
Black plate (7,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Lighting 6-7
Interior Lighting
Instrument Panel
Illumination Control
The instrument panel brightness
knob is located on the instrument
panel next to the steering column.
D(Instrument Panel
Brightness): Turn the knob
clockwise or counterclockwise to
brighten or dim the lights. Turn the
knob completely clockwise to turn
on the interior lamps.
Reading Lamps
The reading lamps are located on
the overhead console. These lamps
come on automatically when any
door is opened.
For manual operation, press the
button next to each lamp to turn it
on or off.
If the reading lamps are left on, they
automatically shut off 10 minutes
after the ignition has been
turned off.
Lighting Features
Entry Lighting
The headlamps, taillamps, license
plate lamps, back‐up lamps, dome
lamps, and most of the interior lights
turn on briefly when the Remote
Keyless Entry (RKE)
Kis pressed,
or when the door handle is pulled on
a keyless access vehicle. See
Ignition Positions (Key Access) on
page 9‑16 orIgnition Positions
(Keyless Access) on page 9‑18.
After about 30 seconds the exterior
lamps turn off, then the dome and
remaining interior lights dim to off.
Entry lighting can be disabled
manually by changing the ignition
out of the OFF position, or by
pressing the Remote Keyless Entry
(RKE)
Qbutton.
This feature can be changed. See
Vehicle Personalization on
page 5‑46.

Black plate (8,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
6-8 Lighting
Exit Lighting
The headlamps, taillamps, parking
lamps, back‐up lamps, and license
plate lamps come on at night, or in
areas with limited lighting, when the
key is removed from the ignition.
The dome lamps also come on
when the key is removed from the
ignition. The exterior lights and
dome lamps remain on after the
door is closed for a set amount of
time, then automatically turn off.
For vehicles with keyless access,
the exterior lights and dome lamps
automatically turn on when a door is
opened after the ignition is turned
off. SeeIgnition Positions (Key
Access) on page 9‑16 orIgnition
Positions (Keyless Access) on
page 9‑18.
The exterior lights turn off
immediately by turning the
exterior lamps control off.
This feature can be changed.
See Vehicle Personalization on
page 5‑46.
Parade Dimming
This feature does not let the
instrument panel backlight dim
during daylight hours while the key
is in the ignition and the headlamps
are on. Parade dimming
automatically works with the light
sensor, located on top of the
dashboard. If it is dark enough
outside and the parking lamps are
on, the backlight on the instrument
panel can be adjusted by turning the
instrument panel brightness knob
clockwise or counterclockwise to
brighten or dim the lighting. See
Instrument Panel Illumination
Control on page 6‑7.
Battery Load
Management
The vehicle has Electric Power
Management (EPM) that estimates
the battery's temperature and state
of charge. It then adjusts the voltage
for best performance and extended
life of the battery. When the battery's state of charge
is low, the voltage is raised slightly
to quickly bring the charge back up.
When the state of charge is high,
the voltage is lowered slightly to
prevent overcharging. If the vehicle
has a voltmeter gauge or a voltage
display on the Driver Information
Center (DIC), you may see the
voltage move up or down. This is
normal. If there is a problem, an
alert will be displayed.
The battery can be discharged at
idle if the electrical loads are very
high. This is true for all vehicles.
This is because the generator
(alternator) may not be spinning fast
enough at idle to produce all the
power that is needed for very high
electrical loads.
A high electrical load occurs when
several of the following are on, such
as: headlamps, high beams, fog
lamps, rear window defogger,
climate control fan at high speed,
heated seats, engine cooling fans,
trailer loads, and loads plugged into
accessory power outlets.

Black plate (12,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
9-12 Driving and Operating
Two labels on the vehicle show
how much weight it may
properly carry, the Tire and
Loading Information label and
the Certification label.
{WARNING
Do not load the vehicle any
heavier than the Gross
Vehicle Weight Rating
(GVWR), or either the
maximum front or rear Gross
Axle Weight Rating (GAWR).
This can cause systems to
break and change the way the
vehicle handles. This could
cause loss of control and a
crash. Overloading can also
shorten the life of the vehicle. Tire and Loading Information
Label
Label Example
A vehicle-specific Tire and
Loading Information label is
attached to the vehicle's center
pillar (B-pillar). With the driver
door open, you will find the label
attached near the door lock
post. The Tire and Loading
Information label shows the
number of occupant seating positions (A), and the maximum
vehicle capacity weight (B) in
kilograms and pounds.
The Tire and Loading
Information label also shows the
tire size of the original
equipment tires (C) and the
recommended cold tire inflation
pressures (D). For more
information on tires and inflation
see
Tires on page 10‑63 and
Tire Pressure on page 10‑70.
There is also important loading
information on the Certification
label. It tells you the Gross
Vehicle Weight Rating (GVWR)
and the Gross Axle Weight
Rating (GAWR) for the front and
rear axle. See “Certification
Label” later in this section.

Black plate (18,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
9-18 Driving and Operating
C (ON/RUN):This position is for
driving. It is the position the ignition
switch returns to after the engine
starts, and the key is released. This
position can also be used for
service and diagnostics, and to
verify the proper operation of the
malfunction indicator lamp as may
be required for emission inspection
purposes.
To shift the transmission out of
P (Park), the ignition key has to be
in ACC/ACCESSORY or ON/RUN.
The battery could be drained if the
key is left in the ACC/ACCESSORY
or ON/RUN position with the engine
off. The vehicle might not start if the
battery is allowed to drain for an
extended period of time.
D (START): This position starts the
engine. When the engine starts,
release the key. The ignition switch
returns to ON/RUN for driving.
A warning tone will sound when the
driver door is opened, the ignition is
in ACC/ACCESSORY or LOCK/
OFF, and the key is in the ignition.Key Lock Release
Vehicles with an automatic
transmission are equipped with an
electronic key lock release system.
The key lock release is designed to
prevent ignition key removal unless
the shift lever is in P (Park).
The key lock release is always
functional except in the case of an
uncharged or low voltage (less than
9‐volt) battery. If the vehicle has an
uncharged battery or a battery with low voltage, try charging or jump
starting the battery. See
Jump
Starting on page 10‑104.
If charging or jump starting the
battery does not work, locate the
hole below the ignition lock. Insert a
flat bladed tool or another key from
the key chain into the opening.
When the lever can be felt, actuate
the lever away from the driver, and
remove the key from the ignition.
Ignition Positions
(Keyless Access)
The ignition control knob can be
turned to four different positions.
To shift out of P (Park), the ignition
must be in ON/RUN or ACC/
ACCESSORY and the regular brake
pedal must be applied.

Black plate (22,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
9-22 Driving and Operating
as you hold the key in START
for up to a maximum of
15 seconds. Wait at least
15 seconds between each try, to
allow the cranking motor to cool
down. When the engine starts,
let go of the key and accelerator.
If the vehicle starts briefly but
then stops again, do the same
thing. This clears the extra
gasoline from the engine. Do not
race the engine immediately
after starting it. Operate the
engine and transmission gently
until the oil warms up and
lubricates all moving parts.
Notice: The engine is designed to
work with the electronics in the
vehicle. If you add electrical parts
or accessories, you could change
the way the engine operates.
Before adding electrical
equipment, check with your
dealer. If you do not, the engine
might not perform properly. Any
resulting damage would not be
covered by the vehicle warranty.Retained Accessory
Power (RAP)
These vehicle accessories can be
used for up to 10 minutes after the
engine is turned off:
.Audio System
.Power Windows
.Sunroof (if equipped)
Power to the audio system will work
up to 10 minutes or until the driver
door is opened. Power to the
windows or sunroof will work up to
10 minutes or until any door is
opened. For an additional
10 minutes of operation, close all
the doors and turn the key to ON/
RUN and then back to LOCK/OFF.
Engine Coolant Heater
Vehicles with the engine coolant
heater can use this option in cold
weather conditions at or below
−18°C (0°F) for easier starting and
better fuel economy during engine
warm-up. Plug in the coolant heater at least four hours before starting
your vehicle. An internal thermostat
in the plug-end of the cord may exist
which will prevent engine coolant
heater operation at temperatures
above
−18°C (0°F).
To Use the Engine Coolant
Heater
1. Turn off the engine.
2. Open the hood and unwrap the
electrical cord. The cord is
located near the driver side strut
tower.
Remove the plastic cap to
access the plug.
3. Plug it into a normal, grounded 110-volt AC outlet.
{WARNING
Plugging the cord into an
ungrounded outlet could cause an
electrical shock. Also, the wrong
kind of extension cord could
(Continued)

Black plate (53,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Driving and Operating 9-53
Some gasolines that are
not reformulated for low
emissions can contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT); ask the attendant
where you buy gasoline whether the
fuel contains MMT. We recommend
against the use of such gasolines.
Fuels containing MMT can reduce
spark plug life and affect emission
control system performance. The
malfunction indicator lamp might
turn on. If this occurs, return to your
dealer for service.Filling the Tank
{WARNING
Fuel vapor burns violently and a
fuel fire can cause bad injuries.
To help avoid injuries to you and
others, read and follow all the
instructions on the fuel pump
island. Turn off the engine when
refueling. Do not smoke near fuel
or when refueling the vehicle. Do
not use cellular phones. Keep
sparks, flames, and smoking
materials away from fuel. Do not
leave the fuel pump unattended
when refueling the vehicle. This is
against the law in some places.
Do not re-enter the vehicle while
pumping fuel. Keep children away
from the fuel pump; never let
children pump fuel.
The cap is behind a locking fuel
door on the passenger side of the
vehicle.
To open the fuel door, push the
rearward center edge in and release
and it will open.
To remove the tethered fuel cap,
turn it slowly counterclockwise.
While refueling, hang the tethered
fuel cap from the hook on the
fuel door.

Black plate (54,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
10-54 Vehicle Care
J-CaseFuses Usage
9 Not Used
10 Antilock Brake
System Motor
13 Not Used
14 Electric Parking
Brake
15 Not Used
16 Not Used
17 Blower Motor
18 Rear Window
Defogger
37 Magnetic Ride/
Suspension Control
Relays Usage 1 Cooling Fan 2
2 Cooling Fan 1
3 Starter Relays Usage
4 Rear Window
Defogger
5 Instrument Panel
Auxiliary Power
Outlet
12 Horn
20 Headlamp Washer
(HID Only)
21 Cooling Fan
(Series/Parallel)
32 Air Conditioning
Compressor Clutch
39 Not Used
42 Right Daytime
Running Lamp
44 Left Daytime
Running Lamp (HID)
45 Front Fog Lamps
(HID Only)
48 High‐Beam
Headlamps Relays Usage
49 Low‐Beam
Headlamps (HID)
53 Not Used
63 Main Ignition
66 Windshield Wipers
67 Powertrain
68 Windshield Wipers
High Speed
Rear Compartment Fuse
Block (CTS Coupe and
Sedan)
The rear compartment fuse block is
located on top of the battery, on the
right side of the trunk. The battery
access door must be removed to
access the fuse block.
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.

Black plate (55,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Vehicle Care 10-55
RelaysUsage
5 Stop Lamps
(Export Only)
6 Door Lock
7 Door Unlock Relays
Usage
8 Fuel Door Unlock
(Export Only)
9 Right Position Lamp
(Export Only)
10 Console/Auxiliary
Power Outlet Relays
Usage
11 Sedan Trunk
Release/Coupe
Rear Fog
(Export Only)
12 Side Marker Lamps
13 Left Position Lamps
Mini‐Fuses Usage 14 Right Position Lamp
15 Left Position Lamp
16 Door Lock
17 Console/Auxiliary
Power Outlet
18 Rear Fog/Export
Body Control
Module
(Export Only)
19 Trunk Release
20 Easy Entry Seats
(Coupe Only)
21 Sunroof