DC/DC converter failure causing vehicle shutdown
ELECTRICAL SYSTEM
21 NHTSA complaints · 2025-12 → 2026-08
“On 4/2/2026, my DC to DC converter failed in my 2022 Landrover Defender (owned 3 months, purchased pre-owned from dealer), which short-circuited both my 12V battery and my telemetric safety battery (location services, and emergency calls). The vehicle lost all power, completely…”
“DC to DC converter failure that displays a RED warning indicator that says "Stop Safely Electrical Fault Detected" with a red battery indicator symbol displayed simultaneously. I called the dealer as this is the 3rd time I have experienced similar electrical issues that have…”
“Lost all power due to failure of DC/DC Converter, Part # 433123464 (or LR131043). This problem is widespread and the replacement parts are on backorder. Land Rover cannot provide an ETA for delivery of parts to dealerships as of 1/30/2026. This failure occurred immediately and…”