Symptoms
'Stop – electrical fault detected' with a red battery light, the 12-volt battery not charging, and possibly loss of drive. Often no stored faults, and it may clear itself before coming back.
The fix, step by step
- Check first whether NHTSA recalls 26V248000 and 26V599000 (US) have been done.
- It adds a central software update to stop the converter overloading, and it's free.
- If the converter has already failed, it has to be replaced and then programmed to the vehicle, so use a dealer or a JLR specialist with the right software.
- Parts have been back-ordered, so plan on the truck being off the road for a while.
Tools & part numbers
- JLR-capable diagnostic and programming tool
- replacement DC-DC converter module
Where to buy the parts
L460 DC-DC converter (search; needs dealer programming)Atlantic British ↗
Hunting a used or discontinued part? Search eBay Motors for Land Rover Range Rover L460 parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.