2019 CADILLAC CTS Owner's Manual

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12460273) - 2019 - CRC - 5/16/18
288 VEHICLE CARE
Hood
Trunk
Liftgate
Headlamp Aiming
Headlamp aim has been preset and
should need no further adjustment.
If the vehicle is damaged in a crash,
the headlamp aim may be affected.
If adjustment to the headlamps is
necessary, see your dealer.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12460273) - 2019 - CRC - 5/16/18
VEHICLE CARE 289
Bulb Replacement
For the proper type of replacement
bulbs, or any bulb changing procedure
not listed in this section, contact your
dealer.
Caution
Do not replace incandescent bulbs
with aftermarket LED replacement
bulbs. This can cause damage to
the vehicle electrical system.
Halogen Bulbs
{Warning
Halogen bulbs have pressurized gas
inside and can burst if you drop or
scratch the bulb. You or others
could be injured. Be sure to read
and follow the instructions on the
bulb package.
High Intensity Discharge
(HID) Lighting
{Warning
The High Intensity Discharge (HID)
lighting system operates at a very
high voltage. If you try to service
any of the system components, you
could be seriously injured. Have
your dealer or a qualified technician
service them.
After an HID headlamp bulb has been
replaced, the beam might be a slightly
different shade than it was originally.
This is normal.
LED Lighting
This vehicle has several LED lamps.
For replacement of any LED lighting
assembly, contact your dealer.
Back-Up Lamps
1. Back-Up Bulb Socket
2. Back-Up Lamp Assembly
To replace one of these bulbs: 1. Reach under the rear fascia and locate the back-up lamp
assembly.
2. Remove the bulb socket (1) by turning counterclockwise and
pulling straight out of the lamp
assembly (2).
3. Pull the bulb out of the socket.
4. Install the new bulb in the bulb socket.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12460273) - 2019 - CRC - 5/16/18
290 VEHICLE CARE
5. Install the bulb socket by turningclockwise.
License Plate Lamp
Lamp Assembly
Bulb Assembly
1. Bulb Socket
2. Bulb
3. Lamp Assembly
To replace one of these bulbs:
1. Push the lamp assembly (3) toward the center of the vehicle.
2. Pull the lamp assembly down to remove.
3. Turn the bulb socket (1) counterclockwise to remove it
from the lamp assembly (3).
4. Pull the bulb (2) straight out of the bulb socket (1).
5. Push the replacement bulb straight into the bulb socket and
turn the bulb socket clockwise to
install it into the lamp assembly.
6. Push the lamp assembly back into position until the release tab
locks into place.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12460273) - 2019 - CRC - 5/16/18
VEHICLE CARE 291
Electrical System
Electrical System Overload
The vehicle has fuses and circuit
breakers to protect against an
electrical system overload.
When the current electrical load is too
heavy, the circuit breaker opens and
closes, protecting the circuit until the
current load returns to normal or the
problem is fixed. This greatly reduces
the chance of circuit overload and fire
caused by electrical problems.
Fuses and circuit breakers protect
power devices in the vehicle.
Replace a bad fuse with a new one of
the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, the
same amperage fuse can be borrowed.
Choose some feature of the vehicle
that is not needed to use and replace
it as soon as possible.
Headlamp Wiring
An electrical overload may cause the
lamps to go on and off, or in some
cases to remain off. Have the
headlamp wiring checked right away if
the lamps go on and off or remain off.
Windshield Wipers
If the wiper motor overheats due to
heavy snow or ice, the windshield
wipers will stop. Wiper function is
available immediately after the wiper
switch is set to off, and back to on.
To protect the wiper motor from
overheating, the wipers may slow
down when the windshield is dry for a
long period of time. If a period of dry
operation, or little moisture, exceeds
10 minutes, the wipers may switch to
intermittent operation, and remain
there. When moisture is again
detected on the windshield, wiper
operation will return to the operator
selected speed.
Although the circuit is protected from
electrical overload, overload due to
heavy snow or ice may cause wiperlinkage damage. Always clear ice and
heavy snow from the windshield
before using the windshield wipers.
If the overload is caused by an
electrical problem and not snow or
ice, be sure to get it fixed.
Fuses and Circuit Breakers
The wiring circuits in the vehicle are
protected from short circuits by a
combination of fuses and circuit
breakers. This greatly reduces the
chance of damage caused by electrical
problems.
{Danger
Fuses and circuit breakers are
marked with their ampere rating.
Do not exceed the
specified amperage rating when
replacing fuses and circuit breakers.
Use of an oversized fuse or circuit
breaker can result in a vehicle fire.
You and others could be seriously
injured or killed.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12460273) - 2019 - CRC - 5/16/18
292 VEHICLE CARE
To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace a
bad fuse with a new one of the
identical size and rating.
Fuses of the same amperage can be
temporarily borrowed from another
fuse location, if a fuse goes out.
Replace the fuse as soon as possible.
Engine Compartment Fuse
Block
The underhood fuse block is on the
passenger side of the engine
compartment.
Lift the fuse block cover to access the
fuses.The vehicle may not be equipped with
all of the fuses and relays shown.
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the covers
on any electrical component.

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12460273) - 2019 - CRC - 5/16/18
VEHICLE CARE 293
FusesUsage
1 –
2 – Fuses
Usage
3 Passenger motorized seat belt Fuses
Usage
4 –
5 –
6 Driver power seat
7 –
9 –
10 –
11 –
12 –
13 Passenger power seat
14 –
15 –
16 –
17 Headlamp washer
18 –
19 Antilock brake system pump
20 Antilock brake system valve
21 –
22 Driver motorized seat belt

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12460273) - 2019 - CRC - 5/16/18
294 VEHICLE CARE
FusesUsage
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
39 O2 sensor/Emissions Fuses
Usage
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 –
56 Transmission control module Fuses
Usage
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
24 Wiper speed

Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12460273) - 2019 - CRC - 5/16/18
VEHICLE CARE 295
RelaysUsage
25 Engine control module
46 Rear washer
47 Front washer
54 Coolant pump
57 Low-beam headlamp relay
58 High-beam headlamp
59 Run/Crank
60 Starter 2
61 Vacuum pump
62 Starter 1
63 Air conditioning control
70 HornInstrument Panel Fuse
Block
The instrument panel fuse block is in
the end of the driver side of the
instrument panel.
To access the fuses, remove the end
panel by gently prying with a plastic
tool near each clip, beginning at the
point shown.
To install the end cover, insert the
tabs on the back of the cover into the
slots in the instrument panel at the
points shown. Align the clips with the
slots in the instrument panel, and
press the cover into place.
The vehicle may not be equipped with
all of the fuses and relays shown.