2017 CADILLAC ATS service

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
INSTRUMENTS AND CONTROLS 115
Caution
Modifications to the engine,
transmission, exhaust, intake,
or fuel system, or the use of
replacement tires that do not meet
the original tire specifications, can
cause this light to come on. This
could lead to costly repairs not
covered by the vehicle warranty.
This could also affect the vehicle’s
ability to pass an Emissions
Inspection/Maintenance test. See
Accessories and Modifications0232.
If the light is f lashing : A
malfunction has been detected that
could damage the emission control
system and increase vehicle
emissions. Diagnosis and service may
be required.
To help prevent damage, reduce
vehicle speed and avoid hard
accelerations and uphill grades.
If towing a trailer, reduce the amount
of cargo being hauled as soon as
possible. If the light continues to flash, find a
safe place to park. Turn the vehicle off
and wait at least 10 seconds before
restarting the engine. If the light is
still flashing, follow the previous
guidelines and see your dealer for
service as soon as possible.
If the light is on steady :
A
malfunction has been detected.
Diagnosis and service may be
required.
Check the following:
. For vehicles without the capless
fuel system, a loose or missing
fuel cap may cause the light to
come on. See Filling the Tank
0 227. A few driving trips with the
cap properly installed may turn
the light off.
. For vehicles with the capless fuel
system, if fuel has been added to
the vehicle using the capless
funnel adapter, make sure that it
has been removed. See “Filling the
Tank with a Portable Gas Can ”
under Filling the Tank 0227. The
diagnostic system can detect if the
adapter has been left installed in
the vehicle, allowing fuel to evaporate into the atmosphere.
A few driving trips with the
adapter removed may turn off the
light.
. Poor fuel quality can cause
inefficient engine operation and
poor driveability, which may go
away once the engine is warmed
up. If this occurs, change the fuel
brand. It may require at least one
full tank of the proper fuel to turn
the light off. See Fuel0226.
If the light remains on, see your
dealer.
Emissions Inspection and
Maintenance Programs
If the vehicle requires an Emissions
Inspection/Maintenance test, the test
equipment will likely connect to the
vehicle's Data Link Connector (DLC).

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
116 INSTRUMENTS AND CONTROLS
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 0230.
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 should come on briefly
when the engine is started. If it does
not come on then, have it fixed so it
will be ready to warn you 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.
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

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
INSTRUMENTS AND CONTROLS 117
another system. A message may also
display in the Driver Information
Center (DIC). SeeBrake System
Messages 0128.
If the light does not come on,
or remains flashing, see your dealer.
Service Electric Parking
Brake Light
This light should come on briefly
when starting the vehicle. If it does
not come on, have it fixed so it will be
ready to warn if there is a problem.
If this light stays on, there is a
problem with the Electric Parking
Brake system or another 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 the information for the Electric Parking Brake under
Parking Brake (Manual)
0195 or
Parking Brake (Electric) 0196. If a
message displays in the Driver
Information Center (DIC), see Brake
System Messages 0128.
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.
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.
See
Brake System Warning Light 0116
and Brake System Messages 0128.
Lane Keep Assist (LKA)
Light
If available, this light comes on briefly
while starting the vehicle.
If it does not come on, have the
vehicle serviced.
This light is green if LKA is available
to assist.

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
118 INSTRUMENTS AND CONTROLS
LKA may assist by gently turning the
steering wheel if the vehicle
approaches a detected lane marking
without using the turn signal in that
direction. The LKA light will turn
amber.
This light is amber and flashes as a
Lane Departure Warning (LDW) alert,
to indicate that the lane marking has
been crossed.
SeeLane Keep Assist (LKA) 0224.
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 0218.
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.
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.
See Traction Control/Electronic Stability
Control 0198.
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 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 0198.

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
INSTRUMENTS AND CONTROLS 119
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 Driver
Information Center (DIC) message
may display. Check the DIC messages
to determine which feature(s) is no
longer functioning and whether the
vehicle requires service. SeeRide
Control System Messages 0134.
If the light is on and flashing, the TCS
and/or the StabiliTrak system is
actively working. See
Traction Control/Electronic Stability
Control 0198.
Engine Coolant
Temperature Warning Light
This light comes on briefly while
starting the vehicle.
If it does not, have the vehicle
serviced by your dealer. If the system
is working normally the indicator light
goes off.
Caution
The engine coolant temperature
warning light indicates that the
vehicle has overheated. Driving with
this light on can damage the engine
and it may not be covered by the
vehicle warranty. See Engine
Overheating 0251. 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
0251.
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 0135. Stop as soon
as possible, and inflate the tires to the

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
120 INSTRUMENTS AND CONTROLS
pressure value shown on the Tire and
Loading Information label. SeeTire
Pressure 0273.
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 0275.
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
(Continued)
Caution (Continued)
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.
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
The security light should come on
briefly as the engine is started. If it
does not come on, have the vehicle

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
INSTRUMENTS AND CONTROLS 121
serviced by your dealer. If the system
is working normally, the indicator
light turns off.
If the light stays on and the engine
does not start, there could be a
problem with the theft-deterrent
system. SeeImmobilizer
Operation 041.
High-Beam On Light
This light comes on when the
high-beam headlamps are in use.
See Headlamp High/Low-Beam
Changer 0147.
IntelliBeam®Light
This light comes on when the
IntelliBeam system, if equipped, is
enabled.
See Exterior Lamp Controls 0145.
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. This light comes on solid when there
is a problem with the AFL system.
It flashes when the system is
switching between lighting modes. See
Adaptive Forward Lighting (AFL)
0148.
Lamps On Reminder
This light comes on when the exterior
lamps are in use. See Exterior Lamp
Controls 0145.
Cruise Control Light

Cadillac ATS/ATS-V Owner Manual (GMNA-Localizing-MidEast-10287885) -
2017 - crc - 6/16/16
128 INSTRUMENTS AND CONTROLS
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. See
Battery0255.
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 0254.
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 Parking Brake (Manual) 0195 or
Parking Brake (Electric) 0196.
RELEASE PARKING BRAKE
This message is displayed if the
Electric Parking Brake is on while the
vehicle is in motion. See Parking Brake
(Manual) 0195 orParking Brake
(Electric) 0196.
SERVICE BRAKE ASSIST
This message may be displayed when
there is a problem with the brake
boost assist system. When this
message is displayed, the brake boost
assist motor might be heard operating
and you might notice pulsation in the brake pedal. 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.
Cruise Control Messages
ADAPTIVE CRUISE SET TO XXX
This message displays when the
Adaptive Cruise Control (ACC) speed is
set. See
Adaptive Cruise Control 0207.
ADAPTIVE CRUISE TEMPORARILY
UNAVAILABLE
This message displays when
attempting to activate Adaptive Cruise
Control (ACC) when it is temporarily
unavailable. The ACC system does not
need service.
This can occur under the following
conditions:
.
The radar is not clean. Keep the
radar sensors free of mud, dirt,
snow, ice, and slush. Clean the