.png)
Recall Date: 9/17/2026
NHTSA ID: 26V599
Mfr. Campaign Number: E008
Manufacturer: Jaguar Land Rover North America, LLC
Affected Components: DCDC converter, vehicle load balancing software
Potential Number of Units Affected: 23,677
Which Jaguar and Land Rover vehicles are affected?
The recall spans nine model lines across two brands:
Range Rover Sport accounts for the largest share of the population at 10,973 units, followed by Defender at 8,100 and Range Rover at 3,849, with the remaining six nameplates each contributing anywhere from 3 to 552 units. JLR determined the population through a combination of field data analysis and AI modeling, scoping it to Mild Hybrid Electric Vehicles built through the end of the 2024 model year, and excluding vehicles with an earlier DCDC converter specification already covered under prior recalls D126 and H575. The estimated percentage with the defect is 100 percent.
Two separate issues sit inside this campaign. Insufficient electrical load balancing during periods of high demand can overload and malfunction the DCDC converter, and a separate software bug can also cause the converter to stop functioning at startup under certain circumstances. Either failure knocks out 12V system charging. Drivers first see a "Stop Safely Electrical Fault Detected" warning, and if the vehicle keeps being driven, more warnings follow, the vehicle loses motive power and coasts to a stop, and it eventually loses exterior lighting as well. A loss of motive power or lighting on the road raises the risk of a crash.
What drivers need to know
The remedy is a software update. It corrects the load-balancing behavior during high demand, fixes the startup bug, and adds a protective "limp-home" mode that warns the driver and derates power if the DCDC converter goes offline for any reason, at no charge to the owner. The filing doesn't check a Do Not Drive or Park Outside box, though the onboard warning system itself instructs the driver to stop safely once the fault appears. Dealers are expected to be notified on October 1, 2026, with owner notification letters going out on or before November 13, 2026.
Jaguar Land Rover recall background
This is JLR's second DCDC converter action this year. The first, campaigns D126 and H575 filed as NHTSA recall 26V-248 in April 2026, covered an earlier converter specification. JLR's Product Safety and Compliance Committee kept investigating after that filing, and hardware stress testing through the summer found no evidence that later, phase 2 converters were routinely susceptible to the same failure mode. On July 14, 2026, the investigation shifted its primary focus to software after engineers couldn't reliably reproduce the failure in hardware, and JLR began a forensic, line-by-line review of the vehicle's software code in parallel with continued rig testing.
Through the rest of the summer, JLR also developed an AI model aimed at predicting future failures. On September 8, 2026, the Product Safety and Compliance Committee heard that the model had been trained and validated at scale, and that phase 2 converters built through the end of the 2024 model year were predicted to fail in the same way as the vehicles already recalled under D126 and H575. The team also found a separate startup software bug with the same 12V charging symptom, though its real-world likelihood wasn't fully confirmed at that point. On September 10, 2026, JLR's Decision Forum reviewed the AI-driven risk data and called for a recall covering the previously recalled markets. JLR has logged 393 claims and field reports in the US between April 2024 and September 2026, with no reported accidents, injuries, or fires.
What sets this campaign apart is the AI-driven scoping. JLR couldn't consistently reproduce the failure in hardware, so the population was set using a predictive model rather than direct failure analysis alone, which is worth knowing because it means the affected population was defined by statistical risk rather than confirmed defect evidence. For dealers, the more immediate issue is that this is the second DCDC-related recall in the same year, spread thin across nine nameplates, several with single- and double-digit vehicle counts, so distinguishing which campaign a given VIN falls under matters as much as reaching the owner at all.
How BizzyCar can help
A population fragmented across nine nameplates, some with only a handful of vehicles apiece, is hard to track from a spreadsheet, and it gets harder when a second, related recall from the same manufacturer is already in the service history for some of these VINs. BizzyCar's Recall Outreach product matches live NHTSA data against a dealer's own customer records for every affected VIN, regardless of model or volume, and reaches owners through two-way SMS with the specific campaign details attached.
With two related DCDC converter recalls now open in the same year, getting each owner matched to the right campaign is as important as reaching them in the first place. For more on how recall volume compares across the industry, see BizzyCar's latest Quarterly Recall Report, or schedule a demo to see how BizzyCar keeps multi-campaign outreach organized.