2012 CADILLAC CTS check engine light

Black plate (21,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Vehicle Care 10-21
2. Then keep turning the pressurecap slowly and remove it.3. Fill the coolant surge tank withthe proper mixture, to slightly
above the FROID/FULL COLD
line on the side of the coolant
surge tank.
4. With the coolant surge tank pressure cap off, start the
engine and let it run until you
can feel the upper radiator hose
getting hot. The upper radiator
hose is the top hose coming out
of the radiator, on the passenger
side of the vehicle. Watch out for
the engine cooling fans. By this time, the coolant level
inside the coolant surge tank
may be lower. If the level is
lower, add more of the proper
mixture to the coolant surge tank
until the level reaches the
FROID/FULL COLD line on the
side of the coolant surge tank.
5. Then replace the pressure cap. Be sure the pressure cap is
hand-tight and fully seated.
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.
Recheck the coolant level in the
bottle next time you use your
vehicle to ensure the system is full
when cold.

Black plate (106,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
10-106 Vehicle Care
{WARNING
Using an open flame near a
battery can cause battery gas to
explode. People have been hurt
doing this, and some have been
blinded. Use a flashlight if you
need more light.
Be sure the battery has enough
water. You do not need to add
water to the battery installed in
your new vehicle. But if a battery
has filler caps, be sure the right
amount of fluid is there. If it is low,
add water to take care of that
first. If you do not, explosive gas
could be present.
Battery fluid contains acid that
can burn you. Do not get it on
you. If you accidentally get it in
your eyes or on your skin, flush
the place with water and get
medical help immediately.
{WARNING
Fans or other moving engine
parts can injure you badly. Keep
your hands away from moving
parts once the engine is running.
5. Check that the jumper cables do not have loose or missing
insulation. If they do, you could
get a shock. The vehicles could
be damaged too.
Before you connect the cables,
here are some basic things you
should know. Positive (+) will go
to positive (+) or to a remote
positive (+) terminal if the vehicle
has one. Negative (−) will go to a
heavy, unpainted metal engine
part or to a remote negative (−)
terminal if the vehicle has one.
Do not connect positive (+) to
negative (−) or you will get a
short that would damage the
battery and maybe other parts
too. And do not connect the negative (−) cable to the
negative (−) terminal on the dead
battery because this can cause
sparks.
6. Connect the red positive (+)
cable to the positive (+) terminal
of the dead battery. Use a
remote positive (+) terminal if the
vehicle has one.
7. Do not let the other end touch metal. Connect it to the
positive (+) terminal of the
good battery. Use a remote
positive (+) terminal if the vehicle
has one.

Black plate (10,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
11-10 Service and Maintenance
Additional
Maintenance and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional
maintenance services may be
required. It is recommended
that your dealer perform these
services—their trained dealer
technicians know your vehicle best.
Your dealer can also perform a
thorough assessment with a
multi‐point inspection to recommend
when your vehicle may need
attention. The following list is
intended to explain the services and
conditions to look for that may
indicate services are required. Battery
The battery supplies power to start
the engine and operate any
additional electrical accessories.
.To avoid break‐down or failure to
start the vehicle, maintain a
battery with full cranking power.
.Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion‐free.
Belts
.Belts may need replacing if they
squeak or show signs of
cracking or splitting.
.Trained dealer technicians
can inspect the belts and
recommend replacement when
necessary. Brakes
Brakes stop the vehicle and are
crucial to safe driving.
.Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
.Trained dealer technicians have
access to tools and equipment
to inspect the brakes and
recommend quality parts
engineered for the vehicle.
Fluids
Proper fluid levels and approved
fluids protect the vehicle’s
systems and components. See
Recommended Fluids and
Lubricants on page 11‑13 for GM
approved fluids.
.Engine oil and windshield
washer fluid levels should be
checked at every fuel fill.
.Instrument cluster lights may
come on to indicate that fluids
may be low and need to be
filled.

Black plate (1,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
INDEX i-1
A
Accessories andModifications . . . . . . . . . . . . . . . . . 10-3
Accessory Power . . . . . . . . . . . . . . 9-22
Adaptive Forward Lighting (AFL) . . . . . . . . . . . . . . . . . 6-5
Add-On Electrical
Equipment . . . . . . . . . . . . . . . . . . . 9-61
Additional Information, OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-5
Adjustments
Lumbar, Front Seats . . . . . . . . . . . 3-5
Thigh Support . . . . . . . . . . . . . . . . . 3-6
Air Cleaner/Filter, Engine . . . . . 10-15
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 8-6
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-6
Airbag Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . 3-32 Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . 3-33
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . 3-25
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . 3-27
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-25
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . 3-26
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-23
Where Are the Airbags? . . . . . . 3-22
Airbags Passenger Status Indicator . . . 5-18
Readiness Light . . . . . . . . . . . . . . 5-17
Servicing Airbag-EquippedVehicles . . . . . . . . . . . . . . . . . . . . . 3-32
System Check . . . . . . . . . . . . . . . . 3-20 Alarm System
Anti-theft . . . . . . . . . . . . . . . . . . . . . . 2-24
All-Wheel Drive . . . . . . . . . 10-30, 9-33
AM-FM Radio . . . . . . . . . . . . . . . . . . . 7-8
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . 7-16
Anti-theft
Alarm System . . . . . . . . . . . . . . . . 2-24
Alarm System Messages . . . . . 5-43
Antilock Brake System (ABS) . . . . . . . . . . . . . . . . 9-33
Warning Light . . . . . . . . . . . . . . . . . 5-23
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . 10-110
Interior . . . . . . . . . . . . . . . . . . . . . 10-113
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . 5-10
Audio Players . . . . . . . . . . . . . . . . . 7-16
CD . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
CD/DVD . . . . . . . . . . . . . . . . . . . . . . 7-19
MP3 . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24

Black plate (3,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
INDEX i-3
Capacities andSpecifications . . . . . . . . . . . . . . . . 12-2
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 9-26
Liftgate . . . . . . . . . . . . . . . . . . . . . . . 2-20
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Winter Driving . . . . . . . . . . . . . . . . . 9-9
Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Management System . . . . . . . . . . 4-3
Cargo Net . . . . . . . . . . . . . . . . . . . . . . 4-4
Cautions, Danger, and
Warnings . . . . . . . . . . . . . . . . . . . . . . . . iv
CD Player . . . . . . . . . . . . . . . . . . . . . 7-16
CD/DVD Player . . . . . . . . . . . . . . . . 7-19
Center Console Storage . . . . . . . . 4-2
Central Door Unlock System . . . 2-16
Chains, Tire . . . . . . . . . . . . . . . . . . 10-83
Charging System Light . . . . . . . . 5-19
Check Engine Light . . . . . . . . . . . . . . . . . . 5-19
Ignition
Transmission Lock . . . . . . . . 10-31 Child Restraints
Infants and Young
Children . . . . . . . . . . . . . . . . . . . . . 3-37
Lower Anchors and Tethers for Children . . . . . . . . . 3-43
Older Children . . . . . . . . . . . . . . . . 3-34
Securing . . . . . . . . . . . . . . . . 3-49, 3-52
Systems . . . . . . . . . . . . . . . . . . . . . . 3-39
Cigarette Lighter . . . . . . . . . . . . . . . . 5-9
Circuit Breakers . . . . . . . . . . . . . . 10-40
Cleaning Exterior Care . . . . . . . . . . . . . . 10-110
Interior Care . . . . . . . . . . . . . . . 10-113
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . 8-1
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Cluster, Instrument . . . . . . . . . . . . 5-11
Clutch, Hydraulic . . . . . . . . . . . . . 10-14
Collision Damage Repair . . . . . 13-14
Compact Spare Tire . . . . . . . . .10-103
Compass . . . . . . . . . . . . . . . . . . . . . . . 5-7
Messages . . . . . . . . . . . . . . . . . . . . 5-34
Competitive Driving . . . . . . . . . . . . . 9-6 Competitive Driving Mode . . . . . 9-40
Compressor Kit, Tire
Sealant . . . . . . . . . . . . . . . . . . . . . . 10-86
Connections, OnStar
®. . . . . . . . . 14-4
Control of a Vehicle . . . . . . . . . . . . . 9-4
Convenience Net . . . . . . . . . . . . . . . 4-6
Convex Mirrors . . . . . . . . . . . . . . . . 2-28
Coolant Engine . . . . . . . . . . . . . . . . . . . . . . 10-18
Engine TemperatureGauge . . . . . . . . . . . . . . . . . . . . . . 5-16
Engine Temperature Warning Light . . . . . . . . . . . . . . . 5-24
Cooling System . . . . . . . . . . . . . . . 10-18 Engine Messages . . . . . . . . . . . . 5-35
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . 13-13
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Engine . . . . . . . . . . . . . . . . . . . . . . . . 10-9
Cruise Control . . . . . . . . . . . . . . . . . 9-41
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
Messages . . . . . . . . . . . . . . . . . . . . 5-34

Black plate (5,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
INDEX i-5
EngineAir Cleaner/Filter . . . . . . . . . . . 10-15
Check and Service Engine
Soon Light . . . . . . . . . . . . . . . . . . 5-19
Compartment Overview . . . . . . . 10-6
Coolant . . . . . . . . . . . . . . . . . . . . . 10-18
Coolant Heater . . . . . . . . . . . . . . . 9-22
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 5-16
Coolant Temperature Warning Light . . . . . . . . . . . . . . . 5-24
Cooling System . . . . . . . . . . . . . 10-18
Cooling System Messages . . . 5-35
Cover . . . . . . . . . . . . . . . . . . . . . . . . . 10-9
Drive Belt Routing . . . . . . . . . . . . 12-4
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-26
Oil Pressure Gauge . . . . . . . . . . 5-15
Overheated Protection Operating Mode . . . . . . . . . . . 10-24
Overheating . . . . . . . . . . . . . . . . 10-23
Power Messages . . . . . . . . . . . . . 5-36
Pressure Light . . . . . . . . . . . . . . . . 5-25
Running While Parked . . . . . . . . 9-26
Speed Limiter . . . . . . . . . . . . . . . . . 5-14
Starting . . . . . . . . . . . . . . . . . . 1-4, 9-20 Engine Oil
Life System . . . . . . . . . . . . . . . . . 10-12
Messages . . . . . . . . . . . . . . . . . . . . 5-35
Entry Lighting . . . . . . . . . . . . . . . . . . . 6-7
Equipment, Towing . . . . . . . . . . . . 9-61
Event Data Recorders . . . . . . . . 13-19
Exit Lighting . . . . . . . . . . . . . . . . . . . . 6-8
Extender, Safety Belt . . . . . . . . . . 3-18
Exterior Lamp Controls . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . 6-2
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
F
FeaturesMemory . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Filter, Engine Air Cleaner . . . . . . . . . 10-15
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-2
Flashers, Hazard Warning . . . . . . 6-5
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-84 Changing . . . . . . . . . . . . . . . . . . . 10-95
Floor Mats . . . . . . . . . . . . . . . . . . . 10-116 Fluid
Automatic Transmission . . . . 10-14
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-27
Power Steering . . . . . . . . . . . . . 10-24
Washer . . . . . . . . . . . . . . . . . . . . . 10-25
Fog Lamps Bulb Replacement . . . . . . 10-37, 6-6
Folding Mirrors . . . . . . . . . . . . . . . . 2-28
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Front Seats
Adjustment . . . . . . . . . . . . . . . . . . . . 3-3
Heated and Ventilated . . . . . . . . 3-10
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-50 Additives . . . . . . . . . . . . . . . . . . . . . 9-52
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 9-55
Filling the Tank . . . . . . . . . . . . . . . 9-53
Fuels in Foreign Countries . . . . 9-52
Gasoline Specifications . . . . . . . 9-51
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Recommended . . . . . . . . . . . . . . . 9-51
Requirements, California . . . . . 9-51
System Messages . . . . . . . . . . . . 5-36

Black plate (7,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
INDEX i-7
I
Ignition Positions . . . . . . . . 9-16, 9-18
Ignition Transmission LockCheck . . . . . . . . . . . . . . . . . . . . . . . 10-31
Immobilizer . . . . . . . . . . . . . . . . . . . . 2-25
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . 3-37
Infotainment . . . . . . . . . . . . . . . . . . . . 7-1
Instrument Cluster . . . . . . . . . . . . . 5-11
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . . 4-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . iii
J
Jump Starting . . . . . . . . . . . . . . . .10-104
K
Key and Lock Messages . . . . . . . 5-37
Keyless Entry Remote (RKE) System . . . 2-5, 2-6
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
L
Labeling, Tire Sidewall . . . . . . . . 10-65
Lamp Messages . . . . . . . . . . . . . . . 5-39
Lamps Daytime Running (DRL) . . . . . . . 6-3
Exterior Controls . . . . . . . . . . . . . . . 6-1
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . . 6-2
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . . . . . 6-9
License Plate . . . . . . . . . . . . . . . 10-38
Malfunction Indicator . . . . . . . . . 5-19
On Reminder . . . . . . . . . . . . . . . . . 5-26
Reading . . . . . . . . . . . . . . . . . . . . . . . 6-7
Lap-Shoulder Belt . . . . . . . . . . . . . 3-14
LATCH System Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . 3-49
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . 3-43
Liftgate Carbon Monoxide . . . . . . . . . . . . . 2-20 Light
StabiliTrak®OFF . . . . . . . . . . . . . 5-23
Lighter, Cigarette . . . . . . . . . . . . . . . 5-9
Lighting Adaptive Forward . . . . . . . . . . . . . . 6-5
Entry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Illumination Control . . . . . . . . . . . . 6-7
Parade Dimming . . . . . . . . . . . . . . . 6-8
Lights Airbag Readiness . . . . . . . . . . . . . 5-17
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 5-23
Brake System Warning . . . . . . . 5-22
Charging System . . . . . . . . . . . . . 5-19
Cruise Control . . . . . . . . . . . . . . . . 5-27
Engine Coolant Temperature Warning . . . . . . . 5-24
Engine Oil Pressure . . . . . . . . . . 5-25
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-2
Front Fog Lamp . . . . . . . . . . . . . . 5-26
High-Beam On . . . . . . . . . . . . . . . . 5-26
High/Low Beam Changer . . . . . . 6-2

Black plate (9,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
INDEX i-9
N
NavigationVehicle Data Recordingand Privacy . . . . . . . . . . . . . . . 13-20
Navigation, OnStar
®. . . . . . . . . . . 14-2
Net Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Net, Convenience . . . . . . . . . . . . . . 4-6
New Vehicle Break-In . . . . . . . . . . 9-16
O
Object Detection System Messages . . . . . . . . . . . . . . . . . . . . 5-39
Object Detection, Side Blind Zone Alert (SBZA) . . . . . . . . . . . 9-45
Odometer . . . . . . . . . . . . . . . . . . . . . . 5-13 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
Off-Road
Recovery . . . . . . . . . . . . . . . . . . . . . . 9-5
Oil Engine . . . . . . . . . . . . . . . . . . . . . . 10-10
Engine Oil Life System . . . . . 10-12
Engine Oil PressureGauge . . . . . . . . . . . . . . . . . . . . . . 5-15
Messages . . . . . . . . . . . . . . . . . . . . 5-35
Pressure Light . . . . . . . . . . . . . . . . 5-25 Older Children, Restraints . . . . . 3-34
Online Owner Center . . . . . . . . . . 13-6
OnStar
®
Additional Information . . . . . . . . 14-5
Connections . . . . . . . . . . . . . . . . . . 14-4
Diagnostics . . . . . . . . . . . . . . . . . . . 14-5
Emergency . . . . . . . . . . . . . . . . . . . 14-2
Navigation . . . . . . . . . . . . . . . . . . . . 14-2
Overview . . . . . . . . . . . . . . . . . . . . . 14-1
Security . . . . . . . . . . . . . . . . . . . . . . 14-2
OnStar
®System . . . . . . . . . . . . . . . 1-25
Operation, Infotainment System . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Ordering Service Publications . . . . . . . . 13-17
Outlets
Power . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Overheated Engine Protection
Operating Mode . . . . . . . . . . . . . 10-24
Overheating, Engine . . . . . . . . . . 10-23
Overview, OnStar
®. . . . . . . . . . . . 14-1
P
Parade Dimming . . . . . . . . . . . . . . . . 6-8
Park
Shifting into . . . . . . . . . . . . . . . . . . . 9-23
Shifting out of . . . . . . . . . . . . . . . . . 9-24
Parking . . . . . . . . . . . . . . . . . . . . . . . . 9-25 Assist, Ultrasonic . . . . . . . . . . . . . 9-44
Brake . . . . . . . . . . . . . . . . . . . 9-34, 9-35
Brake and P (Park)
Mechanism Check . . . . . . . . 10-32
Over Things That Burn . . . . . . . 9-25
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . 5-18
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Passenger Sensing System . . . 3-27
Perchlorate Materials
Requirements, California . . . . . 10-3
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-46
Phone Bluetooth . . . . . . . . . . . . . . . . . . . . . 7-35