Page 321 of 496

Black plate (9,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Vehicle Care 10-9
A. Windshield Washer FluidReservoir. See Washer Fluid on
page 10‑25.
B. Engine Compartment Fuse
Block (CTS Coupe and Sedan)
on page 10‑40 orEngine
Compartment Fuse Block
(CTS V Coupe and Sedan) on
page 10‑44 orEngine
Compartment Fuse Block
(CTS Wagon) on page 10‑47 or
Engine Compartment Fuse
Block (CTS V Wagon) on
page 10‑51.
C. Remote Positive (+) Terminal. See Jump Starting on
page 10‑104.
D. Remote Negative (−) Terminal. See Jump Starting on
page 10‑104.
E. Engine Oil Fill Cap (Out of View). See Engine Oil on
page 10‑10.
F. Engine Oil Dipstick. See Engine
Oil on page 10‑10. G. Passenger Compartment Air
Filter. See Passenger
Compartment Air Filter on
page 8‑6.
H. Intercooler System Pressure Cap. See Cooling System on
page 10‑18.
I. Engine Cooling Fans (Out of View). See Cooling System on
page 10‑18.
J. Hydraulic Clutch Reservoir (If Equipped) (Not Shown). See
Hydraulic Clutch on page 10‑14.
K. Brake Master Cylinder Reservoir. See Brakes on
page 10‑26.
L. Engine Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10‑18.
M. Power Steering Fluid Reservoir (Under Engine Cover). See
Power Steering Fluid on
page 10‑24.
N. Engine Air Cleaner/Filter on
page 10‑15.Engine Cover
Engine Cover (CTS)
To remove:
1. Remove the oil fill cap (A).
2. Raise the right front corner of
the engine cover (B) to release it
from the ball stud.
3. Pull the engine cover (B) forward to slide the rear tabs (C) out from
under the retainers.
Page 322 of 496

Black plate (10,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
10-10 Vehicle Care
4. Lift and remove the enginecover.
5. Reverse Steps 1 through 4 to reinstall engine cover.
Engine Cover (CTS-V)
To remove:
The engine cover consists of two
pieces. Only the larger front piece
needs to be removed to access the
engine oil and power steering
fill caps.
1. Raise the front of the enginecover (A) to release it from the
ball studs (B).
2. Pull the engine cover forward until it is clear of the smaller
piece.
3. Lift and remove the engine cover.
4. Reverse Steps 1 through 3 to reinstall engine cover.Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.Always use engine oil approved
to the proper specification and of
the proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
.Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
.Change the engine oil at the
appropriate time. See Engine Oil
Life System on page 10‑12.
.Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Page 336 of 496

Black plate (24,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
10-24 Vehicle Care
If No Steam Is Coming from
the Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem may not be
too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
.Tows a trailer.
If the overheat warning is displayed
with no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the highest
fan speed. Open the windows as
necessary. 3. In heavy traffic, let the engine
idle in N (Neutral) while stopped.
If it is safe to do so, pull off the
road, shift to P (Park) or
N (Neutral) and let the
engine idle.
If the temperature overheat gauge
is no longer in the overheat zone
or an overheat warning no longer
displays, the vehicle can be driven.
Continue to drive the vehicle slow
for about 10 minutes. Keep a safe
vehicle distance from the car in front
of you. If the warning does not come
back on, continue to drive normally.
If the warning continues, pull over,
stop, and park the vehicle
right away.
If there is no sign of steam, idle
the engine for three minutes while
parked. If the warning is still
displayed, turn off the engine until it
cools down. Also, see “Overheated
Engine Protection Operating Mode”
next in this section.
Overheated Engine
Protection
Operating Mode
This operating mode allows the
vehicle to be driven to a safe place
in an emergency. Should a hot
engine condition exist, an overheat
protection mode which alternates
firing groups of cylinders helps
prevent engine damage. In this
mode, there is a loss in power
and engine performance. Driving
extended distances and/or towing a
trailer in the overheat protection
mode should be avoided.
Power Steering Fluid
See Engine Compartment Overview
on page 10‑6 for the location of the
power steering fluid reservoir.
Page 337 of 496

Black plate (25,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Vehicle Care 10-25
When to Check Power Steering
Fluid
It is not necessary to regularly
check power steering fluid unless
you suspect there is a leak in the
system or you hear an unusual
noise. A fluid loss in this system
could indicate a problem. Have the
system inspected and repaired.
How to Check Power Steering
Fluid
Notice:Extremely small amounts
of contamination can cause
steering system damage and
cause it to not work properly. Do
not allow contaminants to contact
the fluid side of the reservoir cap/
dipstick or from entering the
reservoir. To check the power steering fluid:
1. Turn the key off and let the
engine compartment cool down.
2. Wipe the cap and the top of the reservoir clean.
3. Unscrew the cap and wipe the dipstick with a clean rag.
4. Replace the cap and completely tighten it.
5. Remove the cap again and look at the fluid level on the dipstick.
The level should be between the
HOT and COLD marks. If necessary,
add only enough fluid to bring the
level between the marks.
What to Use
To determine what kind of fluid to
use, see Recommended Fluids and
Lubricants on page 11‑13. Always
use the proper fluid.
Washer Fluid
What to Use
When adding windshield washer
fluid to the vehicle, be sure to read
the manufacturer's instructions
before use. If you will be operating
your vehicle in an area where the
temperature may fall below freezing,
use a fluid that has sufficient
protection against freezing.
Page 355 of 496
Black plate (43,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Vehicle Care 10-43
Mini‐Fuses Usage60 Instrument Panel
Auxiliary Power
Outlet
61 Air Quality Sensor,
Inside Rear View
Mirror, Rear
Camera
62 Ignition
64 Steering Wheel
Illumination
65 Front Fog Lamps
(HID Only)
69 Body Control
Module 6, Body
Control Module 7
70 Emissions 1
71 Even Ignition Coils
72 Engine Control
Module
73 Emissions 2
74 Odd Ignition Coils Mini‐Fuses Usage
75 Transmission
Output Speed
Sensor, Brake
Vacuum Relay
76 Spare
77 Spare
78 Spare
79 Spare
80 Spare
81 Spare
J-Case Fuses Usage
6 Cooling Fan 2
7 Cooling Fan 1
8 Starter
9 Brake
Vacuum Pump
10 Antilock Brake
System Motor J-Case
Fuses Usage
13 Not Used
14 Electric Parking
Brake
15 Not Used
16 Not Used
17 Blower Motor
18 Rear Window
Defogger
37 Not Used
Relays Usage 1 Cooling Fan 2
2 Cooling Fan 1
3 Starter
4 Rear Window
Defogger
5 Instrument Panel
Auxiliary Power
Outlet
Page 358 of 496
Black plate (46,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
10-46 Vehicle Care
Mini‐Fuses Usage43 Left Daytime
Running
Lamps (HID)
46 Left High‐Beam
Headlamp
47 Right High‐Beam
Headlamp
50 Right Daytime
Running Lamp,
Windshield
Washer Pump
51 Airbag System
Ignition Switch
52 Engine Control
Module Ignition,
Transmission
Control Module
Ignition
54 Power Moding
(Immobilizer
Module, Ignition
Switch) Mini‐Fuses Usage
55 Intercooler Pump
56 Windshield Wipers
57 Right Low‐Beam
(HID Only)
58 Left Low‐Beam
(HID Only)
59 Right Daytime
Running Lamp
(HID Only)
60 Instrument Panel
Auxiliary Power
Outlet
61 Air Quality Sensor,
Inside Rear View
Mirror, Rear
Camera
62 Ignition
64 Steering Wheel
Illumination
65 Front Fog Lamps
(HID Only) Mini‐Fuses Usage
69 Body Control
Module 6, Body
Control Module 7
70 Emissions 1
71 Even Ignition Coils
72 Odd Ignition Coils
73 Emissions 2
74 Engine Control
Module
75 Not Used
76 Spare
77 Spare
78 Spare
79 Spare
80 Spare
81 Spare
Page 362 of 496
Black plate (50,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
10-50 Vehicle Care
Mini‐Fuses Usage60 Instrument Panel
Auxiliary Power
Outlet
61 Air Quality Sensor,
Inside Rear View
Mirror, Rear
Camera
62 Ignition
64 Steering Wheel
Illumination
65 Front Fog Lamps
(HID Only)
69 Body Control
Module 6, Body
Control Module 7
70 Emissions 1
71 Even Ignition Coils
72 Engine Control
Module
73 Emissions 2
74 Odd Ignition Coils Mini‐Fuses Usage
75 Transmission
Output Speed
Sensor, Brake
Vacuum Relay
76 Spare
77 Spare
78 Spare
79 Spare
80 Spare
81 Spare
J-Case Fuses Usage
6 Cooling Fan 2
7 Cooling Fan 1
8 Starter
9 Brake
Vacuum Pump
10 Antilock Brake
System Motor J-Case
Fuses Usage
13 Not Used
14 Electric Parking
Brake
15 Not Used
16 Not Used
17 Blower Motor
18 Transmission
Control Module
Battery
37 Trailer (Export Only)
Relays Usage 1 Cooling Fan 2
2 Cooling Fan 1
3 Starter
4 Rear Window
Defogger
5 Instrument Panel
Auxiliary Power
Outlet
Page 365 of 496

Black plate (53,1)Cadillac CTS/CTS-V Owner Manual (Include Mex) - 2012
Vehicle Care 10-53
Mini‐Fuses Usage43 Left Daytime
Running
Lamp (HID)
46 Left High‐Beam
Headlamp
47 Right High‐Beam
Headlamp
50 Right Daytime
Running Lamp
51 Airbag System
Ignition Switch
52 Engine Control
Module Ignition,
Transmission
Control Module
Ignition
54 Power Moding
(Immobilizer
Module, Ignition
Switch)
55 Intercooler Pump
56 Windshield Wipers Mini‐Fuses Usage
57 Right Low‐Beam
(HID Only)
58 Left Low‐Beam
(HID Only)
59 Right Daytime
Running Lamp
(HID Only)
60 Instrument Panel
Auxiliary Power
Outlet
61 Air Quality Sensor,
Inside Rear View
Mirror, Rear
Camera
62 Ignition
64 Steering Wheel
Illumination
65 Front Fog Lamps
(HID Only)
69 Body Control
Module 6, Body
Control Module 7 Mini‐Fuses Usage
70 Emissions 1
71 Even Ignition Coils
72 Odd Ignition Coils
73 Emissions 2
74 Engine Control
Module
75 Not Used
76 Spare
77 Spare
78 Spare
79 Spare
80 Spare
81 Spare
J-Case Fuses Usage
6 Cooling Fan 2
7 Cooling Fan 1
8 Starter