# Service bulletin SSM75149

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: 10185312
- Published by NHTSA: 2021\-01\-08
- Manufacturer's number: SSM75149
- Manufacturer's date: 2020\-12\-21
- NHTSA component: POWER TRAIN; ENGINE

## NHTSA's summary

DTC Flagged Incorrectly. Stop Start \(non MHEV\) U2300\-51 DTC stored in PCM.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10185312-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10185312-9999.pdf)

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

## Components

Engine, Transmission and driveline

## Trouble codes named

U2300

## Vehicles listed

- 2021 LAND ROVER RANGE ROVER

## Recalls for the same vehicles and component

- [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

## 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.
- [N861 Range Rover 21AUG26](/bulletins/11037143.md), 2026-09-08, Other: ENGINE. Mild Hybrid Electric Vehicle \(MHEV\) Battery Offline
- [Range Rover\_N900 02\-20\-20](/bulletins/11029864.md), 2026-03-06, Other: POWER TRAIN. Loss of power, rattling from underside of the vehicle and the Malfunction Indicator Lamp \(MIL\) illuminated on the instrument cluster.
- [TUCC\_JUL2025\_16](/bulletins/11021642.md), 2025-08-06, Other: ENGINE. The low coolant light may be illuminated/there may be a coolant leak from the engine area.
- [TUCC\_JUN2025\_46](/bulletins/11020209.md), 2025-07-06, Other: POWER TRAIN. MIL on Instrument cluster.
- [TUCC\_JUN2025\_28](/bulletins/11020204.md), 2025-07-06, Other: POWER TRAIN. TURBOCHARGER COOLANT FEED AND RETURN PIPE O\- RING LEAK
- [Range Rover\_N861\_16MAY25](/bulletins/11019267.md), 2025-06-05, Other: POWER TRAIN. 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, loss of start/stop functionality and no communication during diagnostic sessions.
- [TUCC\_MAY2025\_34](/bulletins/11018311.md), 2025-05-14, Other: POWER TRAIN. Vehicle cranks, but does not run when at operating temperature
- [SSM76317ATT \- 28APR25](/bulletins/11017768.md), 2025-05-05, Other: ENGINE. Engine Will Crank, No Start When At Operating Temperature
- [SSM76317 \- 28APR25](/bulletins/11017767.md), 2025-05-05, Other: ENGINE. Engine Will Crank, No Start When At Operating Temperature

JSON: [/v1/bulletins/10185312](/v1/bulletins/10185312)

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