# Service bulletin S\-SB\-0021\-15

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: 10111447
- Published by NHTSA: 2017\-08\-14
- Manufacturer's number: S\-SB\-0021\-15
- Manufacturer's date: 2015\-09\-17
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ELECTRICAL SYSTEM

## NHTSA's summary

SSB: Some 2015 \- 2016 model year FR\-S vehicles may exhibit a condition where the engine idle speed fluctuates \(typically 500 \- 1000 RPM\) only when the transmission is in the Park or Neutral shift position. This condition occurs after the vehicle has been driven about 25 miles or more at highway speeds. The Transmission Control Module \(TCM\) logic has been revised to address this condition. Use the following procedure for reprogramming the TCM.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10111447-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10111447-0001.pdf)

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

## Components

Electrical system, Transmission and driveline, Automatic transmission, Software, Transmission control module

## Vehicles listed

- 2015 to 2016 SCION FR\-S

JSON: [/v1/bulletins/10111447](/v1/bulletins/10111447)

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