2018 Ford Explorer: engine overheating

Filed Jul 10, 2026 · Engine · MI

While driving at highway speed on a 2-lane highway with three children under the age of [XXX] in the vehicle, my 2018 Ford Explorer experienced sudden complete engine failure with no prior warning. No warning lights, no temperature gauge change, no unusual sounds. The vehicle went from operating normally to catastrophic failure instantaneously, forcing me to sharply cross active traffic to exit the roadway. The vehicle came to rest near a train track. The root cause was internal water pump failure. Ford's design places the water pump inside the engine, causing coolant to leak internally with no external indicators and no dashboard warning until catastrophic damage has already occurred. Ford did not install a coolant level sensor in the reservoir, and the only coolant warning available is an overheating alert, which never triggered. I had taken every reasonable precaution. Two thousand miles prior, an oil change showed no coolant contamination. One week prior, I physically checked the coolant level and it was within safe range. Ford's design gave me zero opportunity to detect or prevent this failure. This is a known recurring issue. Over 86 engine complaints have been filed with the federal safety agency for this model year alone and Ford has been aware of this defect since at least 2007. Despite class action litigation in both Canada and the United States, Ford has not issued a U.S. recall. Repair costs exceed $9,000. I am requesting the federal safety agency open a formal investigation and compel Ford to issue a U.S. recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 19, 2026 · Transmission · IL

Vehicle: 2018 Ford Explorer Mileage at Failure: 62,212 miles On [XXX] while driving my 2018 Ford Explorer, the wrench warning light suddenly illuminated on the dashboard. At the same time, the vehicle experienced a significant loss of power and became extremely sluggish in acceleration. When I pressed the accelerator pedal, the vehicle failed to respond normally and did not accelerate as expected. This condition created a serious safety hazard because the vehicle could not maintain or increase speed when needed in traffic. Had this occurred while entering a highway, crossing an intersection, or attempting to avoid another vehicle, it could have resulted in a crash. The vehicle has been inspected by McCarthy Ford. The dealership diagnosed transmission-related problems and provided a repair estimate of $6,384.94. Ford Motor Company previously issued Customer Satisfaction Programs 20B27 and 20N07 for certain Ford Explorer vehicles equipped with the 6F35 transmission. Ford's own documentation acknowledges that transmission torque converter overheating may result in low performance, lack of acceleration during launch, sluggish vehicle operation, vibration, shuddering, and related transmission concerns. These symptoms are consistent with the condition experienced in my vehicle. I reported the issue to Ford Motor Company and sent a certified letter to CEO James D. Farley, Jr. requesting assistance and a policy adjustment due to the known transmission and torque converter concerns. To date, I have not received a satisfactory response. I am submitting this complaint because the sudden loss of acceleration and reduced vehicle power created a significant safety risk while operating the vehicle on public roadways. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jun 16, 2026 · Engine · CA

My vehicles transmission has been replaced 2 times already (3 years apart)- now it is overheating. Absolutely no warning lights have came on at any time in regards to any of my situations - My vehicle is available for inspection at any time. When the transmission went in my vehicle, I was traveling on an interstate with my child. The dealer has confirmed replaced the transmission as it was still under the 5 year warranty - my vehicle is set to go back into the shop today to be inspected as to why it is overheating.

Filed Apr 17, 2026 · Engine · NY

I purchased a 2018 ford explorer with the 2.3l 4 cylinder enginge in 2023. Withihn a year of my engine started to have issues hesitating when accelerating. Then it overheated and I realized my coolant was disappearing but wasnt pooling anywhere.. It was evaporating because it was leaking into my spark plugs. When I changed plugs I noticed oil or coolant on two of them I called ford about it because my engine has a pending lawsuit for this problem it kept getting worse . I dont have the money for the repairs and I asked them if they could do a good faith repair and I was denied. As of 4/16/2026 my engine failed and my coolant is filled with oil because of the defective engine that they knew about since 2010

Filed Nov 25, 2025 · Engine · FL

In November 2023, our SUV started to over heat and engine shut off. We noticed the coolant reservoir was bone dry. We added coolant. It was bone dry again within a couple days. We had a mechanic friend diagnose and he told us it is the water pump. We took it to the Ford dealership and we were quoted $3000 to repair it. We could not afford this, so thankfully we met a mechanic that works at dealerships but also repairs on the side. He fixed it for $1000. Flash forward to November 2025 and we notice the heat in our car is not working. Couple weeks later, overheat warning and I'm forced to pull over with my 3 children in the car on a busy highway. Once car cooled down, we went straight home and forfeited our plans. Notice the reservoir is empty again. Refill it. It's empty within a few days. Come to find out, it's the water pump again and Ford dealership wants $4400 this time to fix it and our friend who fixed it last time wants $2000 to fix it. He had another Ford Explorer currently in his shop with the same problem. He said it will continue to fail. We are at a loss. Car overheats almost immediately and loses coolant almost immediately. Ford should HAVE A RECALL ON THE WATER PUMP. Why does the engine have to be pulled out to replace the water pump that is just going to fail every 2 years. I have bought Ford since 2008 and swore I always would buy Ford. I have had 3 Ford vehicles. This experience with this vehicle and the Ford dealerships has changed my opinion. I will never buy Ford again. We are only at 125,000 miles and bought vehicle BRAND NEW in 2018-- so 7 years... just 7 years!

Filed Aug 18, 2025 · Electrical, Transmission · 155,000 miles · TX

The contact owns a 2018 Ford Explorer. The contact stated that while operating the vehicle, the engine overheated, and the vehicle stalled. The contact inspected the vehicle and discovered that the serpentine belt had failed. The contact replaced the serpentine belt, and the vehicle was repaired. Later, while operating the vehicle, several electrical warning lights were displayed. The battery was replaced, but the failure persisted. The contact replaced the alternator; however, after replacing the alternator, the transmission remained stuck in park(P), rendering the vehicle undrivable. The cause of the failures was not yet determined. The manufacturer was notified of the failure. The local dealer was not contacted. The failure mileage was 155,000.

Filed Jul 28, 2025 · Engine · AR

Engine light turning off and on. Engine overheating light on. Told by Ford dealership that I need engine replacement.

Filed Jul 2, 2025 · Engine · WI

I am writing to formally report a significant mechanical issue involving the water pump in my 2018 Ford Explorer with the 3.5L V6 engine. This vehicle recently experienced a sudden failure of the internal water pump, a problem I have since learned is common across this model and others using the same engine design. In my case, the water pump failure occurred just outside of the vehicle’s extended warranty coverage, leading to engine overheating and a substantial repair cost. What makes this issue particularly concerning is the design flaw in which the water pump is located internally, driven by the timing chain. When the pump fails, it can leak coolant internally, potentially leading to catastrophic engine failure without warning. This design not only makes the part extremely costly to repair (often $2,000–$4,000 or more), but it also introduces a serious safety risk—drivers may experience engine overheating or seizure while on the road, with minimal to no warning. This poses a clear hazard, especially at highway speeds or in high-traffic situations. I understand that many other Ford owners have reported similar failures, yet no recall or Customer Satisfaction Program (CSP) has been issued to address the problem. Given the frequency of these incidents and the potential danger involved, I respectfully request that the federal safety agency investigate whether this condition qualifies as a safety-related defect. I have included my vehicle details below for your reference: Make/Model/Year: 2018 Ford Explorer Engine: 3.5L V6 (non-EcoBoost) Mileage at Failure: 101345 Failure Description: Internal water pump failure leading to coolant leak and overheating Repair Estimate: $4511.19

Filed Jun 25, 2025 · Engine · GA

The contact owns a 2018 Ford Explorer. The contact stated while driving at an undisclosed speed, the engine overheated, with the warning light illuminated. The contact parked the vehicle and refilled the coolant reservoir. In addition, the contact stated that the coolant reservoir was repeatedly refilled weekly. The vehicle was taken to an independent mechanic where it was diagnosed with a coolant pump failure and a slow coolant leak. The contact was informed that the coolant pump needed to be replaced. The vehicle was not repaired. The vehicle was then taken to the dealer where it was diagnosed with coolant pump failure. The contact was informed that the coolant pump needed to be replaced. The vehicle was not yet repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown.

Filed Jun 16, 2025 · Engine, Transmission · 119,000 miles · SC

The contact owns a 2018 Ford Explorer. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic who diagnosed the vehicle and retrieved DTC: P0303 (Misfire in cylinder #3). The vehicle was not repaired. The contact took the vehicle to the dealer, who confirmed the failure. The dealer replaced the spark plugs and ignition coils. The contact stated that the failure persisted. The contact stated that on a separate occasion, after the contact had the tires serviced, and the engine overheated. The vehicle was taken back to the dealer and was diagnosed with coolant intrusion into the cylinders, causing engine failure. The contact was informed that the torque converter and engine needed to be replaced; however, the vehicle was not repaired for the most recent failure due to the cost. The contact stated that the failure persisted. The manufacturer was not made aware of the failure. The approximate failure mileage was 119,000.

Filed Feb 15, 2025 · DE

I purchased the 2018 Ford Explorer and it worked fine there were no issues when I bought it on 7/8/2024 as of 2/14/25 the coolant leaks and I have been adding coolant like crazy. Are there any defective parts on the 2018 Ford Explorer? I had only a 90 day warranty through CARMAX.

Filed Feb 5, 2025 · Electrical, Engine · NY · fire

The High-Speed Cooling Fan Motor Relay (Recall 21N01) and the Exterior A-Pillar Apical Molding (Recall 24V031) failed on my vehicle. The cooling fan caused the engine to overheat repeatedly, and the vehicle became undrivable. Unfortunately, I no longer have the vehicle, as it was surrendered to my bank and later sold at auction. However, service records, diagnostic reports, and recall information are available upon request. The overheating engine presented a significant safety risk while driving, as it could have caused the vehicle to stall or catch fire. A AAA roadside technician confirmed that the vehicle was unsafe to drive due to the overheating issue. This defect left me stranded, requiring alternative transportation and creating a hazard for others on the road had I continued driving the vehicle. Yes, the problem was confirmed by a AAA roadside technician, who performed a diagnostic scan and identified that the engine overheating was due to a defective cooling fan relay. The issue aligns with Recall 21N01. The molding defect (Recall 24V031) was not specifically inspected, but it was noted as part of the recall documentation. No, the vehicle was not inspected by Ford or any other representatives after the issues arose. I checked Ford’s website in February 2024 and learned about the recalls, but I was never notified by Ford about these safety defects while I owned the vehicle. AAA provided the only diagnostic assessment before I surrendered the vehicle to my bank. Yes, there were symptoms prior to the failure. The vehicle’s engine temperature warning light came on repeatedly, and the battery required constant recharging. The overheating symptoms first appeared in February 2024, and the vehicle became completely undrivable the next day.