2023 Land Rover Defender 90 Service and Repair Manual

Daytime running lights have both failed within the last 79 days. Passenger side failed at 32660 miles o/a 05 Mar 26. It was replaced under warranty. Driver side failed around 36234 miles on 22 May 26 (5-days out of warranty). It is pending a shop appointment for replacement. This is not a “wear and tear” issue, it is a product quality control issue. It is not a simple plug and play repair. It is a costly repair due to the design of the headlamp assembly. I have owned vehicles since 1988 and last changed a headlamp or taillight bulb in the early 2000’s and that was on a MY93 vehicle

SUPPLEMENTAL TO NHTSA COMPLAINT #11728718 (RECALL 26V248000) On March 2, 2026, my 2023 Land Rover Defender was at a dealership for approximately 3.5 hours for key fob programming. At that time, Jaguar Land Rover had an active service message (SSM76173) related to DC-DC converter failures. Within 24 hours of leaving the dealership, the DC-DC converter failed. The vehicle displayed a “Charging System Fault” warning and became inoperable, consistent with the failure described in my original complaint #11728718. I contacted the dealership immediately with information about the issue. They told

Vehicle: 2023 Land Rover Defender 110 P400 (MHEV) Component Failure: Failure of the 48V DC-DC converter module (L8B2-14B227-AD), which converts 48V to 12V and maintains the vehicle’s 12V electrical system. The component is available for inspection. What Happened: Vehicle displayed “Charging System Fault” and red battery warning. Shortly after, the vehicle became inoperable and left driver stranded. Diagnostics showed: 48V battery retained voltage (~45V) No current output from the 48V system No 12V charging DTC: P065B-16 (Generator Control Circuit Voltage Below Threshold) The DC-DC convert

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 t

DC-DC converter failure. Received dashboard message “Stop safely Electrical fault detected”

Received a stop vehicle, "Electrical Fault". Diagnosed by certified mechanic to be DC to DC Converter fault needing replacement. Estimated 1-2 month backorder due to high demand for parts.

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 cu

DC-DC Converter failed, battery light came on mid-drive and I continued to drive to try and make it to my destination. Car systems started one by one shutting down, first my seat heater then eventually my steering and gas petal. The Vehicle then died and left me stranded in the middle of the road while cars were passing me leaving me unsafe and blocking the road for more than an hour untill a tow truck could arrive. I could have easily been in an accident if I was on a different road do to the steering assist and gas pedal not continuing to work. Making it unsafe for me and many people on th