Buick 2012 LaCrosse Manual de usuario

2012 - 2016 Buick LaCrosse eAssist

2012 - 2016 Buick Regal eAssist

GM Service Technical College provides First Responder Guides (FRG) and Quick Reference (QR) Sheets free of charge to First Responders.

FRGs and QRs can be displayed in a classroom as long as they are represented as GM information and are not modified in any way.

GM’s First Responder Guides are available at www.gmstc.com

The intent of this guide is to provide information to help you respond to emergency situations involving the Buick

LaCrosse and Regal eAssist vehicles in the safest manner possible. This guide contains a general description of

how the Buick LaCrosse and Regal eAssist vehicle systems operate and includes illustrations of the unique

components. The guide also describes methods of disabling the high voltage system and identifies cut zone

information.

Vehicle Specifications

The Buick LaCrosse and Regal

eAssist vehicles are front-wheel

drive, five passenger hybrid electric

vehicles. The eAssist system utilizes

a high voltage battery, located in the

trunk, as a supplemental power

source. The system assists the

engine utilizing a high torque belt

driven starter / generator.

Vehicle Identification

The Buick LaCrosse and Regal eAssist do NOT use

exterior badging to identify them as eAssist vehicles.

To differentiate between standard and eAssist Buick

LaCrosse and Regal vehicles, look in the following

places to determine if high voltage exists:

Under the hood features:

•Large orange cable connected to generator

•Yellow First Responder Cut Tape Label

Instrument panel cluster features:

•Economy gauge

•Auto stop position on tachometer

Trunk features:

•Battery label

Economy

Gauge

Auto Stop

Tachometer

Low Voltage System

High Voltage

3-Phase Cables

High Voltage

Battery

There are two separate electrical

systems within the eAssist vehicles:

low voltage (12V) and high voltage

(130V). The low voltage system is

similar to a conventional vehicle.

The low voltage system provides the

energy needed to enable the high

voltage system, therefore, when

approaching an emergency

situation, the low voltage system

must be disabled.

The Buick LaCrosse and Regal eAssist system is

composed of the following components:

•High voltage starter / generator

•3-phase electric power cables

•High voltage lithium-ion battery

System Components

High Voltage

Lithium-Ion Battery

3–Phase Electric Power

Cables

High Voltage

Starter / Generator

High Voltage Lithium-Ion Battery

The Buick LaCrosse and Regal eAssist system features a 130 volt lithium-ion battery, which provides electrical

energy to the starter / generator. The high voltage battery assembly is located in the trunk behind the rear

passenger seats. The assembly includes several internal components that operate together to provide and control

the high voltage for the eAssist system.

3-Phase Electric Power Cables

3-Phase Electric Power

Cables

The 3-phase electric power cables connect the high voltage battery assembly to the starter /

generator. These cables are housed in a labeled protective metal tubing under the vehicle.

High Voltage Starter Generator

High Voltage

Starter / Generator

The eAssist system is designed to restart the engine after an auto stop and supplement engine torque on

various powertrain configurations which improves fuel economy.

System Operation

The eAssist system is designed to shut the engine off or auto stop when the vehicle is NOT in motion, restart the

engine after an auto stop, and supplement engine torque.

The eAssist system provides an electric boost to the powertrain system during heavy acceleration and grade

driving. This boost enables the transmission to operate more efficiently. The added functionality of the electric

boost, engine auto stop, and early deceleration fuel shut-off results in fuel savings.

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