2012 CADILLAC CTS service

Black plate (22,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
5-22 Instruments and Controls
Brake System Warning
Light
The vehicle brake system consists
of two hydraulic circuits. If one
circuit is not working, the remaining
circuit can still work to stop the
vehicle. For normal braking
performance, both circuits need to
be working
If the warning light comes on, there
is a brake problem. Have the brake
system inspected right away.
MetricEnglish
This light should come on briefly
when the ignition is placed in ON/
RUN. If it does not come on then,
have it fixed so it will be ready to
warn if there is a problem. When the ignition is on, the brake
system warning light also comes
on when the parking brake is set.
The light flashes or stays on if the
parking brake is not fully released.
If the light stays on after the parking
brake is fully released, there is a
base brake problem.
{CAUTION
The brake system might not be
working properly if the brake
system warning light is on.
Driving with the brake system
warning light on can lead to a
crash. If the light is still on after
the vehicle has been pulled off
the road and carefully stopped,
have the vehicle towed for
service.
For vehicles with the Electric
Parking Brake (EPB), this red brake
status light comes on when the
parking brake is applied. If the light
continues flashing after the parking brake is released, or while driving,
there is a problem with the Electric
Parking Brake system.
If the light does not come on,
or remains flashing, see your dealer.For vehicles with the Electric
Parking Brake (EPB), this parking
brake warning light should come on
briefly when ignition is placed in ON/
RUN. If it does not come on then,
have it fixed so it will be ready to
warn if there is a problem.
If this parking brake light comes on,
there is a problem with a system
on the vehicle that is causing the
parking brake system to work at a
reduced level. The vehicle can still
be driven, but should be taken to a
dealer

Black plate (23,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Instruments and Controls 5-23
SeeBrake Assist (Except CTS-V)
on page 9‑37 for more information.
Antilock Brake System
(ABS) Warning Light
The Antilock Brake System (ABS),
this light comes on briefly when the
engine is started.
If the light does not come on, have it
fixed so it will be ready to warn if
there is a problem.
If the ABS light stays on, turn the
ignition off. If the light comes on
while driving, stop as soon as it is
safely possible and turn the ignition
off. A chime may also sound when
the light comes on steady. If this
happens, start the engine again to
reset the system. If the ABS light
stays on, or comes on again while driving, the vehicle needs service.
If the regular brake system warning
light is not on, the vehicle still has
brakes, but not antilock brakes.
If the regular brake system warning
light is also on, the vehicle does not
have antilock brakes and there is a
problem with the regular brakes.
See
Brake System Warning Light on
page 5‑22.
For vehicles with a Driver
Information Center (DIC), see
Driver Information Center (DIC) on
page 5‑27 for all brake-related DIC
messages.
Up-Shift Light
The vehicle may have an up-shift
light. It indicates when to shift to
the next higher gear for best fuel
economy. See
Manual Transmission on
page 9‑31 for more information.
For the CTS-V, the tracer lights
function as a performance up-shift
light.
The tracers flash to indicate when
to shift to the next higher gear to
avoid the engine speed limit. See
Automatic Transmission on
page 9‑27 orManual Transmission
on page 9‑31 for more information.
StabiliTrak®OFF Light
This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your
dealer.

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 (26,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
5-26 Instruments and Controls
Security Light
The security light should come on
briefly as the engine is started. If the
system is working normally, the
indicator light turns off. If it does not
come on, have the vehicle serviced
by your dealer.
If the light stays on and the engine
does not start, there could be a
problem with the theft-deterrent
system.
This light is also used to indicate the
status of the anti-theft alarm system
when the ignition is turned off. The
light will flash rapidly if the alarm
system is arming and one or more
of the monitored entry points is not
closed. The light will stay on if the
alarm is arming and all entry points
are closed.For information regarding this light
and the vehicle's security system,
see
Anti-theft Alarm System on
page 2‑24.
High-Beam On Light
The high‐beam on light comes on
when the high-beam headlamps are
in use.
See Headlamp High/Low-Beam
Changer on page 6‑2 for more
information.
Front Fog Lamp Light
The fog lamp light comes on when
the fog lamps are in use.
The light goes out when the fog
lamps are turned off. See Fog
Lamps on page 6‑6 for more
information.
Lamps On Reminder
This light comes on whenever the
parking lamps are on.

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.