# Service bulletin 19\-HC\-002H

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: 10165453
- Published by NHTSA: 2019\-09\-30
- Manufacturer's number: 19\-HC\-002H
- Manufacturer's date: 2019\-08\-09
- NHTSA component: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:12V/24V/48V BATTERY

## NHTSA's summary

This bulletin provides instructions for a Battery Management System \(BMS\) software update to optimize DTC P1B70 \- HEV Battery Voltage Too Low diagnostic control logic.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10165453-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10165453-9999.pdf)

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

## Components

Electrical system, Equipment and accessories, Labels and manuals, 12\-volt battery

## Trouble codes named

P1B70

## Vehicles listed

- 2011 to 2015 HYUNDAI SONATA HYBRID

## Other bulletins for the same vehicles and component

- [19\-EE\-003H](/bulletins/10160148.md), 2019-05-20, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. The following summarizes the service procedures for Lithium Battery replacement:
- [5NP\-E2C3Q\-09](/bulletins/10117374.md), 2017-09-14, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This bulletin provides information on how to return a Hyundai HEV/PHEV/EV/Fuel Cell Lithium Battery for proper disposal and safe environmental recycling using Hyundai?s authorized vendor Kinsbursky Brothers Inc. \(KBI\).
- [TSB\-14\-HC\-002](/bulletins/10056327.md), 2014-10-30, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. HYUNDAI: SOME VEHICLES EXPERIENCE NOT MOVING FROM STOP OR GASOLINE ENGINE NOT TURN ON, CHARGING WARNING LIGHT ON, INSTRUMENT CLUSTER DISPLAY WARNING SAFELY STOP AND DO NOT DRIVE, NO EV READY MODE OR READY LIGHT BLINKS ON/OFF. MODEL 2011\-2014 SONATA \(YF HEV\). \*PE UPDATED 3/31/15. \*PE
- [TSB\-11\-01\-033](/bulletins/10041945.md), 2011-11-19, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES. HYUNDAI: BULLETIN PROVIDING INFORMATION ON REPLACING THE BATTERY CABLE TERMINAL. \*PE
- [11\-GI\-004](/bulletins/10037911.md), 2011-06-07, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY. HYUNDAI: PROCEDURE IF A VOLTAGE BATTERY IS DISCHARGED AT A FAST RATE DUE TO AN ABNORMALLY HIGH RATE FROM AN EMPTY FUEL TANK OR MALFUNCTION OF THE SYSTEM. 2011 SONATA. \*RM

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