2023 Land Rover Defender engine problems

Filed Oct 28, 2026 · Engine · 43,000 miles · NY

The contact owns a 2023 Land Rover Defender. The contact stated that while driving 67 MPH, the vehicle lost automotive power, and all electrical features shut off. The vehicle was towed to a dealer where it was diagnosed, and the contact was informed that the failure was not duplicated. The vehicle was towed to another dealer to be diagnosed, and the contact was informed that the failure was not duplicated. The manufacturer was notified of the failure. The failure mileage was 43,000.

Filed Oct 19, 2026 · Electrical, Engine · CO

A warning sign appeared stating the battery was not charging (something like that). When I turned off the car, another warning said to keep the car turned on the battery was low. I kept the car on and began to drive home, very quickly more warnings appeared, power was diminished, so I pulled into a parking lot and the car completely stopped. Tried to turn engine back on to get it into a parking spot, It would not start. Could not put the care in neutral to push it out of the way. Tried to put my hazard lights on, but they would not turn on. Had it towed to a shop, they told me it was a recall, towed it to JLR (Flatirons), and there it sits. Called JLR USA, they told me not to drive it until the recall repair is made, and it looks like January 2027 is the date there will be a fix.

Filed Jun 17, 2026 · Electrical, Engine · TN

The DC/DC converter failed and caused the vehicle to immediately lose all power at a main intersection. My wife was driving the vehicle when this happened with out two children in the vehicle as well (ages [XXX] and [XXX]. Luckily, she was able to somewhat get out of intersection of a very busy road. The vehicle had to be towed to the Land Rover dealership. The part was covered by a factory extended warranty. There is an active recall for this part; however, this vehicle does not show to be in the recall. Since this part did fail, I wanted to file a complaint since it is not in the recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 19, 2026 · Electrical, Engine · VA

The vehicle experienced a sudden and complete electrical failure while driving, related to the DC converter. Warning lights did appear prior to the failure; however, I was driving down a mountainous road and do not recall the exact messages. Shortly after, the vehicle shut down and lost power, causing it to roll to a stop in active traffic. At the time of the incident, I was partially in the roadway and unable to safely move the vehicle out of traffic. The vehicle became inoperable and could not be restarted. I had two children and two dogs in the vehicle at the time. The vehicle had to be towed approximately two hours back home. The required part was on backorder for approximately two months due to so many vehicles having the issue, leaving my vehicle unusable for an extended period. This issue creates a serious safety hazard due to the sudden loss of propulsion and inability to move the vehicle out of traffic. Based on my research, this appears to be a known issue affecting multiple Land Rover Defenders. In attempting to locate the part sooner, we contacted several Land Rover dealerships, all of which indicated they had numerous Defenders awaiting the same repair due to part availability.

Filed Mar 3, 2026 · Electrical, Engine · NY

While driving the dashboard suddenly showed a message saying Battery Charging Fault error” a few minutes later the car stopped driving while I was on a busy freeway. It had no power and it displayed several messages saying suspension system is disabled, battery issue, cameras disabled. I had try to navigate my rolling car to a side lane to call roadside assistance. It was a very dangerous incident and needs to be addressed. Land Rover in White Plains NY, diagnosed my vehicle saying the Dc to Dc converter needs to be replaced and they don’t have any in stock. They also mentioned they have 30 customer cars all waiting for the same part. This was scary and I’m grateful my children were not in the vehicle at the time.

Filed Feb 26, 2026 · Electrical, Engine · NY

Car suddenly stopped and lost all power due to DC DC converter issue

Filed Feb 10, 2026 · Engine · 97,000 miles · MD

The contact owns a 2023 Land Rover Defender. The contact stated that while driving at an undisclosed speed, there was white smoke coming from the engine compartment. The message to “Add Coolant” was displayed. The coolant was added to the coolant reservoir; however, the failure reoccurred. The contact was constantly adding coolant; however, there were no coolant leaks found. The vehicle was taken to an independent mechanic; however, the cause of the failure was not yet determined. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact referenced an unknown recall; however, the VIN was not under recall. The dealer was made aware of the failure and informed the contact that the vehicle needed to be diagnosed. The manufacturer was not made aware of the failure. The failure mileage was approximately 97,000.

Filed Feb 4, 2026 · Electrical, Engine · FL

While driving the vehicle warnings alerted me that the battery was low and to start the vehicle ( it was running as I was driving) then the alert changed to pull over when possible. At this time the power steering and power brakes started to fail by the time I pulled into a parking lot the vehicle completely died and I had to push it into a parking spot. I called Land Rover they towed it to a dealership. The dealership in Orlando Florida said that the DC to DC converter failed and that it would need a new one (but the part is on a back order because it’s a common issue and they have no idea how long it will take to get the part) it will take at least 30 days or more to get a new part. Before I managed to pull over in a safe location the steering became very heavy and the brake pedal got very hard and barely stopped the vehicle ( almost had a collision) and steering into the parking lot was extremely difficult.

Filed Jan 31, 2026 · Electrical, Engine · MA

I own a 2023 Land Rover Defender 130 that I purchased brand new. Since buying it, it has been back to the dealer many times for serious issues. The vehicle has had repeated cooling system failures, including replacement of all upper coolant hoses. Most recently it was at the dealer for coolant loss / no coolant, and the dealer diagnosed failed O-rings going into the turbo and repaired it. I was told this is a common issue but there has been no recall. Shortly after getting the vehicle back, while traveling with my family, I received a dashboard warning: “Stop safely – electrical fault.” Immediately after this warning, the vehicle lost power and died in the street with my family in the car, creating a major safety hazard and risk of being hit by traffic. The vehicle had to be towed. I am currently stranded in NY (away from home in MA) and the vehicle is now at a dealer here. It has been difficult to even get it seen by a technician, and we are supposed to return home tomorrow (Sunday). I have learned many other owners are experiencing similar “Stop safely” failures and it appears related to the P400 DC/DC converter. There have also been incidents where the steering wheel would not turn, and the only way to restore function was disconnecting the negative battery terminal to reset the vehicle computer, which is extremely dangerous. Additionally, the heated steering wheel overheated and burned a hole through the steering wheel and burned my hand while driving. The dealer replaced it under warranty, but the repair notes suggested the damage caused the heater issue, when the damage occurred because of the overheating/burn. This vehicle has had repeated safety-related defects involving the cooling system, electrical system, steering, and heated steering wheel, including sudden shutdown in the roadway with passengers. I request the federal safety agency investigate for a potential recall.

Filed Jan 30, 2026 · Engine · NY

Stop safely electrical fault detected appeared on dash DC failure Vehicle is not drivable