Jaguar Land Rover just can’t catch a break. After a cyberattack, a fire at a key supplier, and delays to Jaguar’s make-or-break rebrand, the automaker is now dealing with its largest recall since the formation of the modern conglomerate in 2008.The issue centers on the affected vehicles’ 12-volt electrical system, which could lead to a loss of drive power. More than 170,000 vehicles are included in the US alone. That may not sound like much next to the massive recalls routinely issued by Ford or General Motors, but for a company that delivered only about 80,000 vehicles here last year, it’s a sizable hit. The Affected Vehicles JaguarAccording to the recall notice published by the NHTSA on April 17 (recall campaign number 26V248000), the affected vehicles all feature mild-hybrid systems in which the DC-DC converters could fail due to an internal fault in their boost control microchips. This, in turn, would cause a loss of the vehicles’ 12-volt system charging capability, ultimately leading to a complete loss of drive power. That’s because many of a modern vehicle’s critical systems rely on the 12-volt electrical system.The following vehicles are affected: 2019-2024 Land Rover Range Rover Sport 2020-2023 Land Rover Range Rover Evoque 2020-2024 Land Rover Range Rover 2020 Land Rover Discovery Sport 2020-2024 Land Rover Defender 2021-2024 Land Rover Range Rover Velar 2021-2024 Land Rover Discovery 2021-2022 Jaguar E-Pace (mild-hybrid versions only) 2021-2024 Jaguar F-PaceUnfortunately, the remedy is still being developed, though owners can continue driving their vehicles in the meantime. If the issue does occur, the warning message “Stop Safely Electrical Fault Detected” will appear on the dash, instructing drivers to pull over safely. If the warning is ignored, additional system-failure alerts may follow, and the vehicle will eventually shift into neutral with a gearbox fault message. At that point, the engine will shut down, and the battery will no longer have sufficient charge to keep any electrical systems running.Land RoverJLR said it will begin notifying owners by mail starting June 12, with additional letters to follow once a remedy is available. Owners seeking more information can contact JLR at 1-800-637-6837 or visit the company’s recall page (link below). The automaker’s previous largest recall came just last year, when 121,500 vehicles were recalled over a suspension fault. JLR's Other Troubles JaguarAlthough Jaguar Land Rover has managed to move past last year’s major cyberattack, which brought production to a halt for roughly six weeks, and a more recent fire at a Norwegian supplier that triggered another two-week shutdown in March, the company still faces major headwinds surrounding its Jaguar rebrand. As has been widely documented, Jaguar effectively wiped the slate clean last year, ending production of its entire lineup and stopping new orders altogether as it cleared out existing stock in preparation for a trio of high-end electric vehicles, headlined by a large grand tourer previewed by 2024’s Type 00 concept.That new GT, whatever it ultimately ends up being called, will be significantly more expensive than any Jaguar before it, and that has some dealers nervous about where it fits in the market. It’s also behind schedule, having originally been promised for a debut last year and now unlikely to arrive until sometime later this year. Still, it should be worth the wait as Jaguar has hinted that at least one version will have up 1,000 horsepower and as much as 400 miles of range.