Black plate (22,1)
Buick LaCrosse Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6043609) - 2014 - 2nd Edition - 10/17/13
9-22
Driving and Operating
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 on page 8-1
. 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
Automatic Climate Control
System on page 8-1
.
The engine is required to run for
either heater or climate control
performance. See
Automatic Climate Control
System on page 8-1
.
The high voltage battery pack
charge is low and requires
recharging.
.
Auto stop time is greater than
two minutes.
.
The hood is opened.
Engine Heater
The engine coolant heater,
if available, can help in cold weather
conditions at or below
−
18°C (0°F)
for easier starting and better fuel
economy during engine warm-up.
Plug in the coolant heater at least
four hours before starting the
vehicle. An internal thermostat in
the plug end of the cord will prevent
engine coolant heater operation at
temperatures above
−
18°C (0°F).
To Use the Engine Coolant
Heater
1. Turn off the engine.
2. Open the hood and unwrap the
electrical cord.