2000 CADILLAC CATERA sensor

2-46
If you turn the control dial all the way up, the lamps will
remain on for about three minutes after the ignition has
been turned to OFF or LOCK. If you turn the control
dial all the way down, the lamps will go off quickly.
You can adjust the delay time from a few seconds
up to three minutes.
To turn the Twilight Sentinel off, press the OFF button
again. The indicator light in the button will be on. This
lets the driver know that the system has been turned off.
The Twilight Sentinel also turns off if the ignition is
turned to OFF or to LOCK.
This light in the instrument
panel cluster will come on
if the ignition is on and:

the headlamps have not been manually turned on,

the Twilight Sentinel senses it is dark enough outside,

the Twilight Sentinel is OFF and

the transmission is not in PARK (P).Light Sensor
The light sensor for the
Twilight Sentinel is located
in the center of the front
defogger grille.
If you cover the sensor, it will read ªdarkº and the
parking lamps and low
-beam headlamps will come on.

2-67 Air Bag Readiness Light
There is an air bag readiness light on the instrument
panel, which shows the air bag symbol. The system
checks the air bag's electrical system for malfunctions.
The light tells you if there is an electrical problem. The
system check includes the air bag sensors, the air bag
modules, the wiring and the diagnostic module. For
more information on the air bag system, see ªAir Bagº
in the Index.
This light will come on
when you start your vehicle,
and it will flash for a few
seconds. Then the light
should go out. This means
the system is ready.
If the air bag readiness light stays on after you start the
vehicle or comes on when you are driving, your air bag
system may not work properly. Have your vehicle
serviced right away.
CAUTION:
If the air bag readiness light stays on after you
start your vehicle, it means the air bag system
may not be working properly. The air bags in
your vehicle may not inflate in a crash, or they
could even inflate without a crash. To help avoid
injury to yourself or others, have your vehicle
serviced right away if the air bag readiness light
stays on after you start your vehicle.
The air bag readiness light should flash for a few
seconds when you turn the ignition key to ON. If the
light doesn't come on then, have it fixed so it will be
ready to warn you if there is a problem.

2-71 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.
Low Coolant Warning Light
This warning light should
come on for a few seconds
while you are starting the
engine. If the light doesn't
come on, have it repaired.
Your vehicle is equipped with a low coolant level sensor
(switch and float) that is designed to detect when your
vehicle's coolant level drops below the set limit. If the
low coolant level sensor (under the coolant surge tank)
detects that the level drops while the engine is running,
the low coolant indicator will light and remain lit until
the ignition switch is turned off. Check the coolant level
and add coolant as needed. The light should turn off as
soon as the coolant level is at its proper operating range.

3-3
Outside Temperature Display
The outside temperature is always displayed when
your vehicle's ignition is on. If the outside temperature
display begins to flash, this means that icy road
conditions are possible. Adjust your driving if needed.
The display will flash for about 30 seconds and then
remain on steady.
Mode Button
Press this button to deliver air through the floor, middle
or windshield outlets. The climate control system will
stay in the selected ECC mode until the MODE button is
pressed again or until the TEMP/AUTO knob is pressed.
Press the up or down arrow to see the available modes.
English/Metric Display
You can change the temperature display from English
(degrees Fahrenheit) to metric (degrees Celsius) by
pressing and holding the driver's side TEMP/AUTO
knob for approximately five seconds. Repeat the
process to change back to English from metric.Automatic Operation
Pressing the driver's side TEMP/AUTO knob sets the
system for automatic operation. Once the system is set,
sensors will control the air delivery mode. Air will come
from the floor, middle, side or windshield outlets. The
fan speed will vary as the system maintains the selected
temperature setting. (All previous manually set mode
settings will change back to a fully automatic mode
when the climate control system is turned on this way.)
Be careful not to put anything over the solar sensor
located in the middle of the instrument panel near the
windshield. This sensor is used by the automatic system
to regulate temperature.
To find your comfort zone, start with the 75
F (24
C)
setting and allow about 20 minutes for the system to
regulate air temperature. Adjust the temperature if
necessary. If you choose 60
F (16
C), the system
will remain at that maximum cooling setting and will
not regulate fan speed. If you choose the temperature of
90
F (32
C), the system will remain at that maximum
heating setting and will not regulate fan speed. Choosing
either maximum setting will not cause the system to heat
or cool any faster.

6-28
NOTICE:

Using the wrong fluid can badly damage
brake system parts. For example, just a few
drops of mineral
-based oil, such as engine
oil, in your brake system can damage brake
system parts so badly that they'll have to
be replaced. Don't let someone put in the
wrong kind of fluid.

If you spill brake fluid on your vehicle's
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake
fluid on your vehicle. If you do, wash it off
immediately. See ªAppearance Careº in
the Index.
Brake Wear
Your vehicle has four-wheel disc brakes.
Your vehicle has electronic wear sensors that let you
know when the front brake pads are significantly worn
and new pads are needed. The brake pad wear indicator
light will come on and stay on when the brake pads are
worn and need to be replaced. (See ªBrake Pad Wear
Indicator Lightº in the Index.)
CAUTION:
The brake pad wear indicator light means that
soon your brakes won't work well. That could
lead to an accident. When the brake pad wear
indicator light comes on and stays on, have your
vehicle serviced.

6-59
Fuse Usage
4 RH and LH Rear Seat Cushion Heater
Relay, Rear Sunshade Motor, Accessory
Power Outlet
5 Transmission Control Module
6 Radio Speaker Amplifier
7 RH and LH Rear Side Door Window
Regulator Motor
8 Headlamp Switch, Turn Signal
Switch, Horn Relay, CD Changer,
Multifunction Relay
9 Windshield Wiper Motor and Relay,
Windshield Wiper and Windshield
Washer Switch
10 Body Control Module (BCM), Heater
Water Auxiliary Pump, Fan Control
Relays, Auxiliary Water Pump Relay
11 Heater and A/C Control, RH and LH
Outside Rearview Mirrors
12 Hazard Warning Switch, Instrument
Cluster, Data Link Connector (DLC),
Stoplamp Switch, Gage Cluster, Heater
and A/C Control.Fuse Usage
13 Remote Control Outside Rearview Mirror
Switch, A/C Compressor Relay, Coolant
Fan Test Connector, A/C Load Switch
14 Cellular Telephone, RH and
LH Windshield Washer Nozzles,
Driver and Passenger Heated Seat Switch,
Heater and A/C Control, Heated Outside
Rearview Mirror and Rear Window
Defogger Relay
15 Rear Suspension Leveling Air Compressor
Relay, Instrument Cluster, Gage Cluster,
Cruise Control Switch, Headlamp Switch,
Multifunction Relay, Passenger and
Driver Heated Seat Relay, BCM, Sunroof
Actuator, Automatic Level Control Sensor,
RH and LH Heated Rear Seat Switch, RH
and LH Heated Rear Seat Cushion Relay,
Driver Seat Adjuster Memory Module,
LH Front Side Door Window Switch,
Inside Rearview Mirror
16 Cigarette Lighter (Front and Console)
17 Horn #1 and #2
18 Fuel Pump

6-60
Fuse Usage
19 Electronic Brake/Traction Control Module
20 Passenger and Driver Heated Seat Relay
21 Daytime Running Lamp (DRL) Relay,
LH High
-Beam Headlamp Relay
22 Headlamp Switch, LH
Low
-Beam Headlamp
23 LH Parking Lamp and Turn Signal
Lamps, LH Rear Sidemarker Lamp,
Multifunction Relay, LH Stoplamp
and Taillamp
24 Lifting Magnet, BCM, Gage Cluster
25 Sunroof Actuator
26 Headlamp Switch, RH and LH Front
Sidemarker Lamp, Middle Taillamp,
RH and LH Rear License Plate Lamp,
Radio, Automatic Transmission Control
Indicator, Heater and A/C ControlFuse Usage
27 Automatic Level Control Sensor, Rear
Suspension Leveling Air Compressor
and Relay
28 Door Lock Relay
29 Multifunction Relay, OnStar

System
30 RH Parking Lamp and Turn Signal Lamp,
RH Rear Sidemarker Lamp, RH
Stoplamp and Taillamp
31 RH Low
-Beam Headlamp Turn
Signal Switch
32 RH High
-Beam Headlamp Relay
33 Blower Controller, A/C Compressor Relay
34 Heated Rear Window Defogger Relay
35 Passenger Seat Adjuster Switch,
Driver Seat Adjuster Memory Module