2016 CADILLAC XTS service

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
Instruments and Controls 121
The DLC is under the instrument
panel to the left of the steering
wheel. Connecting devices that are
not used to perform an Emissions
Inspection/Maintenance test or to
service the vehicle may affect
vehicle operation SeeAdd-On
Electrical Equipment 0226. See
your dealer if assistance is needed.
The vehicle may not pass
inspection if:
. The light is on when the engine
is running.
. The light does not come on
when the ignition is in Service
Only Mode.
. Critical emission control systems
have not been completely
diagnosed. If this happens, the
vehicle would not be ready for
inspection and might require
several days of routine driving before the system is ready for
inspection. This can happen if
the 12-volt battery has recently
been replaced or run down, or if
the vehicle has been recently
serviced.
See your dealer if the vehicle will
not pass or cannot be made ready
for the test.
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 problem with the braking
system. Have the brake system
inspected right away.
This light comes on briefly when the
vehicle is turned on. If it does not
come on then, have it fixed so it will
be ready to warn if there is a
problem.
If the light comes on and stays on,
there is a base brake problem.
{Warning
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.

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
122 Instruments and Controls
Electric Parking Brake
Light
The parking 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 or another system.
A message may also display in the
Driver Information Center (DIC).
SeeBrake System Messages
0 135.
If the light does not come on,
or remains flashing, see your dealer.
Service Electric Parking
Brake Light
On some vehicles the service
electric parking brake light should
come on briefly when the vehicle is
in ON/RUN. If it does not come on,
have it fixed so it will be ready to
warn if there is a problem. For
vehicles with the reconfigurable
cluster, this light may not come on
when the vehicle is in ON/RUN.
If this light stays 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 as
soon as possible. See Electric
Parking Brake 0190. If a message
displays in the Driver Information
Center (DIC), see Brake System
Messages 0135.
Antilock Brake System
(ABS) Warning Light
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 light comes on while driving,
stop as soon as it is safely possible
and turn off the vehicle. Then start
the engine again to reset the
system. If the ABS light stays on,
or comes on again while driving, the
vehicle needs service. A chime may
also sound when the light comes on
steady.
If the ABS light is the only light on,
the vehicle has regular brakes, but
the antilock brakes are not
functioning.

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
Instruments and Controls 123
If both the ABS and the brake
system warning light are on, the
vehicle's antilock brakes are not
functioning and there is a problem
with the regular brakes. See your
dealer for service.
SeeBrake System Warning Light
0 121 andBrake System Messages
0 135.
Lane Departure Warning
(LDW) Light
For some vehicles with the Lane
Departure Warning (LDW) system,
this light comes on briefly while
starting the vehicle. If it does not
come on, have the vehicle serviced.
For vehicles with the uplevel cluster,
this light may not come on when
starting the vehicle. This light is green if LDW is on and
ready to operate.
This light changes to amber and
flashes to indicate that the lane
marking has been crossed without
using a turn signal in that direction.
See
Lane Departure Warning (LDW)
0 216.
Vehicle Ahead Indicator
If equipped, this indicator will
display green when a vehicle is
detected ahead and amber when
you are following a vehicle ahead
much too closely.
See Forward Collision Alert (FCA)
System 0211.
Traction Off Light
This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your
dealer. If the system is working
normally, the indicator light then
turns off. For vehicles with a
reconfigurable cluster, this light is in
the display area and it may not
come on when the ignition is
turned on.
The traction off light comes on when
the Traction Control System (TCS)
has been turned off by pressing and
releasing the TCS/StabiliTrak
button.
This light and the StabiliTrak OFF
light come on when StabiliTrak is
turned off.
If the TCS is off, wheel spin is not
limited. Adjust driving accordingly.

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
124 Instruments and Controls
SeeTraction Control/Electronic
Stability Control 0192.
StabiliTrak®OFF Light
This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your
dealer.
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 StabiliTrak and TCS are off,
the system does not assist in
controlling the vehicle. Turn on the
TCS and the StabiliTrak systems
and the warning light turns off.
See Traction Control/Electronic
Stability Control 0192.
Traction Control System
(TCS)/StabiliTrak®Light
This light comes on briefly when the
engine is started.
If the light does not come on, have
the vehicle serviced by your 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 light is on and flashing, the
TCS and/or the StabiliTrak system
is actively working.
See Traction Control/Electronic
Stability Control 0192.
Engine Coolant
Temperature Warning
Light
On some vehicles this light comes
on briefly while starting the vehicle.
If it does not, have the vehicle
serviced by the dealer. If the system
is working normally the indicator
light goes off. For vehicles with the
reconfigurable cluster, this light may
not come on when starting the
vehicle.
Caution
The engine coolant temperature
warning light indicates that the
vehicle has overheated. Driving
with this light on can damage the
(Continued)

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
Instruments and Controls 125
Caution (Continued)
engine and it may not be covered
by the vehicle warranty. See
Engine Overheating0243.
The engine coolant temperature
warning light comes on when the
engine has overheated.
If this happens pull over and turn off
the engine as soon as possible. See
Engine Overheating 0243.
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. See
Tire Messages 0143.
Stop as soon as possible, and
inflate the tires to the pressure value
shown on the Tire and Loading
Information label. See Tire Pressure
0 263.
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 0266.
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.
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.

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
126 Instruments and Controls
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.
Security Light
On some vehicles the immobilizer
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 system is working
normally, the indicator light turns off.
For vehicles with the reconfigurable
cluster, this light may not come on
when the engine is started.
If the light stays on and the engine
does not start, there could be a
problem with the theft-deterrent
system. SeeImmobilizer Operation
0 40.
High-Beam On Light
This light comes on when the
high-beam headlamps are in use.
See Headlamp High/Low-Beam
Changer 0154.
IntelliBeam®Light
This light comes on when the
IntelliBeam system, if equipped, is
enabled.
See Exterior Lamp Controls 0152.

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
Instruments and Controls 127
Adaptive Forward
Lighting (AFL) Light
This light should come on briefly as
the vehicle is started. If it does not
come on, have the vehicle serviced
by your dealer. For vehicles with a
reconfigurable cluster, this light is in
the display area and may not come
on when the ignition is turned on.
This light comes on solid when
there is a problem with the AFL
system. It flashes when the system
is switching between lighting
modes. SeeAdaptive Forward
Lighting (AFL) 0155.
Lamps On Reminder
This light comes on when the
exterior lamps are in use. See
Exterior Lamp Controls 0152.
Cruise Control Light
The cruise control light is white
when the cruise control is on and
ready, and turns green when the
cruise control is set and active.
See Cruise Control 0195.
Adaptive Cruise Control Light
This light is white when the Adaptive
Cruise Control (ACC, if equipped) is
on and ready, and turns green when
the ACC is set and active. See
Adaptive Cruise Control 0198.
Door Ajar Light

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-9369806) - 2016 -
crc - 6/24/15
Instruments and Controls 135
Battery Voltage and
Charging Messages
BATTERY SAVER ACTIVE
This message displays when the
vehicle has detected that the battery
voltage is dropping beyond a
reasonable point. The battery saver
system starts reducing features of
the vehicle that may be noticed. At
the point that features are disabled,
this message displays. Turn off
unnecessary accessories to allow
the battery to recharge.
LOW BATTERY
This message is displayed when the
battery voltage is low. SeeBattery
0 248.
SERVICE BATTERY
CHARGING SYSTEM
This message is displayed when
there is a fault in the battery
charging system. Take the vehicle to
your dealer for service.
TRANSPORT MODE ON
This message is displayed when the
vehicle is in transport mode. Some
features can be disabled while in
this mode, including Remote
Keyless Entry (RKE), remote start,
and the vehicle alarm system. Take
the vehicle to your dealer for service
to turn transport mode off.
Brake System Messages
BRAKE FLUID LOW
This message is displayed when the
brake fluid level is low. See Brake
Fluid 0247.
BRAKES OVERHEATED
This message is displayed when the
brakes are becoming overheated.
This may be seen when driving on
hills. Shift to a lower gear.
STEP ON BRAKE TO
RELEASE PARK BRAKE
This message is displayed if you
attempt to release the Electric
Parking Brake without the brake
pedal applied. See Electric Parking
Brake 0190.
RELEASE PARKING BRAKE
This message is displayed if the
Electric Parking Brake is on while
the vehicle is in motion. See Electric
Parking Brake 0190.
SERVICE BRAKE ASSIST
This message may be displayed
when there is a problem with the
brake boost assist system. The
brake boost assist motor may be
heard and brake pedal pulsation
may be felt. This is normal under
these conditions. Take the vehicle to
your dealer for service.
SERVICE PARKING BRAKE
This message is displayed when
there is a problem with the parking
brake. Take the vehicle to your
dealer for service.