coolant temperature CADILLAC CATERA 2001 1.G Owners Manual

2-24 To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
The electrical cord for the engine coolant heater is in
front of the air cleaner filter and under the headlamp
cover, on the passenger's side of the engine.
3. Plug it into a normal, grounded 110
-volt AC outlet.
CAUTION:
Plugging the cord into an ungrounded outlet
could cause an electrical shock. Also, the wrong
kind of extension cord could overheat and cause
a fire. You could be seriously injured. Plug the
cord into a properly grounded three
-prong
11 0
-volt AC outlet. If the cord won't reach, use a
heavy
-duty three-prong extension cord rated for
at least 15 amps.
4. Before starting the engine, be sure to unplug
and store the cord as it was before to keep it away
from moving engine parts. If you don't, it could
be damaged.
How long should you keep the coolant heater plugged
in? The answer depends on the outside temperature, the
kind of oil you have, and some other things. Instead of
trying to list everything here, we ask that you contact
your dealer in the area where you'll be parking your
vehicle. The dealer can give you the best advice for that
particular area.

2-77 Engine Coolant Temperature
Warning Light
This light tells you that the
engine has overheated.
If this light comes on, you
should stop the vehicle and
turn the engine off as soon
as possible.
A warning chime should also sound if this light
comes on.
As a check, the light should come on for a few seconds
when you start the engine. See ªEngine Overheatingº
in the Index.
Engine Coolant Temperature Gage
This gage shows the engine
coolant temperature. If the
gage pointer moves into
the red area, the engine is
too hot!
This reading means the same thing as the warning
light
-- the engine coolant has overheated. You should
stop the car and turn the engine off as soon as possible.
See ªEngine Overheatingº in the Index.

3-4
In cold weather, when the system senses the need for
heat, airflow will be directed out of the floor outlets. As
the interior temperature approaches a desired setting, the
fan speed will decrease. To maintain interior comfort,
the airflow may move to the instrument panel air outlets
and floor outlets (bi
-level mode). On bright sunny days
in cold weather, the airflow may come out of the air
conditioning outlets (AC mode) to maintain comfort and
prevent stuffiness.
If your vehicle is sitting out on a hot day and you have
the climate control system set for automatic operation,
the air will first flow out of the floor air outlets during
cool down. That is normal. This is to remove hot air
from the air outlets. As the air is cooled, the airflow will
move through the air conditioning outlets.
To avoid blowing cold air in cold weather, the system
will delay turning on the fan until warm air is available.
The length of delay depends on the outside air
temperature, engine coolant temperature or the time
since the engine was last started. As the coolant
warms up, the fan speed will gradually increase and
air will flow from the heater outlets, with some airflow
to the windshield to prevent fogging under most
normal conditions.If you leave your vehicle, the system will remember the
control setting the next time you start your engine,
except for recirculation and rear defrost (heated
backlite). Each ignition cycle cancels recirculation.
Manual Operation
You may manually adjust the air delivery mode or
fan speed.
HEATER/DEFROST: This setting directs air to
the floor outlets and toward the windshield.
AC: This setting directs airflow through the middle
instrument panel outlets.
BI-LEVEL: This setting directs air into your
vehicle in two ways. Cool air is directed to the upper
portion of your body through the middle instrument
panel outlets while warm air is directed to the floor.
HEATER: This setting directs warm air through
the floor outlets. Some warm air is sent to the
windshield to minimize fogging.

3-5
DEFROST: This setting sends most of the airflow
to the windshield with only a small amount to the
floor outlets. Press this button to quickly remove fog or
frost from the windshield (the fan works in high
-speed).
FAN SPEEDS: Press the driver's side
TEMP/AUTO knob to set the fan speed for AUTO.
In this setting, the fan speed is automatically controlled.
If it is cold outside, the fan may not run in the maximum
high fan speed right away. The system checks the
temperature of the engine coolant to assure it is warm
enough to provide heat. When the engine coolant is
warm, the controller allows the fan to gradually increase
to a higher speed. This prevents cold air from blowing
into the passenger compartment. If you want the fan at a
high speed, press the up arrow button until you reach the
highest position of the display. If you want the fan at a
low speed, press the down arrow button until the lowest
position is displayed.
ON/OFF: Press this button to turn the system on or off.
Turning the climate control system on in this way will
recall all previous manually set mode settings. If the system is turned on by pushing the driver's
TEMP/AUTO knob for automatic operation, all of the
previous manually set mode settings will be changed
back to the fully automatic mode.
AC: Press this button to turn the air conditioning on and
off. The system will cool and dehumidify the air inside
the vehicle. In the automatic operation mode, the display
will show AC OFF when the air conditioning has been
turned off.
RECIRCULATION: Press this button to limit
the amount of outside air entering your vehicle.
This is helpful to limit odors entering your vehicle.
In the automatic operation mode, the system will
use recirculation as necessary to cool the air.
Pressing the recirculation button will change the
operation to a manual mode and the air will recirculate
non
-stop. Press this button again to turn off the
recirculation feature.
If you notice the windows fogging, press the
recirculation button to exit the recirculation mode.

6-20 How to Check Lubricant
If the level is below the bottom of the filler plug hole,
you'll need to add some lubricant. Add enough lubricant
to raise the level to the bottom of the filler plug hole.
What to Use
Refer to the Maintenance Schedule to determine what
kind of lubricant to use. See ªRecommended Fluids and
Lubricantsº in the Maintenance Schedule booklet.
Engine Coolant
The cooling system in your vehicle is filled with
DEX
-COOL engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs first, if you add only
DEX
-COOL extended life coolant.
The following explains your cooling system and how
to add coolant when it is low. If you have a problem
with engine overheating, see ªEngine Overheatingº
in the Index.
A 50/50 mixture of clean, drinkable water and
DEX
-COOL coolant will:

Give freezing protection down to
-34F (-37C).

Give boiling protection up to 265F (129C).

Protect against rust and corrosion.

Help keep the proper engine temperature.

Let the warning lights and gages work as
they should.