# Service bulletin SSM74156

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: 10152033
- Published by NHTSA: 2018\-12\-17
- Manufacturer's number: SSM74156
- Manufacturer's date: 2018\-11\-27
- NHTSA component: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); ELECTRICAL SYSTEM

## NHTSA's summary

Customers may report the engine management light \(MIL\) is illuminated with the possibility of a ?Traction Reduced \- 2 Wheel Drive Only? warning message displayed within the instrument cluster message centre. DTC?s P1888\-18, P1889\-19, P1889\-1F, P188E\-11, P188E\-12 and P188E\-13 will be stored in the TCCM \(Transfer Case Control Module\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10152033-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10152033-0001.pdf)

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

## Components

Electrical system, Transmission and driveline, Transfer case

## Trouble codes named

P1888, P1889, P188E

## Vehicles listed

- 2018 to 2019 LAND ROVER RANGE ROVER VELAR

## Other bulletins for the same vehicles and component

- [Tech\_RS\_NOV19\_90](/bulletins/10168860.md), 2019-12-06, Service bulletin: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); WHEELS. The wheels are binding when turning the vehicle due to binding of the clutch in the transfer case.

JSON: [/v1/bulletins/10152033](/v1/bulletins/10152033)

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