# Service bulletin SSM75663ATT

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: 10207640
- Published by NHTSA: 2022\-02\-04
- Manufacturer's number: SSM75663ATT
- Manufacturer's date: 2022\-01\-26
- NHTSA component: ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM

## NHTSA's summary

Coolant Level Low message displayed on the instrument panel cluster.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10207640-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10207640-9999.pdf)

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

## Components

Electrical system, Engine

## Vehicles listed

- 2020 to 2022 LAND ROVER RANGE ROVER
- 2020 to 2022 LAND ROVER RANGE ROVER SPORT

## 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
- [2024599](/recalls/tc/2024599.md), 2024-10-10: Engine
- [2023189](/recalls/tc/2023189.md), 2023-03-30: Engine
- [23V221000](/recalls/nhtsa/23V221000.md), 2023-03-30: ENGINE AND ENGINE COOLING:COOLING SYSTEM
- [23V044000](/recalls/nhtsa/23V044000.md), 2023-02-02: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION
- [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 21AUG26](/bulletins/11037143.md), 2026-09-08, Other: ENGINE. Mild Hybrid Electric Vehicle \(MHEV\) Battery Offline
- [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.
- [SSM76460 \- 01JUN26](/bulletins/11034858.md), 2026-07-08, Other: POWER TRAIN; ENGINE. Malfunction Indicator Lamp \(MIL\) is illuminated on the instrument panel.
- [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.
- [JLRTB02127NAS7 \- 13MAY26](/bulletins/11033246.md), 2026-06-03, Service bulletin: ENGINE. Engine coolant level low with no visible loss of coolant\- RESCINDED.
- [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,
- [N928 Range Rover 20MAR26](/bulletins/11031119.md), 2026-04-07, Other: ELECTRICAL SYSTEM. Software Over The Air \(SOTA\) updates are failing to complete.
- [N869 Range Rover 20MAR26](/bulletins/11031114.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

JSON: [/v1/bulletins/10207640](/v1/bulletins/10207640)

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