Buick 2016 LaCrosse Owner's Manual page 181

180 Driving and Operating
Vehicles with eAssist have an
automatic engine start/stop feature.
After the engine is started and has
reached operating temperature, the
auto stop feature may cause the
engine to turn off when the brakes
are applied and the vehicle comes
to a complete stop. The vehicle may
remain in auto stop for up to
two minutes. When the brake is
released or the accelerator pedal
applied, the engine will start. The
engine will continue to run until the
next auto stop.
AUTO STOP on the tachometer
signifies that the engine is in auto
stop mode. See Tachometer 0 109.
When the vehicle is turned off, the
tachometer will move to OFF. If the
driver door is opened while in auto
stop mode, a chime will sound.
To restart the engine during auto
stop, release the brake pedal or
press the accelerator pedal. The
engine starts immediately. The
vehicle continues to run until the
next stop.
There are several conditions that
may prevent an auto stop or cause
an auto start.
The Engine Will Remain
Running When:
The engine, transmission,
or high voltage battery is not
warmed up yet.
The outside temperature is less
than 20 °C ( 4 °F).
The air conditioning or defrost
system need the compressor to
maintain interior comfort. See
Dual Automatic Climate Control
System 0 157 When it is very
warm or humid, the system may
not be able to shut the engine off
while maintaining interior
comfort. To maximize fuel
economy, use the eco air
conditioning mode.
The shift lever is in P (Park),
N (Neutral), R (Reverse),
or M (Manual Mode).
The high voltage battery pack
charge is low.
The hood is not fully closed.
Brake pedal pressure is low.
If the malfunction indicator lamp
is on, auto stop may be
prevented.
High humidity is detected.
The Engine Will Restart When:
The brake pedal is released.
The accelerator pedal is applied.
Shifting out of D (Drive) to any
other gear.
The air conditioning or defrost
system need the compressor to
maintain interior comfort. See
Dual Automatic Climate Control
System 0 157. The warmer it is
outside, the shorter the time
before the engine is restarted to
provide interior cooling. To
maximize fuel economy, use the
eco air conditioning mode.
The climate control system is
turned from off to normal air
conditioning or defrost. See Dual
Automatic Climate Control
System 0 157.