2013 CADILLAC CTS maintenance

Black plate (20,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
5-20 Instruments and Controls
Malfunctions often are indicated by
the system before any problem is
apparent. Being aware of the light
can prevent more serious damage
to the vehicle. This system also
assists the service technician in
correctly diagnosing any
malfunction.
Notice:If the vehicle is
continually driven with this light
on, the emission controls might
not work as well, the vehicle fuel
economy might not be as good,
and the engine might not run as
smoothly. This could lead to
costly repairs that might not be
covered by the vehicle warranty.
Notice: Modifications made to the
engine, transmission, exhaust,
intake, or fuel system of the
vehicle or the replacement of the
original tires with other than
those of the same Tire
Performance Criteria (TPC) can
affect the vehicle's emission
controls and can cause this light
to come on. Modifications to
these systems could lead to costly repairs not covered by the
vehicle warranty. This could also
result in a failure to pass a
required Emission Inspection/
Maintenance test. See
Accessories and Modifications on
page 10‑3.
This light comes on during a
malfunction in one of two ways:
Light Flashing:
A misfire condition
has been detected. A misfire
increases vehicle emissions and
could damage the emission control
system on the vehicle. Diagnosis
and service might be required.
To prevent more serious damage to
the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
.If towing a trailer, reduce the
amount of cargo being hauled as
soon as it is possible. If the light continues to flash, find a
safe place to stop and park the
vehicle. Turn the vehicle off, wait at
least 10 seconds, and restart the
engine. If the light is still flashing,
follow the previous steps and see
your dealer for service as soon as
possible.
Light On Steady:
An emission
control system malfunction has
been detected on the vehicle.
Diagnosis and service might be
required.
The following may correct an
emission control system
malfunction:
.Check that the fuel cap is fully
installed. See Filling the Tank on
page 9‑49. The diagnostic
system can determine if the fuel
cap has been left off or
improperly installed. A loose or
missing fuel cap allows fuel to
evaporate into the atmosphere.
A few driving trips with the cap
properly installed should turn the
light off.

Black plate (21,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
Instruments and Controls 5-21
.Check that good quality fuel is
used. Poor fuel quality causes
the engine not to run as
efficiently as designed and may
cause stalling after start-up,
stalling when the vehicle is
changed into gear, misfiring,
hesitation on acceleration,
or stumbling on acceleration.
These conditions might go away
once the engine is warmed up.
If one or more of these conditions
occurs, change the fuel brand used.
It may require at least one full tank
of the proper fuel to turn the light off.
See Recommended Fuel on
page 9‑47.
If none of the above have made the
light turn off, your dealer can check
the vehicle. The dealer has the
proper test equipment and
diagnostic tools to fix any
mechanical or electrical problems
that might have developed.Emissions Inspection and
Maintenance Programs
Depending on where you live, your
vehicle may be required to
participate in an emission control
system inspection and maintenance
program. For the inspection, the
emission system test equipment will
likely connect to the vehicle's Data
Link Connector (DLC).
The DLC is under the instrument
panel to the next to the steering
wheel. See your dealer if assistance
is needed.
The vehicle may not pass
inspection if:
.The malfunction indicator lamp is
on with the engine running, or if
the light does not come on when the ignition is turned to ON/RUN
while the engine is off. See your
dealer for assistance in verifying
proper operation of the
malfunction indicator lamp.
.The OBD II (On-Board
Diagnostics) system determines
that critical emission control
systems have not been
completely diagnosed. The
vehicle would be considered not
ready for inspection. This can
happen if the 12-volt battery has
recently been replaced or run
down. The diagnostic system is
designed to evaluate critical
emission control systems during
normal driving. This can take
several days of routine driving.
If this has been done and the
vehicle still does not pass the
inspection for lack of OBD II
system readiness, your dealer
can prepare the vehicle for
inspection.

Black plate (25,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
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. SeeTire Messages on
page 5‑43. 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 10‑66. 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 10‑69.
Engine Oil Pressure Light
Notice: Lack of proper engine oil
maintenance can damage the
engine. Driving with the engine
oil low can also damage the
engine. 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.
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 (29,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
Instruments and Controls 5-29
To reset the timer to zero, press and
hold the set/reset button.
Inst (Instantaneous) Economy
Displays the current fuel economy in
either liters per 100 kilometers(L/100 km) or miles per
gallon (mpg). This number changes
frequently as driving conditions
change. It cannot be reset.
AVG (Average) Speed
Displays the average speed of the
vehicle in either kilometers per
hour (km/h) or miles per hour (mph).
This calculation is based on the
various vehicle speeds recorded
since the last reset of this display.
Press the set/reset button to reset
to zero.
Speedometer
Displays a digital speedometer in
the DIC. The speed displays in
either kilometers per hour (km/h) or
miles per hour (mph). To change the
units from English to metric, see
“Units” later in this section. Blank Display
This display shows no information.
Vehicle Information Display
Menu Items
T(Vehicle Information):
Press
to display the following menu items:
Oil Life Remaining
If the vehicle has this display, it
shows the estimated oil life
remaining. If you see 99% Oil Life
Remaining on the display, that
means that 99% of the current oil
life remains.
When the oil life is depleted, the
Change Engine Oil Soon message
displays. Change the oil as soon as
possible. Additional maintenance is
also recommended in the
Maintenance Schedule in this
manual. See Maintenance Schedule
on page 11‑3 andEngine Oil on
page 10‑9.
The Oil Life must be reset after
each oil change. Avoid accidental
resetting of the Oil Life system. It cannot be reset accurately until
the next oil change. To reset the
engine oil life system, See
Engine
Oil Life System on page 10‑11. The
system is reset when 100%
displays.
Units
Select to display English or metric
units of measure. Press the set/
reset button to select when units is
displayed.
Parking Assist
If the vehicle has the Ultrasonic
Rear Parking Assist (URPA) system,
this display allows the system to be
turned on or off. Once in this
display, press the set/reset button to
select between On or Off. The
URPA system automatically turns
back on after each vehicle start.
When the URPA system is turned
off and the vehicle is shifted out of
P (Park), the DIC displays the
PARKING ASSIST OFF message as
a reminder that the system has

Black plate (35,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
Instruments and Controls 5-35
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 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 10‑21 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 10‑22 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 10‑9.
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 10‑11.
ENGINE OIL LOW ADD OIL
On some vehicles, this message
displays if the oil level in the vehicle
is low. Check the oil level before
filling to the recommended level. You may need to let the vehicle cool
or warm up and cycle the ignition to
be sure this message clears. If the
oil is not low and this message
continues to be displayed, take the
vehicle to your dealer for service.
This message clears itself after
10 seconds, until the next ignition
cycle. See
Engine Oil on page 10‑9.
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 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 10‑9 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 cluster.

Black plate (1,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
Climate Controls 8-1
Climate Controls
Climate Control Systems
Dual Automatic Climate ControlSystem . . . . . . . . . . . . . . . . . . . . . . 8-1
Air Vents
Air Vents . . . . . . . . . . . . . . . . . . . . . . 8-6
Maintenance
Passenger Compartment AirFilter . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Climate Control Systems
Dual Automatic Climate Control System
The heating, cooling, and ventilation for the vehicle can be controlled with
this system.
1. Driver and Passenger Displays
2. Fan
3. Power
4. AUTO (Automatic Operation)
5. PASS (Passenger Climate
Control) 6. Defrost
7. Air Delivery Mode
8. Temperature and Heated/
Ventilated Seat
9. Air Conditioning
10. Recirculation

Black plate (6,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
8-6 Climate Controls
Air Vents
Use the air outlets 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 under the hood below the
windshield wiper arm and the
screen on the passenger side of the
vehicle. SeeEngine Compartment
Overview on page 10‑5 for more
information on location.

Black plate (7,1)Cadillac CTS/CTS-V Owner Manual - 2013 - crc2 - 8/22/12
Climate Controls 8-7
To replace the passenger
compartment air filter:
1. Turn the ignition to ON/RUN withthe engine off.
2. Turn on the windshield wipers and turn the ignition off again
when the wipers are straight up
on the windshield.
This allows access to the leaf
screen. The passenger
compartment air filter is under
the screen.
3. Open the hood to access the engine compartment. See Hood
on page 10‑4 for more
information.
4. Remove the three screws that hold the screen in place and lift
off the screen by lifting and
sliding it toward the center of the
vehicle.
5. Pull out on the two tabs on each end of the filter cover.
6. Lift the filter cover off by pulling it straight up. 7. Remove the old filter and insert
a new one.
See Maintenance Replacement
Parts on page 11‑15 for the
correct part number for the filter.
8. Reverse Steps 1 through 6 to reinstall the cover.