2023 LAND ROVER DEFENDER Electrical System Problems

The contact owns a 2023 Land Rover Defender. The contact stated that while driving approximately 55 – 60 MPH, the vehicle suddenly shuddered and vibrated with several unknown warning lights illuminated and flashing before the vehicle abruptly stalled and lost power in the middle of the freeway. The vehicle lost steering and braking functionality and was unable to accelerate. The vehicle failed to restart. The contact stated that several vehicles almost crashed into the rear of the vehicle, and a semi-truck came to a screeching halt behind the vehicle. The contact experienced an extreme panic attack and severe anxiety during the failure. The Emergency Services were called to the scene and with the help of the Fire Department, Police, and Ambulance Services, the vehicle was moved from the roadway to safety. The vehicle was later towed to the local dealer who diagnosed the vehicle and determined that the DC-to-DC converter...

An electrical component called the DC DC converter failed in my 2023 Land Rover Defender. I discovered the failure after starting the car after work. A warning that the battery was not charging presented itself. I didn't think it was a major issue and could be something reset easily. I was able to get the car home safely but shortly after the car was completely non functional and could have potentially shut down right on the interstate on my drive home. Currently my car has been at the dealership for over two weeks waiting on a new converter because it is on backorder. This part is quite fragile and its failure can leave drivers stranded on the highway.

The dc dc converter failed and had to be towed away. The incident happened while I was driving the vehicle.

Vehicle was started, while still in park, an alert appeared on the dashboard “stop safely electrical fault detected”. Vehicle was turned off and restarted, with the same warning light on. Called LR dealer, Vehicle was backed out of garage at service advisors advice, parked and flatbed tow truck called.

While driving on the freeway I recieved and elctrical fault detected please pull over when safe. The issue is the DC to DC converter failed resultign in the loss of charging for the car and relaince on stored elctricity in the battery to drive systems. I was on the highway at freeway speeds and had to exit the highway quickly to avoid the vehicle completly shutting down on the freeway. The dealer has verified the issue. There is significant discussion on owner boards about the numerous failures across all years of the mhev defender resulting in owners being stranded on the side of the road. Land Rover needs to issue a recall to replace this defective part.

DC/DC converter failed on the 2023 Land Rover Defender about 2000 miles out of warranty. The parts are on back order with no ETA because so many LR Defenders are having this issue. This can cause your car to die while driving.

DC-DC converter has failed causing the car to shut of while driving. During this period of time the car shuts off and the steering wheel locks. Seems to be a massive problem as every dealer we call doesn't have the parts to repair and are quoting months to fix the car.

The DC/DC converter failed when I turned the car on and I received a warning. Drove straight to the dealership to drop it off for service. Reviewing others with this issue online, it is an extremely common problem and no recall has been issued. Many report their cars dying in the middle of nowhere. To make matters worse, there is a long backlog for the part, months for some people. I’m waiting to hear back from the dealer on my wait time. I hope by submitting a report that you will consider requiring Land Rover to issue a recall.

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...

While driving my Defender 130 at Highway speed a warning for a faulty electrical system light came on. Within a mile while I was trying to exit the highway, all electrical systems failed. I had a gearbox failure warning and the car went into neutral at highway speed. Power steering failed and I had to manhandle the vehicle off the road into a snow drift to get off the highway.

Car only has 42K miles on it- we were driving down the highway at approx 75mph, when the dash alarms started going off indicating an electrical system failure. A few minutes later all systems started flashing failures (lane keep assist system, braking system, etc)....then suddenly the gear box system failure alerted and the gears disengaged, the RPM's shot up and red-lined, and the CAR lost power in the middle of the highway. Fortunately we were able to get off to the shoulder without getting hit by a semi-truck. The car was completely dead. It had to be towed to a dealer, to find out that the DC/DC converter had failed- and these parts have been on back order for months- apparently this is a common issue with these cars, and people have been talking about it online...many have been without their car for 3-4 months waiting these parts.

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...

The car completely died. Unable to be jumped. Had to be towed. There’s a problem with the DC/DC converter. The parts going to take at least 3-4 weeks to come in. My dealer states they have over five or six vehicles waiting for the same repair. This should be a recall issue!

On December 29th 2025 my car displayed an alert "Electrical Fault Detected: Please Pull Car Over Safely". I was in rural New Hampshire at the time so continued driving (for about 5 minutes) until I lost all power steering, stability controls and ability to drive the car - luckily by this point I had made it to Gorham, NH. Luckily it was just me in the car and not my family as the temps were below 10 F that day and Land Rover couldn't get a tow until the next day. Since then the car had to be towed to Land Rover Bedford and has been in the shop since as they dont have any DC Converters (Part number 433123464) in the US. Apparently there are 1400 Land Rover Defenders all sat in garage lots as nobody can get this part in the US from the manufacturer. There is no...

The contact owns a 2023 Land Rover Defender. The contact stated that while driving at undisclosed speeds, the vehicle shut off unintendedly. There was an unknown electrical warning light illuminated. The vehicle was towed to the local dealer, where it was diagnosed with a failure with the DC converter Part Number: 433123464. The contact was informed that the part needed to be replaced. The vehicle was not repaired because the part was on backorder. The manufacturer was not contacted. The approximate failure mileage was 61,000.

The DC/DC converter failed causing the generator not to charge. This caused the car to lose all power whilst I was driving the vehicle and come to a complete stop on an active road.

A known LR Defender MHEV system problem. Specifically, a DC-DC converter failure - while driving vehicle on busy highway. Failure systematically shuts down vehicle. Please refer to: Land Rover Charging System Fault: The DC-DC Converter This is a serious safety issue. The Defender becomes completely disabled while driving.

DC Converter for Hybrid system malfunction with complete battery discharge rendering the vehicle inoperable while utilizing. Lucky that the occurrence occurred in low traffic area! Unable to move vehicle onto flat bed truck because of electrical controlled gears. Unable to secure vehicle because of electrical controlled door locks. Replacement product on back order -estimate at least 6 weeks.

Powerconverter failure. Repair part unavailable Constant coolant leak (documented more than 4 repair attempts since purchase.

The Defender is only 2 years old, with 59k miles. Outside of warranty. It is a mild hybrid. Received an emergency electrical fault issue. Car stalled out. Had to get it towed to dealership. Its been with the dealership for a month now, with another month anticipated for the part, a dc converter, which is on backorder with LR to be delivered. Battery is dead also. Total repair is estimated at $3100. I will be without the vehicle for atleast 2 months. Looking through the internet it appears this is an issue with LR. Filed a complaint with LR corporate. They are aware of this happening also to vehicles which would explain the backorder on the part. No recall yet however.

My car died on December 14, 2025 when I was pulling out of my driveway. It read “stop safely electrical fault detected.” And then shut down and would not turn on. Then it said “battery low. Please start engine.” But the car would not start. I had to get it towed to the dealer. They told me it was a the DC converter or the epic module. They said this is a company wide issue with the 2023 defenders and they do not have the part in stock and that it is on back order. Right now they are stating that the part may be in in mid February. Previous to this issue I also had issues two times with my car stating engine coolant issues and had to bring it to the dealer two times to get fixed.

The door actuators are failing which is a very common problem on these vehicles. This fault makes it impossible to lock the doors and arm the vehicle. This is a significant safety issue. Based on the widespread complaints it seems reasonable that Land River should rectify the problem

Infotainment screen randomly goes black while driving. Does not come back on. This screen displays and controls everything for the vehicle. Maps, system info, music, etc. Instructions to "reset" the system consists of reaching toward the passenger side of the dashboard to hold down a power button for about 30 seconds. I have done this multiple times, it's not safe. You are stretched out across your vehicle, trying to pay attention to indicator lights, while you also need to pay attention to the road.

the lighting on the 2023 Defender 110 is not adequate, particularly at dusk and in the evening. The brightness control does not adjust for the brightness needed to see gauges. This is a safety risk.

The Centre Cluster dims a dusk and is not visible to the driver

The media screen will randomly go blank so you can not see your navigation map, radio information or any other data that the screen should show. The dealer told us to press the door lock twice and wait several minutes before restarting. Very unsafe if emergency is occurring and you do not have access to navigation system. This has occurred several times since we purchased the vehicle new on March 18 at Buckhead Range Rover in Atlanta. the phone charger does not work and only heats up your phone after you lay the phone on it for a period of time.