# Service bulletin TSB\-ELE131

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: 10109838
- Published by NHTSA: 2017\-08\-02
- Manufacturer's number: TSB\-ELE131
- Manufacturer's date: 2017\-04\-13
- NHTSA component: ELECTRICAL SYSTEM:12V/24V/48V BATTERY

## NHTSA's summary

TSB: SERVICE ACTION: VOLTAGE REGULATOR PERFORMANCE ENHANCEMENT \(SA278\) \- This bulletin provides the procedure to increase the torque on the voltage regulator screws on some 2017MY Sorento \(UMa\), produced from October 3, 2016 to January 24, 2017, and 2017MY Optima \(JFa\) vehicles, produced from October 3, 2016 to January 26, 2017, which may experience low battery voltage or a no\-start condition. Follow the procedure outlined in this bulletin to increase the two \(2\) screws? torque on the voltage regulator. Before conducting the procedure, verify that the vehicle is included in the list of affected VINs.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10109838-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10109838-0001.pdf)

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

## Components

Electrical system, 12\-volt battery

## Vehicles listed

- 2017 KIA OPTIMA
- 2017 KIA SORENTO

## Other bulletins for the same vehicles and component

- [PS494\_R1](/bulletins/10154659.md), 2019-03-18, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. PITSTOP: HIGH VOLTAGE \(HV\) BATTERY AND BATTERY MANAGEMENT SYSTEM \(BMS\) PART NUMBER CHANGE \- This bulletin has been revised to include additional information.This Pitstop provides information regarding a running change to the High Voltage \(HV\) Battery and Battery Management System \(BMS\) control unit assemblies on 2017MY Optima Hybrid \(JF HEV only, does not apply to Optima Plug\-in Hybrid vehicles \(VINs starting with KNAG\*4LD\). See below for details regarding the correct part numbers.
- [PS494](/bulletins/10109856.md), 2017-08-02, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TSB: HIGH VOLTAGE \(HV\) BATTERY AND BATTERY MANAGEMENT SYSTEM \(Bms\) PART NUMBER CHANGE \- This Pitstop provides information regarding a running change to the High Voltage \(HV\) Battery and Battery Management System \(BMS\) control unit assemblies on 2017MY Optima Hybrid \(JF HEV only, does not apply to PHEV\) vehicles.
- [TSB\-ELE044R1](/bulletins/10109676.md), 2017-08-02, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TSB: HIGH\-VOLTAGE BATTERY ORDERING AND RETURN PROCEDURE \- This bulletin outlines the ordering and return procedure for high\-voltage Lithium\-ion batteries equipped on EV/hybrid vehicles \(hereafter referred to as "high\-voltage batteries" or HVBs\). Every Kia\-approved EV/hybrid dealership?s parts and service departments should follow these procedures to ensure the fastest handling time and to minimize the possibility of charge\-backs.

JSON: [/v1/bulletins/10109838](/v1/bulletins/10109838)

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