# Service bulletin 403100556

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: 10121632
- Published by NHTSA: 2017\-10\-31
- Manufacturer's number: 403100556
- Manufacturer's date: 2017\-10\-20
- NHTSA component: POWER TRAIN; ELECTRICAL SYSTEM

## NHTSA's summary

According to the notification received by Daimler Trucks; certain vehicles may not have the correct programming in the transmission control module \(TCM\) to downshift to second gear during an engine brake event. This may result in reduced engine braking effectiveness. The TCM will be inspected and if necessary reprogrammed to enable the downshifting feature. The affected models are specific Freightliner Custom Chassis XCM, XCR, and XCS chassis manufactured March 21, 2016, through July 1, 2016.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10121632-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10121632-0001.pdf)

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

## Components

Electrical system, Transmission and driveline

## Vehicles listed

- 2017 BERKSHIRE BE38A\-340
- 2017 CROSS COUNTRY CROSS COUNTRY
- 2017 LEGACY SR LSA340BH\-340
- 2017 LEGACY SR LSA38C\-340

## Other bulletins for the same vehicles and component

- [511452](/bulletins/10206853.md), 2022-02-04, Service bulletin: ELECTRICAL SYSTEM. Notice of Submission of Defect Information Report/Defect Information Notice. Subject: FCCC Rear PDM. 21V00H.

JSON: [/v1/bulletins/10121632](/v1/bulletins/10121632)

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