# Service bulletin SSM74964

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: 10178133
- Published by NHTSA: 2020\-08\-07
- Manufacturer's number: SSM74964
- Manufacturer's date: 2020\-07\-31
- NHTSA component: POWER TRAIN; ELECTRICAL SYSTEM

## NHTSA's summary

Customer reports a MIL/check engine light occurring on their PHEV vehicle.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10178133-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10178133-9999.pdf)

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

## Components

Electrical system, Transmission and driveline

## Vehicles listed

- 2020 LAND ROVER RANGE ROVER PHEV
- 2020 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
- [23V031000](/recalls/nhtsa/23V031000.md), 2023-01-26: BACK OVER PREVENTION:WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:SOFTWARE
- [20V585000](/recalls/nhtsa/20V585000.md), 2020-09-24: ELECTRICAL SYSTEM:SOFTWARE; TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS

## Other bulletins for the same vehicles and component

- [N861 Range Rover 18SEP26](/bulletins/11038355.md), 2026-10-07, Other: POWER TRAIN. Malfunction Indicator Lamp \(MIL\), loss of start/stop functionality and no communication during diagnostic sessions.
- [N881 Range Rover 18SEP26](/bulletins/11038353.md), 2026-10-07, Other: POWER TRAIN. Malfunction Indicator Lamp \(MIL\) may illuminate if the vehicle is refueled within 15 seconds of turning the engine off.
- [N900 Range Rover 21AUG26](/bulletins/11037146.md), 2026-09-08, Other: POWER TRAIN. Malfunction Indicator Lamp \(MIL\) illuminated on the instrument cluster. The root cause of the symptoms is the catalytic converter over temperature.
- [N881 Range Rover 21AUG26](/bulletins/11037145.md), 2026-09-08, Other: POWER TRAIN. Malfunction Indicator Lamp \(MIL\) may illuminate if the vehicle is refueled within 15 seconds of turning the engine off.
- [N881 Range Rover 17JUL26](/bulletins/11035877.md), 2026-08-05, Other: POWER TRAIN. Powertrain Control Module \(PCM\) Software Update
- [N861 Range Rover 17JUL26](/bulletins/11035875.md), 2026-08-05, Other: ELECTRICAL SYSTEM. Mild Hybrid Electric Vehicle \(MHEV\) Battery Offline
- [N900 Range Rover 16JUN26](/bulletins/11034940.md), 2026-07-08, Other: POWER TRAIN. Customers may experience loss of power, rattling from underside of the vehicle and the Malfunction Indicator Lamp \(MIL\) illuminated on the instrument cluster.
- [N881 Range Rover 16JUN26](/bulletins/11034938.md), 2026-07-08, Other: POWER TRAIN. Malfunction Indicator Lamp \(MIL\) may illuminate if the vehicle is refueled within 15 seconds of turning the engine off
- [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.
- [N881 Range Rover 15MAY26](/bulletins/11033430.md), 2026-06-04, Other: POWER TRAIN. Malfunction Indicator Lamp \(MIL\) may illuminate if the vehicle is refueled within 15 seconds of turning the engine off.

JSON: [/v1/bulletins/10178133](/v1/bulletins/10178133)

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