Eassist Overview; Eassist Features - Buick LaCrosse Getting To Know Manual

eAssist Overview

A compact electric assist system called eAssist has been integrated with the highly
efficient 2.4-liter four-cylinder engine and six-speed automatic transmission to provide an
electric "boost" to help conserve fuel. eAssist includes a small, but powerful, electric motor
rated at 15 kilowatts. It replaces the typical alternator found on most engines. eAssist also
uses a small, advanced 115-volt lithium-ion battery located in the trunk.

eAssist Features

Auto Start/Stop
While driving, when the brake is applied and the vehicle comes to a complete stop, the
automatic engine start/stop system may turn off the engine, referred to as an Auto Stop.
In Auto Stop mode, the tachometer gauge (A) will read AUTO STOP. The audio system,
climate controls and other accessories will be powered by the high-voltage battery. The
engine will restart immediately when the brake pedal is released or the accelerator pedal is
applied.
After parking the vehicle and turning off the engine, the tachometer gauge will read OFF.
There are several conditions that may cause the engine to remain running or restart when
the vehicle is stopped.
• The engine, transmission or high-voltage battery is not at the required operating
temperature.
• The outside temperature is less than –4º F (–20º C).
• The shift lever is in any gear other than Drive (D).
• The high-voltage battery state of charge is low. It will automatically recharge as the
vehicle is driven.
• The climate control system requires the engine to run based on the climate control or
defog setting. Using the
and longer Auto Stops than the
• The Auto Stop time is greater than two minutes.
18
(if equipped)
eco Air Conditioning mode will result in more frequent
Comfort Air Conditioning mode.
C
See Driving and Operating in your Owner Manual.
A
B