Lincoln Navigator overheating problems

Filed Mar 9, 2026 · Electrical, Engine · VA

The vehicle has experienced repeated mechanical failures involving the engine, cooling system, drivetrain, and electronic systems. Documented failures include the navigation/APIM module, transmission jerking and drivability issues, transmission valve body concerns, cam phaser failure, driveshaft repair, front wheel bearing/IWE failure, coolant leaks from heater core hoses, and engine vibration requiring extensive diagnostic work including a short block engine repair. The vehicle has also experienced multiple overheating incidents despite prior repairs. Overheating occurred in May 2025, December 2025, and February 2026. During these events the engine temperature rose abnormally and coolant had to be added to the reservoir. Drivetrain problems including transmission jerking, vibration, and driveshaft repair also created drivability concerns while operating the vehicle at highway speeds. These issues have been inspected and confirmed by an authorized Lincoln dealership service department. Numerous repairs and diagnostics have been performed including APIM replacement, cam phaser repair, heater hose replacement, wheel bearing/IWE replacement, driveshaft repair, and engine diagnostic work approved through warranty processes. Symptoms prior to failures included overheating, vibration, excessive fan noise, whining while driving, and transmission jerking. The vehicle and components are available for inspection upon request. The repeated overheating events combined with drivetrain and engine failures raise concern that this vehicle may have an underlying safety-related defect that could result in sudden loss of power or engine failure while operating in traffic.

Filed Jan 12, 2026 · Electrical · IL

I am reporting a serious safety concern involving a 2021 Lincoln Navigator with factory equipment only. After snowfall, during factory remote start, the vehicle produced a hot/burning smell, and I observed visible melting and bubbling of multiple driver-side and passenger side exterior pillars. The vehicle has a factory sunroof and no aftermarket electronics or modifications. The melting appears on the exterior, indicating heat originating from inside the pillar cavities. Due to concern for electrical overheating and fire risk, I discontinued using my remote start. A Lincoln dealership dismissed the concern and incorrectly stated that there is no electrical wiring in the pillars. Lincoln Customer Care has verbally refused assistance solely due to lack of extended warranty and has declined escalation, despite the reported fire risk. I am concerned this involves water intrusion from the sunroof drainage system contacting powered body or airbag wiring, creating a risk of electrical fire. I am requesting the federal safety agency review this as a potential safety defect involving electrical overheating and fire risk.

Filed Jan 1, 2024 · Transmission · FL

Driving vehicle for an approximately 70 miles highway trip, the vehicle was experiencing some hard shifts/poor shift quality prior to overheating. Temperature in vehicle for the transmission was reading 237 degree Fahrenheit when we stopped at a light after exiting the highway. We noted smoke and saw oil on the exhaust, which is a concern for fire. We noted a burning smell as well. Rear hatch of vehicle was sprayed with fluid, which we think is transmission fluid, causing a visibility concern out the rear windshield. The transmission had been previously rebuilt and a prior complaint filed. There were no error messages displayed in the vehicle. I have attempted to contact the dealership but they are closed on 1/1/24. I reached out to Lincoln Concierge and filed a complaint.

Filed Dec 31, 2023 · Transmission · FL

Vehicle set on adaptive cruise control, car accelerated to get back up to set speed and had a hard "clunk" sound. Driver turned off cruise control and attempted to accelerate vehicle. Vehicle tachometer revved up, transmission didn't shift properly, still shifting hard or not shifting at all. Once stopped, driver of vehicle found the back of the car covered in what appeared to be ATF and what appeared to be ATF leaking under the car. Took car to dealership for inspection, transmission rebuilt. Per tech that rebuilt transmission, it overheated. No warning lights came on, the transmission temperature displayed on the vehicle was 215 degrees Fahrenheit at time of incident.

Filed Nov 15, 2023 · Engine, Fuel system · SC · fire

Connector for cooling hoses blew out causing engine to overheat and stand my family on the highway. This appears to be a common problem that someone did a YouTube video on it. I have put the video link below. Please have them recall before someone gets hurt. Ford Lincoln does not respond. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 19, 2023 · Steering, Suspension · TN

2019 Lincoln Navigator Dealership delivery 9.14.22 Husband & Daughter drove around the neighborhood. Check engine light comes on suv is overheating. Husband immediately pulls into our driveway fluid is leaking out all over. Plus smoking. This was maybe two hours after it was in our possession. 9.15.22 Ford of Dalton has it towed to their dealership. 9.15.22 Suv was back in our possession. 9.21. Heard a ticking sound from the front of the suv. 9.26.22 Dropped off Suv at Ford of Hixson. 10.1.22 picked up a rental. 10.7.22 picked up suv 12.7.22 Contacted Ford Of Dalton. Hearing the same noise, plus a new clunking sound and movement below my feet on the driver side.They replaced axle, barrings. No warning other than the sound. 12.12. 22 Suv in Ford of Dalton possession. 1.12.23 Suv back in our possession. 1.13.23 hearing a sound when turning left. No warning 1.13.23 drove off a mountain where we live to take my daughter to her basketball game. Approximately 7:10 p.m my daughter and I heard a loud sound. The suv pulled us left into oncoming traffic! My suv steering wheel lost control started smoking and smelt like burning rubber!! This was the most terrifying experience in my life!! We are so lucky to be alive! If this happened anywhere else the outcome could have been very different. Luckily we were just leaving her basketball game and we’re on a side street.This suv was supposed to be our primary vehicle. It is extremely unreliable and unsafe to drive. After last nights horrible experience there is no way we will take this vehicle back. It’s very unsafe to drive. ** no warnings!

Filed Jul 2, 2022 · Engine · NV

engine temperature warning light came on. engine coolant leaked out. engine die while we were waiting for help on the side of I-15 freeway. The vehicle is now at Lincoln dealership for repair. They also told me that there is a faulty fuel pump code that they are looking at. They told me that the factory did not place a water hose in the properly designed placement. The truck die at about 500 miles after taking delivery from the dealer on 6/23/22 evening. It was tow from Baker to Henderson on 6/26/22.

Filed Jan 5, 2022 · Engine · LA

Coolant leaking

Filed Jul 6, 2017 · Brakes, Fuel system · 68,000 miles · TX · fire

Tl* the contact owns a 2006 lincoln navigator. While the vehicle was stopped, the contact smelled burning rubber and plastic. The contact noticed smoke and flames emerging from both the front driver and passenger sides. The fire department was not called and the contact extinguished the fire. A police report was not filed and there were no injuries. The vehicle was towed to bayway lincoln (12333 gulf fwy, houston, tx 77034) where it was diagnosed that the fuel and brake lines had overheated and caught fire. The vehicle was not repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 68,000.

Filed Oct 28, 2014 · Brakes, Engine · 118,000 miles · WA

Tl* the contact owns a 2001 lincoln navigator. While driving at an unknown speed, the vehicle overheated and exhibited numerous other mechanical issues. The contact stated that the tires were bald, the air bag light illuminated, and the brakes failed to operate. The vehicle was taken to a dealer. The technician diagnosed that the brakes, tires, and parts of the engine needed to be repaired. The manufacturer was not notified of the issue. The approximate failure mileage was 118,000.