2008 SATURN AURA HYBRID air conditioning

The Engine Will Remain Running When:

The engine, transmission, or hybrid battery is
not warmed up yet.
The outside temperature is less than 5°F (−15°C).
While the A/C is in Normal Mode.
A/C is in Hybrid Mode and the climate control system
is working to cool the vehicle. SeeAutomatic Climate
Control System on page 3-19for more information.
Defrost is selected.
The shift lever is in PARK (P), NEUTRAL (N),
REVERSE (R), INTERMEDIATE (I) or LOW (L).
The hybrid battery pack charge is low.
The 12V vehicle battery charge is low, or loads
are high.
The hood is not fully closed.
The Engine Will Restart When:

The brake pedal is released.
The accelerator pedal is applied.
When shifting out of DRIVE (D) to any other gear.
If the Hybrid A/C button is selected, the duration
of the AUTO STOP will depend on the outside
temperature. This economy mode improves
fuel economy by limiting the effects of the air
conditioning. The warmer it is outside, the shorter
the time before the engine is restarted to provide
cabin cooling.
The climate control system is turned from Off to
Normal A/C or defrost SeeAutomatic Climate
Control System on page 3-19for more information.
The engine is required to run for either heater or
climate control performance. See “Air Conditioning
Engine Start/Stop” underAutomatic Climate Control
System on page 3-19for more information.
The hybrid battery pack charge is low and requires
recharging.
Auto Stop time is greater than two minutes.
2-24

Climate Controls
Automatic Climate Control System
The heating, cooling, and ventilation in your vehicle can
be automatically controlled with this system.
Climate Control Inuence on Hybrid
Operation and Fuel Economy
The climate control system is dependent upon other
vehicle systems for heat and power input. Certain
climate control settings can lead to higher fuel usage
and/or fewer Auto Stops.The following are climate control settings that use
more fuel:
Normal air conditioning mode.
The defrost mode.
Extreme temperature settings, such as
60°F (15°C) / 90F (32°C).
High fan speed settings.
To help reduce fuel usage:
Use the full automatic control as described under
Automatic Operation.
Use hybrid air conditioning, instead of the normal
air conditioning.
Select a temperature setting that is higher in hot
weather and lower in cold weather.
Only use defrost to clear the windows.
3-19

Automatic Operation
AUTO (Automatic):Select AUTO on both the fan
speed knob and the air delivery mode knob to activate
the automatic system. When automatic operation is
active the system controls the inside temperature and
air delivery.
Use the steps below to place the entire system in full
automatic control:
1. Turn the fan knob and the mode knob to the AUTO
position.
The current set temperature displays. When AUTO
is selected, the air conditioning operation and air
inlet is automatically controlled. The air conditioning
compressor runs while the outside temperature is
over about 40°F (4°C). The air inlet is normally
set to outside air. If it is hot outside, the air inlet can
automatically switch to recirculate inside air to
help quickly cool down the vehicle.2. Set the temperature.
An initial setting of 73°F (23°C) is recommended.
Allow about 20 minutes for the system to regulate.
Press the
worxarrow temperature buttons
to adjust the temperature setting as necessary.
If the temperature is set at 60°F (15°C) the system
remains at the maximum cooling setting. If the
temperature is set at 90°F (32°C) the system
remains at the maximum heat setting. Choosing
either maximum setting does not cause the vehicle
to heat or cool any faster.
Be careful not to cover the sensor located on the
top of the instrument panel near the windshield.
This sensor regulates air temperature based on the
intensity of the sun.
Also do not cover the sensor grille on the lower
right side of the climate control faceplate, as
this regulates the inside temperature.
To avoid blowing cold air at engine start-up in cold
weather, the system delays turning on the fan
until warm air is available. The length of delay
depends on the engine coolant temperature. Turning
the fan knob overrides this delay and changes
the fan to the selected speed.
3-20

Manual Operation
The air delivery mode or fan speed, can manually
be adjusted.
Fan Speed Knob
9(Off):Select this position to turn off the fan.
Outside air still enters the vehicle. The direction
can be changed by changing the mode position.
The temperature can also be adjusted using either
the up or down arrow temperature buttons.
9(Fan):Turn the knob with the fan symbol to
manually adjust the fan speed.
wxTemperature Control:Press thewand
xarrows to increase or decrease the temperature
inside the vehicle.
Air Delivery Mode Knob
H(Vent):Use this mode to direct air to the instrument
panel outlets.
)(Bi-Level):Use this mode to direct half of the air
to the instrument panel outlets, and the remaining air to
the oor outlets.
6(Floor):Use this mode to direct most of the air to
the oor outlets with some air directed to the side
window outlets.
The right knob can also be used to select defog or
defrost modes. Information on defogging and defrosting
can be found later in this section.
#(Normal Air Conditioning):Press this button to
turn the air conditioning compressor on and off. A light
above the button comes on while the air conditioning
is on.
When air conditioning is selected or is in AUTO mode,
the system runs the air conditioning automatically to
cool and dehumidify the air entering the vehicle.
While in this mode, the hybrid system does not shut the
engine down at complete stops.
On hot days, open the windows long enough to let hot
inside air escape. This reduces the time it takes for
your vehicle to cool down. Then keep your windows
closed for the air conditioner to work its best.
On cool, but sunny days while using manual operation
of the automatic system, use bi-level to deliver warm
air to the oor and cooler air to the instrument
panel outlets. To warm or cool the air delivered, press
the temperature buttons to the desired setting.
3-21

In AUTO mode the system cools and dehumidies the
air inside the vehicle. Also while in AUTO mode,
the system maximizes its performance by using
recirculation as necessary.
Heating:On cold days when using manual operation of
the automatic system, use oor mode to deliver air to
the oor outlets. To warm or cool the air delivered, push
the temperature buttons to the desired setting.
To use the automatic mode, turn the knob to AUTO and
adjust the temperature by pressing the temperature
buttons.
When the heater is in use, there might be slight noise or
vibration during Auto Stops. This is due to the coolant
circulation pump that continues to circulate heat through
the system during the engine Auto Stop.
The heater works best if the windows are kept closed.
h(Recirculation):Press the button to turn on
the recirculation mode. The air inside the vehicle
recirculates through the climate control system and the
vehicle, not from outside the vehicle. This mode is
helpful when trying to limit odors from entering
the vehicle and for maximum air conditioning
performance in hot weather. When the button ispressed, an indicator light above the button comes on.
The recirculation indicator light blinks three times if
recirculation is used in a mode in which it cannot
function. Only use this mode when it is needed for
comfort, since window fogging rapidly occurs if the air
conditioning compressor is not engaged.
Press this button to cancel the auto recirculation
feature. Each time the vehicle is started, the system
reverts to the auto recirculation function.
If recirculation is selected while in defrost, defog or oor
mode, the light on the button ashes three times and
then goes out to indicate that this is not allowed. This is
to prevent window fogging.
When the weather is cool or damp, operating the
system in recirculation for extended periods of time can
cause fogging of the vehicle’s windows. To clear the
fog, select either defog or defrost. Make sure the
air conditioning is on. Allow the air conditioning to run
automatically to help dehumidify the air.
N(Hybrid Air Conditioning):This setting balances
fuel economy and air conditioning comfort. When
hybrid A/C is used in warm weather, you may notice
more frequent auto stops and the cabin may be warmer
as compared to normal air conditioning.
3-22

Maximum Air Conditioning
On hot days, open the windows to let hot inside air
escape; then close them. This helps to reduce the time
it takes for the vehicle to cool down. It also helps the
system to operate more efficiently.
For quick cool down on hot days, do the following:
1. Select the
Cvent mode.
2. Select the highest fan speed.
3. Select
#air conditioning.
4. Select the
hrecirculation mode.
5. Select the coolest temperature.
Using these settings together for long periods of time
may cause the air inside of the vehicle to become too dry.
To prevent this from happening, after the air in the vehicle
has cooled, turn the recirculation mode off.
Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass.
This can be minimized if the climate control system is
used properly. There are two modes to choose from
to clear fog or frost from the windshield. Use the defog
mode to clear the windows of fog or moisture and
warm the passengers. Use the defrost mode to remove
fog or frost from the windshield more quickly.
-(Defog):Turn the mode knob to this position to
select the defog setting, which delivers air to the oor
and windshield outlets. Use this setting to clear the
windows of fog or moisture.
0(Defrost):Turn the mode knob to this position to
defrost the windshield. The system automatically
controls the fan speed if defrost is selected from the
AUTO mode. If the outside temperature is 40°F (4°C) or
warmer, the air conditioning compressor automatically
runs to help dehumidify the air and dry the windshield.
The air conditioning indicator light blinks three times
if the compressor is turned off while in this mode.
The engine will not perform Auto Stops when the defrost
mode is on.
3-23

(D) Construction Code:A letter code is used
to indicate the type of ply construction in the tire.
The letter R means radial ply construction; the
letter D means diagonal or bias ply construction;
and the letter B means belted-bias ply construction.
(E) Rim Diameter
:Diameter of the wheel in
inches.
(F) Service Description
:The service description
indicates the load range and speed rating of a
tire. The load index can range from 1 to 279.
Speed ratings range from A to Z.
Tire Terminology and Denitions
Air Pressure:The amount of air inside the
tire pressing outward on each square inch of
the tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight
:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission,
power steering, power brakes, power windows,
power seats, and air conditioning.
Aspect Ratio
:The relationship of a tire’s height
to its width.Belt
:A rubber coated layer of cords that is
located between the plies and the tread.
Cords may be made from steel or other
reinforcing materials.
Bead
:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire
:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
Cold Tire Pressure
:The amount of air pressure
in a tire, measured in pounds per square inch
(psi) or kilopascals (kPa) before a tire has built up
heat from driving. SeeInflation - Tire Pressure
on page 5-52.
Curb Weight
:The weight of a motor vehicle
with standard and optional equipment including
the maximum capacity of fuel, oil, and coolant,
but without passengers and cargo.
DOT Markings
:A code molded into the sidewall
of a tire signifying that the tire is in compliance
with the U.S. Department of Transportation (DOT)
motor vehicle safety standards. The DOT code
includes the Tire Identication Number (TIN),
an alphanumeric designator which can also identify
the tire manufacturer, production plant, brand,
and date of production.
5-49

Fuses Usage
POWER
MIRRORSPower Mirrors
NOT
INSTALLEDNot UsedFuses Usage
RUN/CRANKCruise Control Switch, Passenger
Airbag Status Indicator
HVAC
BLOWER HIGHHeating Ventilation Air Conditioning
Blower - High Speed Relay
5-88