2003 CADILLAC CTS ignition

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Traction Control System Warning
(TRAC OFF) Light
If the TRAC OFF
warning light comes on
and stays on, there may
be a problem with the
traction control system.
The TRAC OFF light will come on briefly when you
turn the ignition to ON. If it doesn't come on then,
have it fixed so it will be ready to warn you if there is
a problem.The light will also come on if you turn the traction
control system OFF using the Traction On/Off button.
The traction control TC button is located in the
glove box.
If the TRAC OFF light stays on or comes on while you
are driving, pull off the road as soon as possible and stop
carefully. Try resetting the system by turning the
ignition off then back on. If the light still stays on or
comes back on again while you are driving, your vehicle
needs service. Have the traction control system
inspected as soon as possible. See ªTraction Control
Systemº in the Index.

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Engine Coolant Temperature
Warning Light
This light tells you that your
engine has overheated.
This light will come on when you first start the vehicle
as a check to let you know that the light is working. It
will go out after a few seconds. If the light does not
come on, the bulb may be burned out. See your dealer
for assistance in changing the bulb.
If the light does not go out or if the light comes on and
stays on while you are driving, your vehicle may have a
problem with the cooling system. You should stop the
vehicle and turn off the engine as soon as possible to
avoid damage to the engine. A warning chime will
sound when this light is on, also.
See ªEngine Overheatingº in the Index.
Malfunction Indicator Lamp
(Check Engine Light)
Your vehicle is equipped
with a computer which
monitors operation of the
fuel, ignition and emission
control systems.
This system is called OBD II (On
-Board
Diagnostics
-Second Generation) and is intended to
assure that emissions are at acceptable levels for the life
of the vehicle, helping to produce a cleaner
environment. The CHECK ENGINE light comes on to
indicate that there is a problem and service is required.
Malfunctions often will be indicated by the system
before any problem is apparent. This may prevent more
serious damage to your vehicle. This system is also
designed to assist your service technician in correctly
diagnosing any malfunction.

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NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead to costly repairs that may not be
covered by your warranty.
NOTICE:
Modifications made to the engine, transmission,
exhaust, intake or fuel system of your vehicle or
the replacement of the original tires with other
than those of the same Tire Performance Criteria
(TPC) can affect your vehicle's emission controls
and may cause this light to come on.
Modifications to these systems could lead to
costly repairs not covered by your warranty. This
may also result in a failure to pass a required
Emission Inspection/Maintenance test.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running. If the light doesn't come on, have it repaired.
This light will also come on during a malfunction in one
of two ways:

Light Flashing
-- A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer or qualified service center diagnosis
and service may be required.

Light On Steady
-- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and
service may be required.

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Fuel Gage
The fuel gage shows
approximately how much
fuel is in the tank. It works
only when the ignition is
in ON.
If the fuel supply gets low, the Fuel Level Low message
will appear on the DIC and a single chime will sound.Here are a few concerns some owners have had about
the fuel gage. All of these situations are normal and do
not indicate that anything is wrong with the fuel gage:

At the gas station the gas pump shuts off before the
gage reads full.

The gage may change when you turn, stop quickly or
accelerate quickly.

It takes a little more or less fuel to fill the tank than
the gage indicated. For example, the gage may have
indicated that the tank was half full, but it actually
took a little more or less than half the tank's capacity
to fill the tank.

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Change Trans (Transmission) Fluid
This symbol appears
with the Change Trans
Fluid message.
This message indicates that the life of the transmission
fluid has expired and it should be changed within
200 miles. See ªMaintenance Scheduleº and
ªRecommended Fluids and Lubricantsº in the Index
for the proper fluid and change intervals.
When you reset the Change Trans Fluid message by
clearing it from the display, you still must reset the
transmission fluid life monitor separately. For more
information on resetting the transmission fluid life
monitor, see ªTransmission Fluid Life Monitor, How to
Resetº in the Index.Check Brake Fluid This symbol appears
with the Check Brake
Fluid message.
This message will display if the ignition is in ON to
inform the driver that the brake fluid level is low. Have
the brake system serviced by a technician as soon as
possible. See ªBrake System Warning Lightº in
the Index.

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Passenger Door Ajar
This symbol appears
with the Passenger Door
Ajar message.
When this message appears on the display, it means
that the passenger's side front door was not closed
completely. You should make sure that the door is
closed completely.Personalization Off/Driver Identification
(Navigation System Only)
This symbol appears
with the Personalization
Off message.
When this message appears, the personalization features
previously stored are turned off. If you want your
customized settings to be automatically recalled when
you use the remote keyless entry transmitter or when
you remove the key from the ignition, you must enable
them in the DIC. See ªVehicle Programming and
Personalization Featuresº later in this section for more
information.
This message is also used to identify the
driver (1, 2 or 3) on the Navigation system.

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Service Air Bag
This symbol appears
with the Service Air
Bag message.
There is a problem with the air bag system when this
message appears. Have your vehicle serviced by a
qualified technician at your dealership immediately.
See ªAir Bag Readiness Lightº in the Index for more
information.
Service Charging System
This symbol appears with
the Service Charging
System message.
This message will display when a problem with the
charging system has been detected. Have your vehicle
serviced at your dealership.Service Electrical System
This symbol appears with
the Service Electrical
System message.
This message will display if an electrical problem has
occurred within the Powertrain Control Module (PCM)
or the ignition switch. Have your vehicle serviced by
your dealership.
Service Fuel System
This symbol appears
with the Service Fuel
System message.
The Powertrain Control Module (PCM) has detected a
problem within the fuel system when this message
appears. Have your vehicle serviced by your dealership.

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Service Idle Control
This symbol appears
with the Service Idle
Control message.
A problem with the idle control has occurred when this
message displays. Have your vehicle serviced by your
dealership.Service Stability Sys MessageThis symbol appears
with the Service Stability
System message.
Your vehicle may be equipped with a vehicle stability
enhancement system called Stabilitrak.
See ªStabilitrakº in the Index. The Service Stability Sys
message will be displayed if there has been a problem
detected with Stabilitrak (if equipped).
If the Service Stability Sys message comes on while you
are driving, pull off the road as soon as possible and stop
carefully. Try resetting the system by turning the
ignition off then back on. If the Service Stability Sys
message still stays on or comes back on again while you
are driving, your vehicle needs service. Have the
Stabilitrak system inspected as soon as possible.