# Service bulletin D101 \- 21MAY26

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 11033207
- Published by NHTSA: 2026\-06\-03
- Manufacturer's number: D101 \- 21MAY26
- Manufacturer's date: 2026\-05\-22
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Due to inadequate penetration of welding between the cells, the battery’s capacity and therefore the vehicle’s electric range may be depleted below the design intent condition.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11033207-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11033207-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2024 to 2025 LAND ROVER RANGE ROVER PHEV
- 2025 LAND ROVER RANGE ROVER SPORT PHEV

## Recalls for the same vehicles and component

- [26V599000](/recalls/nhtsa/26V599000.md), 2026-09-17: ELECTRICAL SYSTEM:PROPULSION SYSTEM:DC/DC CONVERTER
- [26V248000](/recalls/nhtsa/26V248000.md), 2026-04-17: ELECTRICAL SYSTEM:PROPULSION SYSTEM:DC/DC CONVERTER

## Other bulletins for the same vehicles and component

- [D100 Emission Recall](/bulletins/11038290.md), 2026-10-07, Emissions: ELECTRICAL SYSTEM. D100 Emission Recall Owner Letter
- [D101 Emission Recall](/bulletins/11038289.md), 2026-10-07, Emissions: ELECTRICAL SYSTEM. D101 Emission Recall Owner Letter
- [D103 Emission Recall](/bulletins/11038288.md), 2026-10-07, Emissions: ELECTRICAL SYSTEM. D103 Emission Recall Owner Letter
- [N955 Range Rover 21AUG26](/bulletins/11037148.md), 2026-09-08, Other: ELECTRICAL SYSTEM. A quality concern has been identified where there may be a missing fixing on the Mild Hybrid Electric Vehicle \(MHEV\) battery harness which is away from design specification.
- [SSM76110 \- 21AUG26](/bulletins/11037116.md), 2026-09-08, Other: ELECTRICAL SYSTEM. Vehicles on display e.g. in a showroom whilst being supported by a showroom 12v support unit, these vehicles require an additional fuse to be removed to prevent the MHEV \(48v\) battery draining and causing the cells to drop to a non recoverable level. Failure to follow this process will void the warranty cover on this battery.
- [SSM76110 \- 19AUG26](/bulletins/11037115.md), 2026-09-08, Other: ELECTRICAL SYSTEM. Vehicles on display e.g. in a showroom whilst being supported by a showroom 12v support unit, these vehicles require an additional fuse to be removed to prevent the MHEV \(48v\) battery draining and causing the cells to drop to a non recoverable level. Failure to follow this process will void the warranty cover on this battery.
- [D103 \- 21MAY26](/bulletins/11033209.md), 2026-06-03, Service bulletin: ELECTRICAL SYSTEM. Due to inadequate penetration of welding between the cells, the battery’s capacity and therefore the vehicle’s electric range may be depleted below the design intent condition.
- [SSM76451 \- 23APR26](/bulletins/11032360.md), 2026-05-06, Other: ELECTRICAL SYSTEM. Where vehicles are supported by a 12V Battery Support Unit \(BSU\) and repeatedly interacted with while the engine is not running, the 48V battery may, in the absence of intervention, discharge to a non‑recoverable state.
- [D096 \-28APR26](/bulletins/11032347.md), 2026-05-06, Service bulletin: ELECTRICAL SYSTEM. Inadequate penetration of welding between the cells, the battery’s capacity and therefore the vehicle’s electric range may be depleted below the design intent condition.
- [SSM76411 \- 10MAR26](/bulletins/11030751.md), 2026-04-06, Other: ELECTRICAL SYSTEM. Smart Key Deactivated message on instrument cluster and unable to start their vehicle

JSON: [/v1/bulletins/11033207](/v1/bulletins/11033207)

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