# Service bulletin SSM75186

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: 10185391
- Published by NHTSA: 2021\-01\-08
- Manufacturer's number: SSM75186
- Manufacturer's date: 2020\-12\-15
- NHTSA component: ELECTRICAL SYSTEM; EQUIPMENT

## NHTSA's summary

No cabin heating while running in vehicle in EV mode.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10185391-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10185391-9999.pdf)

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

## Components

Electrical system, Equipment and accessories

## Vehicles listed

- 2020 to 2021 LAND ROVER DISCOVERY SPORT
- 2020 to 2021 LAND ROVER RANGE ROVER EVOQUE
- 2020 to 2021 LAND ROVER RANGE ROVER PHEV
- 2020 to 2021 LAND ROVER RANGE ROVER SPORT
- 2020 to 2021 LAND ROVER RANGE ROVER SPORT PHEV
- 2020 to 2021 LAND ROVER RANGE ROVER VELAR
- 2021 LAND ROVER RANGE ROVER VELAR 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
- [23V031000](/recalls/nhtsa/23V031000.md), 2023-01-26: BACK OVER PREVENTION:WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:SOFTWARE
- [20V751000](/recalls/nhtsa/20V751000.md), 2020-12-03: ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER; ELECTRICAL SYSTEM:SOFTWARE
- [2020529](/recalls/tc/2020529.md), 2020-11-05: Electrical
- [20V683000](/recalls/nhtsa/20V683000.md), 2020-11-05: ELECTRICAL SYSTEM:SOFTWARE
- [20V586000](/recalls/nhtsa/20V586000.md), 2020-09-24: EQUIPMENT:OTHER:LABELS; TIRES
- [20V585000](/recalls/nhtsa/20V585000.md), 2020-09-24: ELECTRICAL SYSTEM:SOFTWARE; TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS
- [20V517000](/recalls/nhtsa/20V517000.md), 2020-08-27: ELECTRICAL SYSTEM:SOFTWARE; TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS

## Other bulletins for the same vehicles and component

- [N861 Range Rover 17JUL26](/bulletins/11035875.md), 2026-08-05, Other: ELECTRICAL SYSTEM. Mild Hybrid Electric Vehicle \(MHEV\) Battery Offline
- [N861 Range Rover 16JUN26](/bulletins/11034884.md), 2026-07-08, Other: ELECTRICAL SYSTEM. 48V Mild Hybrid Electric Vehicle \(MHEV\) battery enters an offline state and no longer communicates or functions as intended. This can result in illumination of the Malfunction Indicator Lamp \(MIL\) ,loss of start/stop functionality and no communication during diagnostic sessions.
- [N861 Range Rover 15MAY26](/bulletins/11033423.md), 2026-06-04, Other: ELECTRICAL SYSTEM. 48V Mild Hybrid Electric Vehicle \(MHEV\) battery enters an offline state and no longer communicates or functions as intended.
- [N861 Range Rover 17APR26](/bulletins/11032423.md), 2026-05-07, Other: ELECTRICAL SYSTEM. On certain 48V Mild Hybrid Electric Vehicle \(MHEV\) battery enters an offline state and no longer communicates or functions as intended. Malfunction Indicator Lamp \(MIL\) might be illuminated,
- [N869 Range Rover 20MAR26](/bulletins/11031114.md), 2026-04-07, Other: ELECTRICAL SYSTEM. Software Over The Air \(SOTA\) updates are failing to complete.
- [N869 DISCOVERY 20MAR26](/bulletins/11031113.md), 2026-04-07, Other: ELECTRICAL SYSTEM. Software Over The Air \(SOTA\) updates are failing to complete.
- [SSM76411 \- 10MAR26](/bulletins/11030751.md), 2026-04-06, Other: ELECTRICAL SYSTEM. Smart Key Deactivated message on instrument cluster and unable to start their vehicle
- [Range Rover\_N861 02\-20\-20](/bulletins/11029857.md), 2026-03-06, Other: ELECTRICAL SYSTEM. The 48V Mild Hybrid Electric Vehicle \(MHEV\) battery enters an offline state and no longer communicates or functions as intended. This can result in illumination of the Malfunction Indicator Lamp \(MIL\), loss of start/stop functionality and no communication during diagnostic sessions.
- [Discovery\_N861 02\-20\-2026](/bulletins/11029856.md), 2026-03-06, Other: ELECTRICAL SYSTEM. The 48V Mild Hybrid Electric Vehicle \(MHEV\) battery enters an offline state and no longer communicates or functions as intended. This can result in illumination of the Malfunction Indicator Lamp \(MIL\), loss of start/stop functionality and no communication during diagnostic sessions.
- [TUCC\_FEB2026\_35](/bulletins/11029600.md), 2026-03-04, Other: ELECTRICAL SYSTEM. There is a concern with the 48Volt charging system\(DC/DC\) with the vehicle.

JSON: [/v1/bulletins/10185391](/v1/bulletins/10185391)

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