# Service bulletin LTB01109NAS1

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: 10127509
- Published by NHTSA: 2018\-01\-29
- Manufacturer's number: LTB01109NAS1
- Manufacturer's date: 2017\-12\-12
- NHTSA component: POWER TRAIN

## NHTSA's summary

The Terrain Response® system may not operate as expected when in 'Auto' mode by not automatically selecting the correct driving mode. As the driving mode changes, the transmission may downshift, the engine Revolutions Per Minute \(RPM\) may also increase, and/or the 'Auto Stop/Start OFF' warning indicator may illuminate on the Instrument Cluster \(IC\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10127509-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10127509-0001.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2017 LAND ROVER DISCOVERY
- 2014 to 2016 LAND ROVER RANGE ROVER
- 2014 to 2017 LAND ROVER RANGE ROVER SPORT

## Other bulletins for the same vehicles and component

- [N881 Discovery 18SEP26](/bulletins/11038354.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.
- [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.
- [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 Discovery 21AUG26](/bulletins/11037144.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
- [N881 Discovery 17JUL26](/bulletins/11035876.md), 2026-08-05, Other: POWER TRAIN. Powertrain Control Module \(PCM\) Software Update
- [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
- [N881 Discovery 16JUN26](/bulletins/11034937.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.
- [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.
- [N881 Discovery 15MAY26](/bulletins/11033429.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/10127509](/v1/bulletins/10127509)

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