2004 CADILLAC DEVILLE instrument cluster

When the Twilight Sentinel®lever is on and it is dark
enough outside, the high-beam headlamps at reduced
intensity will turn off and normal low-beam headlamp
operation will occur.
When the Twilight Sentinel
®lever is on and it is bright
enough outside, the regular lamps will go off, and
the high-beam headlamps at reduced brightness will
take over. If you start your vehicle in a dark garage, the
automatic headlamp system will come on immediately.
Once you leave the garage, it will take approximately
one minute for the automatic headlamp system to
change to DRL if it is light outside. During that delay,
your instrument panel cluster may not be as bright
as usual. Make sure your instrument panel brightness
knob is in the full bright position. See “Instrument Panel
Brightness” underInterior Lamps on page 3-22.
If it is dark enough outside and the Twilight
Sentinel
®lever is off, a HEADLAMPS SUGGESTED
message will display on the Driver’s Information Center
(DIC). This message informs the driver that turning
on the exterior lamps is recommended even though the
DRL are still illuminated.Turning on the Twilight Sentinel
®or the headlamps will
deactivate the DRL and remove the HEADLAMPS
SUGGESTED message. If the parking lamps or the fog
lamps were turned on instead, the DRL will still
deactivate and the HEADLAMPS SUGGESTED
message will continue to be displayed.
To idle your vehicle with the DRL off at night, turn off the
Twilight Sentinel
®and shift the transaxle into PARK (P).
Placing your vehicle in PARK (P) disables the DRL. The
DRL will stay off until you shift out of PARK (P).
To drive your vehicle with the DRL off, turn off the
Twilight Sentinel
®and manually turn on the parking
lamps or fog lamps (if equipped).
As with any vehicle, you should turn on the regular
headlamp system when you need it.
3-19

Fog Lamps
If your vehicle has fog lamps, use them for better vision
in foggy or misty conditions.
The fog lamp button is
located to the left of the
steering wheel on the
instrument panel.
When you press the fog lamp button, a fog lamp symbol
in the button and the fog lamp light on the instrument
panel cluster will come on to indicate that the fog lamps
and the parking lamps are on.
Press the button again to turn them off.
If you turn on the high-beam headlamps, the fog lamps
will turn off. They will turn back on again when you
switch to low-beam headlamps.When the Twilight Sentinel
®is on and the fog lamps are
turned on, the fog lamps, headlamps and parking
lamps will remain on.
The ignition must be on for the fog lamps to operate.
Cornering Lamps
The cornering lamps come on when the headlamps or
parking lamps are on and you signal a turn with the
multifunction lever. They provide more light for cornering.
Twilight Sentinel®
This lever is located next
to the exterior lamp
control. It automatically
turns the lamps on and off
by sensing how dark it
is outside.
To operate the Twilight Sentinel
®, leave the exterior
lamp control in the off position and move the TWILIGHT
lever to any position but OFF.
3-20

Warning Lights, Gages, and
Indicators
This part describes the warning lights and gages that may
be on your vehicle. The pictures will help you locate them.
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause
an expensive repair or replacement. Paying attention to
your warning lights and gages could also save you
or others from injury.
Warning lights come on when there may be or is a
problem with one of your vehicle’s functions. As you will
see in the details on the next few pages, some
warning lights come on briey when you start the
engine just to let you know they are working. If you are
familiar with this section, you should not be alarmed
when this happens.Gages can indicate when there may be or is a problem
with one of your vehicle’s functions. Often gages
and warning lights work together to let you know when
there is a problem with your vehicle.
When one of the warning lights comes on and stays on
when you are driving, or when one of the gages
shows there may be a problem, check the section that
tells you what to do about it. Follow this manual’s
advice. Waiting to do repairs can be costly – and even
dangerous. So please get to know your warning
lights and gages. They are a big help.
Your vehicle also has a Driver Information Center (DIC)
that works along with the warning lights and gages.
SeeDriver Information Center (DIC) on page 3-62for
more information.
Instrument Panel Cluster
The instrument panel cluster is designed to let you
know at a glance how your vehicle is running. You will
know how fast you are going, how much fuel you
are using and many of the other things you will need to
know to drive safely and economically.
3-44

If your vehicle is rst sold in the United States, the trip
odometer will return to zero after 999.9 miles
(1 609 km). If your vehicle is rst sold in Canada, the
trip odometer will return to zero after 1,242 miles
(1 999 km). The RESET TRIP A/B button only resets
the trip mode (A or B) that is being displayed. Each trip
mode must be reset individually.
Display Mode
On vehicles equipped with the analog cluster, this
button is located between the trip odometer and
ENG/MET button to the left of the steering wheel on the
instrument panel. Press DSPL MODE to turn the
backlighting and the digital speed image on and off.
On vehicles equipped with the digital cluster, press
DSPL MODE to turn the digital displays other than the
speedometer and gear display on and off.
English/Metric Button
By pressing this button
located to the left of the
steering wheel on the
instrument panel, you can
go back and forth from
English (miles) to
metric (kilometers).
Other readings such as temperature, fuel and trip
odometer also go back and forth between English
and metric.
Vehicle Speed Limiter
This feature prevents your vehicle from exceeding
speeds that the tires are not rated for. When this
happens, the engine’s fuel supply is shut off. When the
vehicle speed slows, the fuel supply will come on again.
3-48

To reset the average fuel economy, press the INFO
button until the MPG AVG is displayed on the DIC.
Press and hold the INFO RESET button until both the
fuel data display and DIC display reads 0.0.
The RANGE display shows how far the computer thinks
you can travel with the fuel that is in the tank. The
computer does not know what driving conditions will be
like for the rest of your trip, so the range is estimated
based on the recent fuel economy. Therefore, the range
reading may change as your driving habits change.
Going from city to highway driving may increase
the range reading.
On the analog cluster, fuel data can be obtained by
pressing the INFO button. SeeDriver Information
Center (DIC) on page 3-62.Driver Information Center (DIC)
This display gives you the status of many of your
vehicle’s systems. The DIC is also used to display driver
personalization features and warning/status messages.
All messages will appear in the DIC display, located
at the bottom of the instrument panel cluster.
DIC Controls and Displays
The Driver Information Center (DIC) buttons are located
to the right of the steering wheel on the instrument
panel, near the air outlets.
3-62

A. Windshield Washer Fluid Reservoir. SeeWindshield
Washer Fluid on page 5-41.
B. Underhood Fuse Block. See “Underhood Fuse Block”
underFuses and Circuit Breakers on page 5-108.
C. Engine Coolant Surge Tank and Pressure Cap. See
Coolant Surge Tank Pressure Cap on page 5-31
andCooling System on page 5-34.
D. Power Steering Fluid. SeePower Steering Fluid on
page 5-40.
E. Engine Oil Fill Cap. SeeEngine Oil on page 5-15.
F. Engine Oil Dipstick. SeeEngine Oil on page 5-15.
G. Brake Master Cylinder. SeeBrakes on page 5-43.
H. Transaxle Fluid Cap and Dipstick. SeeAutomatic
Transaxle Fluid on page 5-24.
I. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-22.Engine Oil
If the CHECK OIL LEVEL message appears on the
instrument cluster, it means you need to check
your engine oil level right away. For more information,
see “CHECK OIL LEVEL” underDIC Warnings and
Messages on page 3-65.
You should check your engine oil level regularly; this is
an added reminder.
5-15

Coolant Surge Tank Pressure Cap
Notice:If the pressure cap is not tightly installed,
coolant loss and possible engine damage may
occur. Be sure the cap is properly and tightly
secured.
Engine Overheating
You will nd an ENGINE COOLANT HOT, IDLE
ENGINE message or an ENGINE OVERHEATED,
STOP ENGINE message displayed in the Driver
Information Center (DIC). You will also hear a chime.
There is also an engine temperature warning light and/or
gage on the instrument panel cluster. SeeEngine
Coolant Temperature Warning Light on page 3-54and
Engine Coolant Temperature Gage on page 3-54.
Overheated Engine Protection
Operating Mode
If an overheated engine condition exists and the
message ENGINE OVERHEATED, STOP ENGINE is
displayed, an overheat protection mode which alternates
ring groups of cylinders helps prevent engine damage.
In this mode, you will notice a loss in power and
engine performance. This operating mode allows your
vehicle to be driven to a safe place in an emergency;
you may drive up to 50 miles (80 km). Driving extended
miles (km) and/or towing a trailer in the overheat
protection mode should be avoided.
Notice:After driving in the overheated engine
protection operating mode, to avoid engine damage,
allow the engine to cool before attempting any repair.
The engine oil will be severely degraded. Repair the
cause of coolant loss, change the oil and reset the oil
life system. SeeEngine Oil on page 5-15.
5-31

Hitches..........................................................4-45
HomeLink®Transmitter....................................2-46
HomeLink®Transmitter, Programming................2-47
Hood
Checking Things Under................................5-12
Release.....................................................5-13
Horn............................................................... 3-7
Horn Sounds at Lock......................................3-81
How the System Works...................................3-29
How to Add Coolant to the Coolant
Surge Tank.................................................5-36
How to Add Fluid............................................5-26
How to Check Power Steering Fluid..................5-41
How to Reset the Transaxle Fluid Indicator.........5-27
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-12
Hydroplaning..................................................4-21
I
If No Steam Is Coming From Your Engine..........5-33
If Steam Is Coming From Your Engine...............5-32
If the Light Is Flashing.....................................3-56
If the Light Is On Steady.................................3-57If You Are Caught in a Blizzard.........................4-30
If You Are Stuck in Sand, Mud, Ice or Snow.......4-32
If You Do Decide To Pull a Trailer.....................4-42
Ignition Positions.............................................2-24
Inadvertent Power Battery Saver.......................3-25
Infants and Young Children, Restraints...............1-31
Ination - Tire Pressure...................................5-74
Instrument Panel
Cluster.......................................................3-44
Overview..................................................... 3-4
Storage Area..............................................2-50
Instrument Panel Brightness.............................3-22
Interior Lamps................................................3-22
J
Jump Starting.................................................5-48
K
Key in Recall Memory.....................................3-76
Keyless Entry System....................................... 2-5
Keys............................................................... 2-3
8