Engine Heater - Buick 2015 Regal Owner's Manual

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
cabin cooling. 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.
The malfunction indicator lamp
(MIL) is on; this may prevent an
auto stop.
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 vehicle 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 cabin
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 on page 8-1.
The engine is required to run for
either heater or climate control
performance. See Dual
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.
Driving and Operating

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.
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