2014 CADILLAC ATS check engine light

Black plate (30,1)Cadillac ATS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6014430) - 2014 - 2nd Edition - 8/23/13
9-30 Driving and Operating
suddenly slows or stops. Always
leave enough room up ahead to
stop, even with ABS.
Using ABS
Do not pump the brakes. Just hold
the brake pedal down firmly and let
ABS work. You might hear the ABS
pump or motor operating and feel
the brake pedal pulsate, but this is
normal.
Braking in Emergencies
ABS allows you to steer and brake
at the same time. In many
emergencies, steering can help
more than even the very best
braking.
Parking Brake (Electric)
Automatic Transmission
Manual TransmissionIf equipped with an Electric Parking
Brake (EPB), the switch is on the
center console for manual
transmission vehicles, or on the left
side of the instrument panel for
automatic transmission vehicles.
The EPB can always be activated,
even if the ignition is off. To prevent
draining the battery, avoid repeated
cycles of the EPB when the engine
is not running.
The system has a red parking brake
status light and an amber parking
brake warning light. See
Parking
Brake Light on page 5-19 and
Service Electric Parking Brake Light
on page 5-19. There are also
parking brake-related Driver
Information Center (DIC) messages.
See Brake System Messages on
page 5-32. In case of insufficient
electrical power, the EPB cannot be
applied or released.
Before leaving the vehicle, check
the red parking brake status light to
ensure that the parking brake is
applied.

Black plate (34,1)Cadillac ATS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6014430) - 2014 - 2nd Edition - 8/23/13
9-34 Driving and Operating
vehicle wheel brakes to assist the
driver in keeping the vehicle on the
intended path.
If cruise control is being used and
traction control or StabiliTrak begins
to limit wheel spin, cruise control will
disengage. Cruise control may be
turned back on when road
conditions allow.
Both systems come on
automatically when the vehicle is
started and begins to move. The
systems may be heard or felt while
they are operating or while
performing diagnostic checks. This
is normal and does not mean there
is a problem with the vehicle.
It is recommended to leave both
systems on for normal driving
conditions, but it may be necessary
to turn TCS off if the vehicle gets
stuck in sand, mud, ice, or snow.
SeeIf the Vehicle Is Stuck on
page 9-11 and“Turning the Systems
Off and On” later in this section.
The indicator light for both systems
is in the instrument cluster. This
light will:
.Flash when TCS is limiting
wheel spin.
.Flash when StabiliTrak is
activated.
.Turn on and stay on when either
system is not working.
If either system fails to turn on or to
activate, a message displays in the
Driver Information Center (DIC), and
dcomes on and stays on to
indicate that the system is inactive
and is not assisting the driver in
maintaining control. The vehicle is
safe to drive, but driving should be
adjusted accordingly. If
dcomes on and stays on:
1. Stop the vehicle.
2. Turn the engine off and wait 15 seconds.
3. Start the engine.
Drive the vehicle. If
dcomes on
and stays on, the vehicle may need
more time to diagnose the problem.
If the condition persists, see your
dealer.

Black plate (1,1)Cadillac ATS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6014430) - 2014 - 2nd Edition - 8/23/13
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-2
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-2
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-3
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 10-3
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-5
Engine Oil . . . . . . . . . . . . . . . . . . 10-10
Engine Oil Life System . . . . . 10-12
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-14
Manual Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-14
Hydraulic Clutch . . . . . . . . . . . . 10-14
Engine Air Cleaner/Filter . . . . 10-15
Cooling System . . . . . . . . . . . . 10-16
Engine Coolant . . . . . . . . . . . . . 10-17
Engine Overheating . . . . . . . . 10-20 Washer Fluid . . . . . . . . . . . . . . . 10-22
Brakes . . . . . . . . . . . . . . . . . . . . . 10-22
Brake Fluid . . . . . . . . . . . . . . . . . 10-23
Battery . . . . . . . . . . . . . . . . . . . . . 10-25
All-Wheel Drive . . . . . . . . . . . . . 10-26
Starter Switch Check . . . . . . . 10-26
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-27
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-27
Wiper Blade Replacement . . . . . . . . . . . . . . 10-28
Windshield Replacement . . . 10-28
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-29
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-29
Halogen Bulbs . . . . . . . . . . . . . . 10-29
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . 10-29
LED Lighting . . . . . . . . . . . . . . . 10-29
Back-Up Lamps . . . . . . . . . . . . 10-30
License Plate Lamp . . . . . . . . 10-30
Replacement Bulbs . . . . . . . . . 10-31
Electrical System
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-31
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-32
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . 10-32
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-35
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-38
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-40
All-Season Tires . . . . . . . . . . . . 10-41
Winter Tires . . . . . . . . . . . . . . . . 10-41
Run-Flat Tires . . . . . . . . . . . . . . 10-42
Summer Tires . . . . . . . . . . . . . . 10-43
Tire Sidewall Labeling . . . . . . 10-43
Tire Designations . . . . . . . . . . . 10-44
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . 10-45
Tire Pressure . . . . . . . . . . . . . . . 10-47
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . 10-49
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . 10-49
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . 10-50

Black plate (15,1)Cadillac ATS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6014430) - 2014 - 2nd Edition - 8/23/13
Vehicle Care 10-15
Do not remove the cap to check the
fluid level or to top off the fluid level.
Remove the cap only when
necessary to add the proper fluid
until the level reaches the MIN line.
Engine Air Cleaner/Filter
The engine air cleaner/filter is in the
engine compartment on the driver
side of the vehicle. SeeEngine
Compartment Overview on
page 10-5 for location.
When to Inspect the Engine Air
Cleaner/Filter
Inspect the air cleaner/filter at the
scheduled maintenance intervals.
SeeMaintenance Schedule on
page 11-3. If you are driving in
dusty/dirty conditions, inspect the
filter at each engine oil change.
How to Inspect the Engine Air
Cleaner/Filter
To inspect the engine air cleaner/
filter, remove the filter from the
vehicle and lightly shake the filter to release loose dust and dirt. If the
filter remains covered with dirt, a
new filter is required.
To inspect or replace the air cleaner/
filter:
2.0L L4 LTG Engine Shown, 2.5L
L4 LCV Engine, and 3.6L V6 LFX Engine Similar
1. Remove the four screws and lift the cover out of the assembly.
2. Inspect or replace the engine air cleaner/filter.
3. Lower the cover and secure with the four screws. See
Maintenance Schedule on
page 11-3 for replacement intervals.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. The air
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
{Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always
have the air cleaner/filter in place
when you are driving.

Black plate (24,1)Cadillac ATS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6014430) - 2014 - 2nd Edition - 8/23/13
10-24 Vehicle Care
since a leak means that sooner
or later the brakes will not
work well.
Do not top off the brake/clutch fluid.
Adding fluid does not correct a leak.
If fluid is added when the linings are
worn, there will be too much fluid
when new brake linings are
installed. Add or remove fluid, as
necessary, only when work is done
on the brake/clutch hydraulic
system.
{Warning
If too much brake fluid is added, it
can spill on the engine and burn,
if the engine is hot enough. You
or others could be burned, and
the vehicle could be damaged.
Add brake fluid only when work is
done on the brake/clutch
hydraulic system.
Checking Brake Fluid
The brake/clutch fluid can be
checked without taking off the cap
by looking at the brake/clutch fluid
reservoir.
The fluid level should be above
MIN. If it is not, have the brake/
clutch hydraulic system checked to
see if there is a leak.
After work is done on the brake/
clutch hydraulic system, make sure
the level is above MIN but not over
the MAX mark.
When the brake/clutch fluid falls to a
low level, the brake warning light
comes on. See Brake System
Warning Light on page 5-18.
What to Add
Use only new GM approved DOT 3
brake fluid from a sealed container.
See Recommended Fluids and
Lubricants on page 11-13. Always clean the brake/clutch fluid
reservoir cap and the area around
the cap before removing it. This
helps keep dirt from entering the
reservoir.
{Warning
With the wrong kind of fluid in the
brake/clutch hydraulic system, the
brakes might not work well. This
could cause a crash. Always use
the proper brake/clutch fluid.
{Caution
.Using the wrong fluid can
badly damage brake/clutch
hydraulic system parts. For
example, just a few drops of
mineral-based oil, such as
engine oil, in the brake
hydraulic system can damage
brake hydraulic system parts
so badly that they will have to
(Continued)

Black plate (10,1)Cadillac ATS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6014430) - 2014 - 2nd Edition - 8/23/13
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 have
access to tools and equipment
to inspect the belts and
recommend adjustment or
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 ATS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6014430) - 2014 - 2nd Edition - 8/23/13
INDEX i-1
A
Accessories andModifications . . . . . . . . . . . . . . . . . 10-3
Accessory Power . . . . . . . . . . . . . . 9-21
Active Emergency Braking System . . . . . . . . 1-19, 9-56
Adaptive Cruise Control . . . . . . . 9-40
Adaptive Forward
Lighting (AFL) . . . . . . . . . . . . . . . . . 6-5
Adaptive Forward Lighting (AFL) Light . . . . . . . . . . . . . . . . . . . 5-24
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . . 9-72
Additional Information OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-5
Adjustments
Lumbar, Front Seats . . . . . . . . . . . 3-4
Thigh Support . . . . . . . . . . . . . . . . . 3-4
Air Cleaner/Filter, Engine . . . . . 10-15
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . 8-10
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-9 Airbag System
Check . . . . . . . . . . . . . . . . . . . . . . . . 3-31
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . 3-24
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . 3-26
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-24
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . 3-24
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-23
Where Are the Airbags? . . . . . . 3-21
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . 3-30
Passenger Status Indicator . . . 5-15
Readiness Light . . . . . . . . . . . . . . 5-14
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . 3-30
System Check . . . . . . . . . . . . . . . . 3-19
Alarm Vehicle Security . . . . . . . . . . . . . . 2-16
Alert Side Blind Zone (SBZA) . . . . . . 9-58
All-Wheel Drive . . . . . . . . . 9-29, 10-26 AM-FM Radio . . . . . . . . . . . . . . . . . . . 7-8
Antenna
Multi-band . . . . . . . . . . . . . . . . . . . . 7-12
Antilock Brake System (ABS) . . . . . . . . . . . . . . . . 9-29
Warning Light . . . . . . . . . . . . . . . . . 5-20
Appearance Care
Exterior . . . . . . . . . . . . . . . . . . . . . 10-77
Interior . . . . . . . . . . . . . . . . . . . . . . 10-82
Armrest Storage . . . . . . . . . . . . . . . . 4-2
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . 9-53
Assistance Systems for Parking and Backing . . . . . . . . . 9-49
Audio Players . . . . . . . . . . . . . . . . . 7-12 CD . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
Audio System Backglass Antenna . . . . . . . . . . . 7-12
Radio Reception . . . . . . . . . . . . . . 7-11
Theft-Deterrent Feature . . . . . . . . 7-2
Automatic
Door Locks . . . . . . . . . . . . . . . . . . . 2-13
Headlamp System . . . . . . . . . . . . . 6-4
Transmission . . . . . . . . . . . . . . . . . 9-24
Transmission Fluid . . . . . . . . . 10-14

Black plate (2,1)Cadillac ATS Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
6014430) - 2014 - 2nd Edition - 8/23/13
i-2 INDEX
Automatic TransmissionManual Mode . . . . . . . . . . . . . . . . . 9-26
Shift Lock Control
Function Check . . . . . . . . . . . 10-27
Auxiliary Jack . . . . . . . . . . . . . . . . . . 7-19
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 10-25 Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Jump Starting . . . . . . . . . . . . . . . 10-72
Power Protection . . . . . . . . . . . . . . 6-8
Voltage and Charging Messages . . . . . . . . . . . . . . . . . . . 5-32
Blade Replacement, Wiper . . . 10-28
Bluetooth Overview . . . . . . . . . 7-20, 7-21, 7-26
Brake
System Warning Light . . . . . . . . 5-18
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 10-22 Antilock . . . . . . . . . . . . . . . . . . . . . . . 9-29
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 9-33
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-23
Parking . . . . . . . . . . . . . . . . . 9-30, 9-32
System Messages . . . . . . . . . . . . 5-32
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 9-3 Braking System
Active Emergency . . . . . . . . . . . . 1-19
Break-In, New Vehicle . . . . . . . . . 9-16
Bulb Replacement . . . . . . . . . . . . 10-31 Back-up Lamps . . . . . . . . . . . . . 10-30
Halogen Bulbs . . . . . . . . . . . . . . 10-29
Headlamp Aiming . . . . . . . . . . . 10-29
Headlamps . . . . . . . . . . . . . . . . . 10-29
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . 10-29
License Plate Lamps . . . . . . . 10-30
Buying New Tires . . . . . . . . . . . . . 10-56
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 5-5
California Fuel Requirements . . . . . . . . . . . 9-63
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 10-3
Warning . . . . . . . . . . . . . . . . . . . . . . 10-2
Canadian Vehicle Owners . . . . . . . . iii
Capacities and Specifications . . . . . . . . . . . . . . . . 12-2 Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 9-23
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
Winter Driving . . . . . . . . . . . . . . . . . 9-9
Card Reader SD . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . . 4-2
Cautions, Danger, and Warnings . . . . . . . . . . . . . . . . . . . . . . . . iii
CD Player . . . . . . . . . . . . . . . . . . . . . 7-12
Chains, Tire . . . . . . . . . . . . . . . . . . 10-62
Charging System Light . . . . . . . . 5-15
Check
Engine Light . . . . . . . . . . . . . . . . . . 5-16
Child Restraints
Infants and YoungChildren . . . . . . . . . . . . . . . . . . . . . 3-34
Lower Anchors and Tethers for Children . . . . . . . . . 3-40
Older Children . . . . . . . . . . . . . . . . 3-32
Securing . . . . . . . . . . . . . . . . 3-45, 3-48
Systems . . . . . . . . . . . . . . . . . . . . . . 3-37
Circuit Breakers . . . . . . . . . . . . . . 10-32