of months ago the whine started on deceleration. I took it to Johnson Auto in Clovis, CA and they were the first ones to tell me it was in fact a transmission problem. I then called Toyota call center and was told that the vehicle needed to be inspected by one of their dealers, and then they could help me. I explained that I didn’t want to go spend more money on the inspection if Toyota would not do anything to help me, I already knew it had transmission problems. I took it to Blackstone Toyota Service Center and they confirmed that the transmission is going out, at only 7800 miles. I called the Toyota call center and was told that since it is out of warranty they will do nothing to help me with this problem. I told them the prior agent I had spoken to said that Toyota would help me. I was told they will do nothing else to help and there was no one else I could talk to about the transmission problems. I was told that they didn’t know of any problems with the 2017 Toyota Highlander and that there were no recalls. I told them that there were lots of complaints about the Toyota Highlander online and I was surprised that they didn’t seem to know anything about the Highlanders having transmission problems. Many people in my same circumstances with expensive repairs way too soon on their Highlanders.

VISIBILITY/WIPER

Driver side interior visor has failed and does not secure in place causing obstruction of view while driving.

POWER TRAIN

My 2017 Highlander XLE AWD had complete transmission failure at 106,000 miles. Toyota has an extended coverage warranty for this but according to them my VIN number was not included even though it failed for the same reason as the recalled transmissions. Loud whining started around 100,000 miles on acceleration around 30mph and continued to get louder. From a dead stop it is very slow to accelerate and misses 3rd gear and jerks. There is a TSB out on this and the extended customer satisfaction extended warranty ZJC but they refuse to cover. I was also told by Toyota corporate that even if my VIN was affected they would not cover due to all maintenance not being done at a toyota dealership. I am the 4th owner and should not be penalized for this. My case number with Toyota is Toyota Brand Engagement Center Case 250416002071

POWER TRAIN

Known issue with the transmission assembly that results in a whining noise and eventually hard shifting and transmission failure. Known issue acknowledged by Toyota across this model and date, but they seemingly are only addressing some vehicles - and not others - with said known issue.

POWER TRAIN

Transmission failure requiring replacement. Known pattern failure from Toyota. Customer support program from Toyota does not cover all affected vehicles.

ELECTRICAL SYSTEM

With 22k miles on vehicle, car won’t start due to Brake power low fault. Battery was replaced in attempt to rectify problem with no success, vehicle will need to be towed in for repair.

SERVICE BRAKES

With 22k miles on vehicle, car won’t start due to Brake power low fault. Battery was replaced in attempt to rectify problem with no success, vehicle will need to be towed in for repair.

POWER TRAIN

Transmission intermittently allows the RPMs to double from 2,000 to 4,000 RPMs. It occasionally displays trouble codes, and exhibits a grinding, whirring noise. An Independent transmission shop confirms that it needs to be replaced. Toyota has issued a recall referred to as Customer Support Program ZJC, but their representatives claim that our vehicle does not qualify, even though the date and model of the transmission clearly Falla under their parameters.

FUEL/PROPULSION SYSTEM

Toyota manufacturing issue-fuel line is manufactured incorrectly-had gas seeping into cab of vehicle and tailpipe. Severe safety issue Steering wheel/column sticks and almost lose control when driving due to a worn out coupler-poor design and manufacturing.