2012 CADILLAC CTS check engine

Black plate (24,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
5-24 Instruments and Controls
This light comes on when the
StabiliTrak system is turned off.
If StabiliTrak is off, the Traction
Control System (TCS) is also off.
If the TCS is off, the system does
not assist in controlling the vehicle.
Turn on the TCS and the StabiliTrak
systems and the warning light
turns off.
SeeTraction Control System (TCS)
on page 9‑38 andStabiliTrak
®
System on page 9‑39 for more
information
Traction Control System
(TCS)/StabiliTrak®Light
The StabiliTrak system or the
Traction Control System (TCS)
indicator/warning light comes on
briefly when the engine is started. If the light does not come on, have
the vehicle serviced by the dealer.
If the system is working normally,
the indicator light turns off.
If the light is on and not flashing, the
TCS, and potentially the StabiliTrak
system have been disabled. A DIC
message may display. Check the
DIC messages to determine which
feature(s) is no longer functioning
and whether the vehicle requires
service.
If the indicator/warning light is on
and flashing, the TCS and/or the
StabiliTrak system is actively
working.
See
StabiliTrak
®System on
page 9‑39 andTraction Control
System (TCS) on page 9‑38 for
more information.
Engine Coolant
Temperature Warning
Light
The engine coolant temperature
warning light comes on briefly when
the vehicle is started.
If it does not, have the vehicle
serviced by your dealer. If the
system is working normally, the
indicator light then goes off.
If the light comes on and stays on
while driving, the vehicle may have
a problem with the cooling system.
Stop and turn off the vehicle to
avoid damage to the engine.
A warning chime sounds when this
light is on.
See Engine Overheating on
page 10‑23 for more information.

Black plate (25,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Instruments and Controls 5-25
Tire Pressure Light
For vehicles with the Tire Pressure
Monitor System (TPMS), this light
comes on briefly when the engine
is started. It provides information
about tire pressures and the TPMS.
When the Light Is On Steady
This indicates that one or more of
the tires are significantly
underinflated.
A Driver Information Center (DIC)
tire pressure message may also
display. SeeVehicle Messages on
page 5‑31 for more information.
Stop as soon as possible, and
inflate the tires to the pressure value
shown on the Tire and Loading
Information label. See Tire Pressure
on page 10‑70 for more information. When the Light Flashes First and
Then Is On Steady
If the light flashes for about a minute
and then stays on, there may be a
problem with the TPMS. If the
problem is not corrected, the light
will come on at every ignition cycle.
See
Tire Pressure Monitor
Operation on page 10‑73 for more
information.
Engine Oil Pressure Light
{WARNING
Do not keep driving if the oil
pressure is low. The engine can
become so hot that it catches fire.
Someone could be burned. Check
the oil as soon as possible and
have the vehicle serviced. Notice:
Lack of proper engine oil
maintenance can damage the
engine. The repairs would not be
covered by the vehicle warranty.
Always follow the maintenance
schedule for changing engine oil.
The oil pressure light should come
on briefly as the engine is started.
If it does not come on, have the
vehicle serviced by your dealer.
If the light comes on and stays on, it
means that oil is not flowing through
the engine properly. The vehicle
could be low on oil and might have
some other system problem. See
your dealer.

Black plate (32,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
5-32 Instruments and Controls
BATTERY VOLTS LOW
This message displays when the
electrical system is charging less
than 10 volts or the battery has
been drained.
If this message appears
immediately after starting the
engine, it is possible that the
generator can still recharge the
battery. The battery should recharge
while driving, but may take a few
hours to do so. Consider using an
auxiliary charger to boost the
battery after returning home or
arriving at a final destination. Make
sure you follow the manufacturer's
instructions.
If this message appears while
driving or after starting the vehicle
and stays on, have it checked
immediately to determine the cause
of this problem.To help the generator recharge the
battery quickly, reduce the load on
the electrical system by turning off
the accessories.
The normal battery voltage range is
11.5 to 15.5 volts. Monitor battery
voltage on the DIC by pressing the
vehicle information button until
Battery Voltage is displayed.
SERVICE BATTERY
CHARGING SYSTEM
This message displays when there
is a problem with the generator and
battery charging systems. Driving
with this problem could drain the
battery. Turn off all unnecessary
accessories. Stop and turn off the
vehicle as soon as it is safe to do
so. Have the electrical system
checked by your dealer. Under
certain conditions, the charging
system light may also turn on in
the instrument panel cluster. See
Charging System Light on
page 5‑19
for more information.
Brake System Messages
PARK BRAKE RELEASED
For vehicles with the electric
parking brake, this message
displays when the parking brake
has been released from the set
position. See the electric parking
brake information under Parking
Brake (Manual) on page 9‑34 or
Parking Brake (Electric) on
page 9‑35 for more information.
PARK BRAKE SET
For vehicles with the electric parking
brake, this message displays when
the parking brake has been applied
to the set position. See the electric
parking brake information under
Parking Brake (Manual) on
page 9‑34orParking Brake
(Electric) on page 9‑35 for more
information.

Black plate (33,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Instruments and Controls 5-33
PRESS BRAKE TO START
ENGINE (AUTOMATIC
TRANSMISSION ONLY)
If the vehicle has the keyless
access system, this message
displays if you try to start the engine
without having the brake pressed.
The brake needs to be pressed
when starting the engine. See
Ignition Positions (Key Access) on
page 9‑16orIgnition Positions
(Keyless Access) on page 9‑18 for
more information.
RELEASE PARK BRAKE
SWITCH
For vehicles with the electric parking
brake, this message displays if the
switch is pulled while the vehicle is
moving. See the electric parking
brake information under Parking
Brake (Manual) on page 9‑34 or
Parking Brake (Electric) on
page 9‑35 for more information.
SERVICE BRAKE ASSIST
This message displays if there is a
problem with the brake system. The
brake system warning light and the
antilock brake system (ABS)
warning light may also display on
the instrument panel cluster. See
Brake System Warning Light on
page 5‑22andAntilock Brake
System (ABS) Warning Light on
page 5‑23 for more information.
Stop as soon as possible and turn
off the vehicle. Restart the vehicle
and check for the message on the
DIC display. If the message displays
immediately or again after you begin
driving, the brake system needs
service. See your dealer as soon as
possible. See Antilock Brake
System (ABS) on page 9‑33 for
more information.
SERVICE BRAKE SYSTEM
This message displays, while the
ignition is on, when the brake fluid
level is low. The brake system
warning light on the instrument
panel cluster also comes on. See
Brake System Warning Light on
page 5‑22 for more information. This
message may also be displayed for
other brake system problems. Have
the brake system serviced by your
dealer as soon as possible.
SERVICE PARK BRAKE
For vehicles with the electric parking
brake, this message displays if a
problem is detected with the electric
parking brake system. See your
dealer for service.
STEP ON BRAKE TO
RELEASE PARK BRAKE
For vehicles with the electric parking
brake, this message displays if you
try to release the park brake system
without first pressing the brake
pedal. See the electric parking
brake information under Parking
Brake (Manual) on page 9‑34 or
Parking Brake (Electric) on
page 9‑35 for more information.

Black plate (35,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Instruments and Controls 5-35
Engine Cooling System
Messages
ENGINE HOT A/C (AIR
CONDITIONING) OFF
This message displays when the
engine coolant becomes hotter than
the normal operating temperature.
SeeEngine Coolant Temperature
Gauge on page 5‑16. To avoid
added strain on a hot engine,
the air conditioning compressor
automatically turns off. When the
coolant temperature returns to
normal, the air conditioning
compressor turns back on. You
can continue to drive the vehicle.
If this message continues to appear,
have the system repaired by your
dealer as soon as possible to avoid
damage to the engine.
ENGINE OVERHEATED IDLE
ENGINE
Notice: If you drive the vehicle
while the engine is overheating,
severe engine damage may
occur. If an overheat warning
appears on the instrument panel
cluster and/or DIC, stop the
vehicle as soon as possible. Do
not increase the engine speed
above normal idling speed.
See Engine Overheating on
page 10‑23 for more information.
This message displays when the
engine coolant temperature is too
hot. Stop and allow the vehicle
to idle until it cools down. If the
message does not clear in a
few minutes or if the overheat light
stays on, shut the vehicle off and
have it serviced before driving
again. See Engine Coolant
Temperature Warning Light on
page 5‑24. See
Overheated Engine Protection
Operating Mode on page 10‑24 for
information on driving to a safe
place in an emergency.
Engine Oil Messages
CHANGE ENGINE OIL SOON
When this message displays, it
means that service is required
for the vehicle. See your dealer.
See Maintenance Schedule on
page 11‑3 andEngine Oil on
page 10‑10 for more information.
When you reset the CHANGE
ENGINE OIL SOON message by
clearing it from the display, you still
must reset the engine oil life system
separately. For more information on
resetting the engine oil life system,
see Engine Oil Life System on
page 10‑12.
ENGINE OIL LOW ADD OIL
If the vehicle has an oil level sensor,
this message displays if the oil level
in the vehicle is low. Check the oil
level and correct it as necessary.

Black plate (36,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
5-36 Instruments and Controls
You may need to let the vehicle cool
or warm up and cycle the ignition to
be sure this message clears.
This message clears itself after
10 seconds, until the next ignition
cycle. SeeEngine Oil on
page 10‑10 for additional
information.
OIL PRESSURE LOW STOP
ENGINE
Notice: If you drive the vehicle
while the engine oil pressure is
low, severe engine damage may
occur. If a low oil pressure
warning appears on the
instrument panel cluster and/or
DIC, stop the vehicle as soon as
possible. Do not drive the vehicle
until the cause of the low oil
pressure is corrected. See Engine
Oil on page 10‑10 for more
information. This message displays when the
vehicle's engine oil pressure is low.
The oil pressure light may also
appear on the instrument panel
cluster. See
Engine Oil Pressure
Light on page 5‑25. See Engine Oil
on page 10‑10 for more information.
Stop the vehicle immediately, as
engine damage can result from
driving a vehicle with low oil
pressure. Have the vehicle serviced
by your dealer as soon as possible
when this message is displayed.
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays when the
engine power is being reduced to
protect the engine from damage.
There could be several malfunctions
that might cause this message.
Reduced engine power can affect
the vehicle's ability to accelerate.
If this message is on, but there is no
reduction in performance, proceed to your destination. The
performance may be reduced the
next time the vehicle is driven. The
vehicle may be driven at a reduced
speed while this message is on, but
acceleration and speed may be
reduced. Anytime this message
stays on, take the vehicle to your
dealer for service as soon as
possible.
Fuel System Messages
FUEL LEVEL LOW
This message displays when the
vehicle is low on fuel. Refill the fuel
tank as soon as possible. A chime
may sound when this message
displays. See
Filling the Tank on
page 9‑53.
TIGHTEN GAS CAP
This message displays when the
fuel cap has not been fully
tightened. Recheck the fuel cap to
ensure that it is on and tightened
properly.

Black plate (42,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
5-42 Instruments and Controls
STABILITRAK
COMPETITIVE MODE
This message displays when the
Competitive Driving Mode is
selected. When in this mode, the
Traction Control System (TCS) will
not be operating and the TCS/
StabiliTrak warning light will turn on.
Adjust your driving accordingly. See
Competitive Driving Mode on
page 9‑40for more information.
STABILITRAK NOT READY
This message may display after first
driving the vehicle and exceeding
30 km/h (19 mph) for 30 seconds.
The TCS/StabiliTrak warning light
on the instrument panel cluster also
comes on. The StabiliTrak system is
not functional until the message has
turned off. See StabiliTrak
®System
on page 9‑39 for more information.
STABILITRAK OFF
This message displays when you
turn off StabiliTrak, or when the
stability control system has been
automatically disabled. The TCS/ StabiliTrak warning light on the
instrument panel cluster also
comes on.
To realize the full benefits of the
stability enhancement system, you
should normally leave StabiliTrak
on. To turn StabiliTrak on or off, see
StabiliTrak
®System on page 9‑39.
There are several conditions that
can cause this message to appear:
.If there is overheating, which
could occur if StabiliTrak
activates continuously for an
extended period of time.
.If the brake system warning light
is on. See Brake System
Warning Light on page 5‑22.
.If the stability system takes
longer than usual to complete its
diagnostic checks due to driving
conditions.
.If an engine or vehicle-related
problem has been detected and
the vehicle needs service. See
your dealer. The message turns off as soon
as the conditions that caused the
message to be displayed are no
longer present.
SUSPENSION MODE SPORT
(CTS-V ONLY)
This message will be displayed
when sport mode is selected using
the Magnetic Ride Control button in
the center of the instrument panel.
See
Magnetic Ride Control on
page 9‑40 for more information.
SUSPENSION MODE TOUR
(CTS-V ONLY)
This message will be displayed
when touring mode is selected
using the Magnetic Ride Control
button in the center of the
instrument panel. See Magnetic
Ride Control on page 9‑40 for more
information.
TRACTION CONTROL OFF
This message displays when the
traction control system has been
turned off.

Black plate (6,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
8-6 Climate Controls
Air Vents
Use the air outlets located in the
center and on the side of the
instrument panel to direct the
airflow. Use the thumbwheels near
the air outlets to open or close off
the airflow.
Operation Tips
.Clear away any ice, snow,
or leaves from air inlets at the
base of the windshield that could
block the flow of air into the
vehicle.
.Keep the path under the front
seats clear of objects to help
circulate the air inside of the
vehicle more effectively.
.Use of non‐GM approved hood
deflectors can adversely affect
the performance of the system.
Check with your dealer before
adding equipment to the outside
of the vehicle.
Maintenance
Passenger Compartment
Air Filter
The passenger compartment air
filter traps most of the dust and
pollen from the air entering the
vehicle. The filter will need to
be changed periodically. See
Maintenance Schedule on
page 11‑3.
Using the climate control system
without the passenger air filter
installed could let water or other
debris enter the system. This could
cause a water leak or noises. Make
sure a new air filter is installed after
removing the old one.
The passenger compartment air
filter is located under the hood
below the windshield wiper arm
and the screen on the passenger
side of the vehicle. SeeEngine
Compartment Overview on
page 10‑6 for more information on
location.