2017 CADILLAC CTS check engine light

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-10293089) -
2017 - crc - 6/22/16
INSTRUMENTS AND CONTROLS 129
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.
SeeTire Messages 0147. Stop as soon
as possible, and inflate the tires to the
pressure value shown on the Tire and
Loading Information label. See Tire
Pressure 0290.
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 0293.
Engine Oil Pressure Light
Caution
Lack of proper engine oil
maintenance can damage the
engine. Driving with the engine oil
low can also damage the engine.
(Continued)
Caution (Continued)
The repairs would not be covered
by the vehicle warranty. Check the
oil level as soon as possible. Add oil
if required, but if the oil level is
within the operating range and the
oil pressure is still low, have the
vehicle serviced. Always follow the
maintenance schedule for changing
engine oil.
This 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.
Low Fuel Warning Light
This light is near the fuel gauge and
comes on briefly when the ignition is
turned on as a check to show it is
working. For vehicles with a
reconfigurable cluster, this light is in
the display area and may not come on
when the ignition is turned on.
It also comes on when the fuel tank is
low on fuel. The light turns off when
fuel is added. If it does not, have the
vehicle serviced.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-10293089) -
2017 - crc - 6/22/16
140 INSTRUMENTS AND CONTROLS
Engine Cooling System
Messages
A/C OFF ENGINE COOLANT HOT
This message displays when the
engine coolant becomes hotter than
the normal operating temperature. 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. The vehicle
can continue to be driven.
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
This message displays and a chime
sounds when the engine coolant
temperature is too hot. The engine
coolant temperature warning light will
also be on. Stop and allow the vehicle
to idle until it cools down.
ENGINE OVERHEATED —TURN
VEHICLE OFF
This message displays and a
continuous chime sounds if the
engine cooling system reaches unsafe
temperatures for operation. The
engine coolant temperature warning
light will flash. Stop and turn off the
vehicle as soon as it is safe to do so to
avoid severe damage. This message
clears when the engine has cooled to a
safe operating temperature.
Engine Oil Messages
CHANGE ENGINE OIL SOON
This message displays when the
engine oil needs to be changed. When
you change the engine oil, be sure to
reset the oil life system. See Engine Oil
Life System 0259, Driver Information
Center (DIC) 0132, Engine Oil 0257,
and Maintenance Schedule 0324.
ENGINE OIL HOT, IDLE ENGINE
This message displays when the
engine oil temperature is too hot. Stop
and allow the vehicle to idle until it
cools down.
ENGINE OIL LOW —ADD OIL
On some vehicles, this message
displays when the engine oil level may
be too low. Check the oil level before
filling to the recommended level.
If the oil is not low and this message
remains on, take the vehicle to your
dealer for service. See Engine
Oil 0257.
OIL PRESSURE LOW —STOP
ENGINE
This message displays if low oil
pressure levels occur. Stop the vehicle
as soon as safely possible and do not
operate it until the cause of the low
oil pressure has been corrected. Check
the oil as soon as possible and have
the vehicle serviced by your dealer.
Engine Power Messages
ENGINE POWER IS REDUCED
This message displays when the
vehicle's engine power is reduced.
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

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-10293089) -
2017 - crc - 6/22/16
206 DRIVING AND OPERATING
climbing or descending hills, to stay in
gear longer, or to downshift for more
power or engine braking.
The transmission will only allow you
to shift into gears appropriate for the
vehicle speed and engine revolutions
per minute (rpm). The transmission
will not automatically shift to the next
lower gear if the engine rpm is too
high, nor to the next higher gear when
the maximum engine rpm is reached.
If shifting is prevented for any reason,
a SHIFT DENIED message will be
displayed in the instrument cluster.
SeeTransmission Messages 0147.
When accelerating the vehicle from a
stop in snowy and icy conditions, it is
suggested to shift into second gear.
A higher gear allows the vehicle to
gain more traction on slippery
surfaces.Drive Systems
All-Wheel Drive
Vehicles with this feature always send
engine power to all four wheels. It is
fully automatic, and adjusts itself as
needed for road conditions.
Brakes
Antilock Brake
System (ABS)
This vehicle has an Antilock Brake
System (ABS), an advanced electronic
braking system that helps prevent a
braking skid.
When the vehicle begins to drive
away, ABS checks itself. A momentary
motor or clicking noise may be heard
while this test is going on, and it may
even be noticed that the brake pedal
moves a little. This is normal.
If there is a problem with ABS, this
warning light stays on. See Antilock
Brake System (ABS) Warning
Light 0126.
If driving safely on a wet road and it
becomes necessary to slam on the
brakes and continue braking to avoid

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-10293089) -
2017 - crc - 6/22/16
DRIVING AND OPERATING 207
a sudden obstacle, a computer senses
the wheels are slowing down. If one of
the wheels is about to stop rolling, the
computer will separately work the
brakes at each wheel.
ABS can change the brake pressure to
each wheel, as required, faster than
any driver could. This can help you
steer around the obstacle while
braking hard.
As the brakes are applied, the
computer keeps receiving updates on
wheel speed and controls braking
pressure accordingly.
Remember: ABS does not change the
time needed to get a foot up to the
brake pedal or always decrease
stopping distance. If you get too close
to the vehicle in front of you, there
will not be enough time to apply the
brakes if that vehicle 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 may hear the ABS pump or
motor operating and feel the brake
pedal pulsate. 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.
Electric Parking Brake
The vehicle has an Electric Parking
Brake (EPB). The switch for the EPB is
on the instrument panel, to the left of
the steering wheel. The EPB can
always be activated, even if the
ignition is off. To prevent draining the
battery, avoid repeated cycles of the
EPB system when the engine is not
running.
The system has a red parking brake
status light and an amber parking
brake warning light. SeeParking Brake
Light 0125 and Service Electric Parking
Brake Light 0126. There are also
parking brake-related Driver
Information Center (DIC) messages.
See Brake System Messages 0138. 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.
EPB Apply
To apply the EPB:
1. Be sure the vehicle is at a complete stop.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-10293089) -
2017 - crc - 6/22/16
246 DRIVING AND OPERATING
Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector (DLC) is
used for vehicle service and
Emission Inspection/Maintenance
testing. SeeMalfunction Indicator
Lamp (Check Engine Light) 0123.
A device connected to the DLC —
such as an aftermarket fleet or
driver-behavior tracking device —
may interfere with vehicle systems.
This could affect vehicle operation
and cause a crash. Such devices
may also access information stored
in the vehicle’s systems.
Caution
Some electrical equipment can
damage the vehicle or cause
components to not work and would
not be covered by the vehicle
warranty. Always check with your
dealer before adding electrical
equipment.
Add-on equipment can drain the
vehicle's 12-volt battery, even if the
vehicle is not operating.
The vehicle has an airbag system.
Before attempting to add anything
electrical to the vehicle, see Servicing
the Airbag-Equipped Vehicle 081 and
Adding Equipment to the
Airbag-Equipped Vehicle 081.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-10293089) -
2017 - crc - 6/22/16
VEHICLE CARE 247
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 248
Accessories andModifications . . . . . . . . . . . . . . . . . . . 248
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 249
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 250
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 257
Engine Oil Life System . . . . . . . . . . . 259
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
Engine Air Cleaner/Filter . . . . . . . . . 261
Cooling System . . . . . . . . . . . . . . . . . . . 263
Engine Coolant . . . . . . . . . . . . . . . . . . . 264
Engine Overheating . . . . . . . . . . . . . . 267
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 269
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 270
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
All-Wheel Drive . . . . . . . . . . . . . . . . . . 272
Starter Switch Check . . . . . . . . . . . . . 273
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 274
Wiper Blade Replacement . . . . . . . 274
Windshield Replacement . . . . . . . . 275
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . . . . . 275
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . 275
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . 275
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . . . . . 276
LED Lighting . . . . . . . . . . . . . . . . . . . . . 276
Back-Up Lamps . . . . . . . . . . . . . . . . . . . 276
License Plate Lamp . . . . . . . . . . . . . . 277
Replacement Bulbs . . . . . . . . . . . . . . . 277
Electrical System
Electrical System Overload . . . . . . 278
Fuses and Circuit Breakers . . . . . . 278
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Instrument Panel Fuse Block . . . . 282
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
All-Season Tires . . . . . . . . . . . . . . . . . . 288
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 288
Run-Flat Tires . . . . . . . . . . . . . . . . . . . . 288 Low-Profile Tires . . . . . . . . . . . . . . . . . 289
Summer Tires . . . . . . . . . . . . . . . . . . . . 289
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 290
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . . . . . . 291
Tire Pressure Monitor System . . . 292
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 293
Tire Inspection . . . . . . . . . . . . . . . . . . . 296
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 296
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297
Buying New Tires . . . . . . . . . . . . . . . . 298
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Wheel Replacement . . . . . . . . . . . . . . 300
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 301
If a Tire Goes Flat . . . . . . . . . . . . . . . . 302
Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 303
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . 309
Jump Starting
Jump Starting . . . . . . . . . . . . . . . . . . . . . 310
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . 312
Recreational Vehicle Towing . . . . 313

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-10293089) -
2017 - crc - 6/22/16
VEHICLE CARE 261
The vehicle is not equipped with a
transmission fluid level dipstick.
There is a special procedure for
checking and changing the
transmission fluid. Because this
procedure is difficult, this should be
done at the dealer. Contact your dealer
for additional information.
Change the fluid and filter at the
intervals listed inMaintenance
Schedule 0324, and be sure to use the
fluid listed in Recommended Fluids and
Lubricants 0331.
Engine Air Cleaner/Filter
The engine air cleaner/filter is in the
engine compartment on the driver
side of the vehicle. See Engine
Compartment Overview 0250.
When to Inspect the Engine Air
Cleaner/Filter
For intervals on changing and
inspecting the engine air cleaner/filter,
see Maintenance Schedule 0324.
How to Inspect the Engine Air
Cleaner/Filter
Do not start the engine or have the
engine running with the engine air
cleaner/filter housing open. Before
removing the engine air cleaner/filter,
make sure that the engine air cleaner/
filter housing and nearby components
are free of dirt and debris. Remove the
engine air cleaner/filter. Lightly tap
and shake the engine air cleaner/filter
(away from the vehicle), to release
loose dust and dirt. Inspect the engine
air cleaner/filter for damage, and
replace if damaged. Do not clean the
engine air cleaner/filter or
components with water or
compressed air. To inspect or replace the air cleaner/
filter:
2.0L L4 Engine (LTG) Shown, 3.6L
V6 Engine (LGX) Similar
1. Remove the screws on top of the air cleaner/filter cover.
2. Lift the air cleaner/filter cover away from the air cleaner/filter
housing.
3. Pull out the air cleaner/filter.
4. Inspect or replace the air cleaner/filter.
5. Reverse Steps 1–3 to reinstall the air cleaner/filter cover.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-MidEast-10293089) -
2017 - crc - 6/22/16
270 VEHICLE CARE
Caution
Continuing to drive with worn-out
brake pads could result in costly
brake repair.
Some driving conditions or climates
can cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean
something is wrong with the brakes.
If equipped with high performance
brake linings, there could be an
increased build-up of brake dust as
well as minor noises as compared to
standard brake linings.
Properly torqued wheel nuts are
necessary to help prevent brake
pulsation. When tires are rotated,
inspect brake pads for wear and
evenly tighten wheel nuts in the
proper sequence to torque
specifications. See Capacities and
Specifications 0336.
Brake pads should be replaced as
complete sets.
Brake Pedal Travel
See your dealer if the brake pedal does
not return to normal height, or if
there is a rapid increase in pedal
travel. This could be a sign that brake
service may be required.
Replacing Brake System Parts
Always replace brake system parts
with new, approved replacement parts.
If this is not done, the brakes may not
work properly. The braking
performance expected can change in
many other ways if the wrong
replacement brake parts are installed
or parts are improperly installed.
Cold Weather Brake Operation
(CTS-V Model)
High performance brake components
may bind and clunk when moving the
vehicle. This may be noticeable after
parking when the brakes have been
wet, such as when driving in the rain
or after a car wash. This is normal for
brakes with high friction pads and
does not affect the operation of the
brakes. Apply the brakes several times
until the binding or clunking stops. Drive the vehicle and apply the brakes
several times if it is washed before
long-term storage.
Brake Fluid
The brake master cylinder reservoir is
filled with GM approved DOT 3 brake
fluid as indicated on the reservoir cap.
See
Engine Compartment Overview
0 250 for the location of the reservoir.
Checking Brake Fluid
With the vehicle in P (Park) on a level
surface, the brake fluid level should be
between the minimum and maximum
marks on the brake fluid reservoir.
There are only two reasons why the
brake fluid level in the reservoir may
go down:
. Normal brake lining wear. When
new linings are installed, the fluid
level goes back up.