# Service bulletin TSBENG168R1

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: 10116119
- Published by NHTSA: 2017\-08\-25
- Manufacturer's number: TSBENG168R1
- Manufacturer's date: 2017\-06\-09
- NHTSA component: SERVICE BRAKES, AIR:DISC:PADS; ELECTRONIC STABILITY CONTROL:AUTOMATIC \(ASC\)

## NHTSA's summary

TSB: COMBINATION TSB / SERVICE ACTION: IDLE STABILITY \& SHIFT QUALITY IMPROVEMENT \(SA294A\) \- This bulletin provides the procedure to improve the logic of the Electronic Control Unit \(ECU\) and the Transmission Control Unit \(TCU\) on some 2016MY Optima \(JFa\) vehicles, produced from September 3, 2015 through October 6, 2016, which may experience a vibration and/or hesitation when releasing the brake pedal after coming to stop, and/or a shift quality concern, such as a harsh downshift, upshift, and/or shift delay. To correct this concern, apply the improved logic to the ECU and TCU using KDS download as described in this bulletin.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10116119-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10116119-0001.pdf)

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

## Components

Brakes, Driver assistance, Brake pads

## Vehicles listed

- 2016 KIA OPTIMA

JSON: [/v1/bulletins/10116119](/v1/bulletins/10116119)

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