2018 CADILLAC CTS brake light

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
232 DRIVING AND OPERATING
is maneuvering the vehicle into a
previously detected space. The APA
system does not need service.
APA will instruct the vehicle to stop
once a large enough space is found.
Follow the displayed instructions.
When instructed to drive in reverse,
shift to R (Reverse) to engage
automatic steering. The steering wheel
will briefly vibrate as a reminder to
remove hands from the steering
wheel. Check surroundings and
continue braking or accelerating as
needed, and be prepared to stop to
avoid vehicles, pedestrians, or objects.
If the vehicle exceeds 10 km/h
(6 mph), APA is automatically
disengaged and automatic steering
will turn off. A progress arrow displaysthe status of the parking maneuver.
Depending on the space size,
additional maneuvers may be
required, and there will be additional
instructions. When changing gears,
allow the automatic steering to
complete before continuing the
parking maneuver. Upon successful
completion of a maneuver, APA will
beep and display a PARKING
COMPLETE message. Place the vehicle
in P (Park).
APA may automatically disengage if:
.
The steering wheel is used by the
driver.
. The maximum allowed speed is
exceeded.
. There is a failure with the APA
system.
. Electronic stability control or
antilock brakes are activated.
. A high priority vehicle message is
displayed in the DIC.
To cancel APA, press
Oagain. When the System Does Not Seem to
Work Properly
The APA system may require a short
period of driving along curves to
calibrate.
Assistance Systems for
Driving
If equipped, when driving the vehicle
in a forward gear, Forward Collision
Alert (FCA), Lane Departure Warning
(LDW), Lane Keep Assist (LKA), Side
Blind Zone Alert (SBZA), Lane Change
Alert (LCA), and/or Forward
Automatic Braking (FAB) can help to
avoid a crash or reduce crash damage.
Forward Collision Alert
(FCA) System
If equipped, the FCA system may help
to avoid or reduce the harm caused by
front-end crashes. When approaching
a vehicle ahead too quickly, FCA
provides a flashing red alert on the
windshield and rapidly beeps or pulses
the Safety Alert Seat. FCA also lights
an amber visual alert if following
another vehicle much too closely.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
236 DRIVING AND OPERATING
FAB may slow the vehicle to a
complete stop to try to avoid a
potential crash. If this happens, FAB
may engage the Electric Parking Brake
(EPB) to hold the vehicle at a stop. To
release automatic braking, release the
EPB or firmly press the accelerator
pedal.
{Warning
FAB may automatically brake the
vehicle suddenly in situations
where it is unexpected and
undesired. It could respond to a
turning vehicle ahead, guardrails,
signs, and other non-moving
objects. To override FAB, firmly
press the accelerator pedal, if it is
safe to do so.
Intelligent Brake Assist (IBA)
IBA may activate when the brake
pedal is applied quickly by providing a
boost to braking based on the speed
of approach and distance to a vehicle
ahead.Minor brake pedal pulsations or pedal
movement during this time is normal
and the brake pedal should continue
to be applied as needed. IBA will
automatically disengage only when
the brake pedal is released.
{Warning
IBA may increase vehicle braking in
situations when it may not be
necessary. You could block the flow
of traffic. If this occurs, take your
foot off the brake pedal and then
apply the brakes as needed.
FAB and IBA can be disabled through
vehicle personalization. See “Collision/
Detection Systems” underVehicle
Personalization 0144.
{Warning
Using FAB or IBA while towing a
trailer could cause you to lose
control of the vehicle and crash.
Turn the system to Off when
towing a trailer.
Side Blind Zone
Alert (SBZA)
If equipped, the SBZA system is a
lane-changing aid that assists drivers
with avoiding crashes that occur with
moving vehicles in the side blind zone
(or spot) areas. When the vehicle is in
a forward gear, the left or right side
mirror display will light up if a moving
vehicle is detected in that blind zone.
If the turn signal is activated and a
vehicle is also detected on the same
side, the display will flash as an extra
warning not to change lanes. Since
this system is part of the Lane Change
Alert (LCA) system, read the entire
LCA section before using this feature.
Lane Change Alert (LCA)
If equipped, the LCA system is a
lane-changing aid that assists drivers
with avoiding lane change crashes
that occur with moving vehicles in the
side blind zone (or spot) areas or with
vehicles rapidly approaching these
areas from behind. The LCA warning

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
242 DRIVING AND OPERATING
Without Head-Up Display
When a detected vehicle is braking
extremely hard, rapid beeps or seat
pulses may also occur.
To enable or disable this feature, see
“Connected Vehicle Braking Alert ”
under Vehicle Personalization 0144.
V2V Disabled Vehicle Ahead
When the vehicle is traveling above
20 km/h (13 mph), V2V may detect
when a V2V-equipped vehicle ahead
has a deployed airbag. When the
vehicle is traveling above 60 km/h
(38 mph), V2V may detect when a
V2V-equipped vehicle ahead has
warning flashers active and is moving
slowly or has stopped. Under these
disabled vehicle conditions, V2V may
display the DIC message HAZARD
LIGHTS AHEAD and the estimated
distance to the vehicle. A chime or two seat pulses may also
occur.
TRAFFIC INFORMATION OFF
This message displays when the V2V
Disabled Vehicle Ahead feature has
been turned off.
To enable or disable this feature, see
“Traffic and Roadside Information
”
under Vehicle Personalization 0144.
V2V Slippery Road Ahead
When the vehicle is traveling above
32 km/h (20 mph), V2V may detect
when a V2V-equipped vehicle ahead
has a StabiliTrak, Traction Control,
or Antilock Brake System (ABS) event.
This could indicate that the road
ahead is slippery or has low traction.
Under these conditions, V2V may
display a DIC message.
TRAFFIC INFORMATION OFF
This message displays when the V2V
Slippery Road Ahead feature has been
turned off.
To enable or disable this feature, see
“Traffic and Roadside Information ”
under Vehicle Personalization 0144.
Fuel
GM recommends the use of TOP
TIER®detergent gasoline to keep the
engine cleaner and reduce engine
deposits. See www.toptiergas.com for a
list of TOP TIER detergent gasoline
marketers and applicable countries.
Do not use any fuel labeled E85 or
FlexFuel. Do not use gasoline with
ethanol levels greater than 15% by
volume.
If the vehicle has an LGX 3.6L
V6 engine, use regular unleaded
gasoline meeting ASTM specification
D4814 with a posted octane rating of

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
DRIVING AND OPERATING 251
certain threshold. Trailer brake
requirements vary from state to state.
Be sure to read and follow the
instructions for the trailer brakes so
they are installed, adjusted, and
maintained properly.
Because the vehicle has antilock
brakes, do not tap into the vehicle's
brake system. If this is done, both
brake systems will not work well or
at all
Towing Equipment (V6
Twin Turbo)
The vehicle is neither designed nor
intended to tow a trailer.
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) 0128.
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 086 and
Adding Equipment to the
Airbag-Equipped Vehicle 087.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
252 VEHICLE CARE
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 253
California Proposition65 Warning . . . . . . . . . . . . . . . . . . . . . 253
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . 254
Accessories and Modifications . . . . . . . . . . . . . . . . . . . 254
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 254
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 256
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 263
Engine Oil Life System . . . . . . . . . . . 265
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266
Engine Air Cleaner/Filter . . . . . . . . . 267
Cooling System . . . . . . . . . . . . . . . . . . . 269
Engine Overheating . . . . . . . . . . . . . . 274
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 275
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 276
Battery - North America . . . . . . . . . 277
All-Wheel Drive . . . . . . . . . . . . . . . . . . 279 Starter Switch Check . . . . . . . . . . . . . 279
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 280
Wiper Blade Replacement . . . . . . . 280
Windshield Replacement . . . . . . . . 281
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . 281
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . . . . . 282
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . 283
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . 283
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . . . . . 283
LED Lighting . . . . . . . . . . . . . . . . . . . . . 283
Back-Up Lamps . . . . . . . . . . . . . . . . . . . 283
License Plate Lamp . . . . . . . . . . . . . . 284
Electrical System
Electrical System Overload . . . . . . 285
Fuses and Circuit Breakers . . . . . . 285
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Instrument Panel Fuse Block . . . . 289
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
All-Season Tires . . . . . . . . . . . . . . . . . . 295
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 295
Run-Flat Tires . . . . . . . . . . . . . . . . . . . . 295
Low-Profile Tires . . . . . . . . . . . . . . . . . 296
Summer Tires . . . . . . . . . . . . . . . . . . . . 296
Tire Sidewall Labeling . . . . . . . . . . . 297
Tire Designations . . . . . . . . . . . . . . . . . 298
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . . . . . 299
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 301
Tire Pressure for High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . 302
Tire Pressure Monitor System . . . 303
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 304
Tire Inspection . . . . . . . . . . . . . . . . . . . 307
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 307
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308
Buying New Tires . . . . . . . . . . . . . . . . 309
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Uniform Tire Quality Grading . . . 311
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Wheel Replacement . . . . . . . . . . . . . . 313
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 313
If a Tire Goes Flat . . . . . . . . . . . . . . . . 314

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
276 VEHICLE CARE
heard all the time when the vehicle is
moving, except when applying the
brake pedal firmly.
{Warning
The brake wear warning sound
means that soon the brakes will not
work well. That could lead to a
crash. When the brake wear
warning sound is heard, have the
vehicle serviced.
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 0353.
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

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
VEHICLE CARE 277
The brake master cylinder reservoir is
filled with GM approved DOT 3 brake
fluid as indicated on the reservoir cap.
SeeEngine Compartment Overview
0 256 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.
. A fluid leak in the brake hydraulic
system. Have the brake hydraulic
system fixed. With a leak, the
brakes will not work well.
Always clean the brake fluid reservoir
cap and the area around the cap
before removing it.
Do not top off the brake 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 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 hydraulic system.
When the brake fluid falls to a low
level, the brake warning light comes
on. See Brake System Warning Light
0 129.
Brake fluid absorbs water over time
which degrades the effectiveness of
the brake fluid. Replace brake fluid at
the specified intervals to prevent
increased stopping distance. See
Maintenance Schedule 0339. What to Add
Use only GM approved DOT 3 brake
fluid from a clean, sealed container.
See
Recommended Fluids and
Lubricants 0348.{Warning
The wrong or contaminated brake
fluid could result in damage to the
brake system. This could result in
the loss of braking leading to a
possible injury. Always use the
proper GM approved brake fluid.
Caution
If brake fluid is spilled on the
vehicle's painted surfaces, the paint
finish can be damaged. Immediately
wash off any painted surface.
Battery - North America
The original equipment battery is
maintenance free. Do not remove the
cap and do not add fluid.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
11349156) - 2018 - CRC - 9/29/17
288 VEHICLE CARE
FusesUsage
22 Driver motorized seat belt
26 –
27 –/Heated seat 2
28 –/Reverse lock out
29 Adaptive forward lighting, Automatic
headlamp leveling/
Pedestrian protection
30 –
31 Passenger window switch
32 –
33 Sunroof
34 Front wiper
35 Steering column lock
36 Rear bussed electrical center/Ignition
37 –/Malfunction
Indicator Lamp/
Ignition
38 Aeroshutter Fuses
Usage
39 O2 sensor/Emissions
40 Ignition coil even/O2 sensor
41 Ignition coil odd
42 Engine control module
43 –
44 –
45 Washer
48 Instrument panel/ Body/Ignition
49 Fuel system control module/Ignition
50 Heated steering wheel
51 Engine control module/Ignition
52 Transmission control module/Ignition
53 Coolant pump
55 – Fuses
Usage
56 Transmission control module
64 Adaptive headlamp leveling
65 Left HID headlamp
66 Right HID headlamp
67 Left/Right high-beam headlamp
68 Headlamp leveling motor
69 Horn
71 Cooling fan
72 Starter 2
73 Brake vacuum pump
74 Starter 1
75 Air conditioning clutch
76 –
Relays Usage
8 Headlamp washer
23 Wiper control