Page 319 of 496

Black plate (1,1)Cadillac CTS/CTS-V Owner Manual - 2011
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-3
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-3
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-4
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 10-4
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-5
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-6
Engine Cover . . . . . . . . . . . . . . . 10-10
Engine Oil . . . . . . . . . . . . . . . . . . 10-11
Engine Oil Life System . . . . . 10-14
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-15
Manual Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-15 Hydraulic Clutch . . . . . . . . . . . . 10-15
Engine Air Cleaner/Filter . . . . 10-16
Cooling System . . . . . . . . . . . . 10-19
Engine Coolant . . . . . . . . . . . . . 10-19
Engine Overheating . . . . . . . . 10-24
Overheated Engine
Protection
Operating Mode . . . . . . . . . . . 10-25
Power Steering Fluid . . . . . . . 10-26
Washer Fluid . . . . . . . . . . . . . . . 10-26
Brakes . . . . . . . . . . . . . . . . . . . . . 10-27
Brake Fluid . . . . . . . . . . . . . . . . . 10-28
Battery . . . . . . . . . . . . . . . . . . . . . 10-30
All-Wheel Drive . . . . . . . . . . . . . 10-31
Rear Axle . . . . . . . . . . . . . . . . . . 10-31
Starter Switch Check . . . . . . . 10-32
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-33
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . 10-33
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-33
Wiper Blade Replacement . . . . . . . . . . . . . . 10-34
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-35
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-38
Halogen Bulbs . . . . . . . . . . . . . . 10-38
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . 10-38
Fog Lamps . . . . . . . . . . . . . . . . . 10-38
License Plate Lamp (Coupe
and Sedan) . . . . . . . . . . . . . . . 10-39
License Plate Lamp (Wagon) . . . . . . . . . . . . . . . . . . 10-39
Replacement Bulbs . . . . . . . . . 10-40
Electrical System
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-40
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-42
Engine Compartment Fuse
Block (CTS Coupe and
Sedan) . . . . . . . . . . . . . . . . . . . . 10-42
Engine Compartment Fuse Block (CTS V Coupe and
Sedan) . . . . . . . . . . . . . . . . . . . . 10-46
Engine Compartment Fuse Block (CTS Wagon) . . . . . . . 10-50
Engine Compartment Fuse Block (CTS V Wagon) . . . . . 10-54
Page 325 of 496

Black plate (7,1)Cadillac CTS/CTS-V Owner Manual - 2011
Vehicle Care 10-7
A. Windshield Washer FluidReservoir. See Washer Fluidon
page 10‑26.
B. Engine Compartment Fuse
Block (CTS Coupe and Sedan)
on page 10‑42orEngine
Compartment Fuse Block (CTS
V Coupe and Sedan)
on
page 10‑46or Engine
Compartment Fuse Block (CTS
Wagon)
on page 10‑50or
Engine Compartment Fuse
Block (CTS V Wagon)
on
page 10‑54.
C. Remote Positive (+) Terminal. See Jump Starting
on
page 10‑112. D. Remote Negative (−) Terminal.
See Jump Starting
on
page 10‑112.
E. Passenger Compartment Air Filter. See Passenger
Compartment Air Filter
on
page 8‑6.
F. Engine Cooling Fan (Out of View). See Cooling System
on
page 10‑19.
G. Power Steering Fluid Reservoir (Under Engine Cover). See
Power Steering Fluid
on
page 10‑26.
H. Engine Oil Fill Cap. See Engine
Oil on page 10‑11. I. Engine Oil Dipstick (Out of
View). See Engine Oil
on
page 10‑11.
J. Hydraulic Clutch Reservoir (If Equipped) (Not Shown). See
Hydraulic Clutch on page 10‑15.
K. Brake Master Cylinder Reservoir (Out of View). See
Brakes on page 10‑27.
L. Engine Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10‑19.
M. Engine Air Cleaner/Filter
on
page 10‑16.
Page 327 of 496

Black plate (9,1)Cadillac CTS/CTS-V Owner Manual - 2011
Vehicle Care 10-9
A. Windshield Washer FluidReservoir. See Washer Fluidon
page 10‑26.
B. Engine Compartment Fuse
Block (CTS Coupe and Sedan)
on page 10‑42orEngine
Compartment Fuse Block (CTS
V Coupe and Sedan)
on
page 10‑46or Engine
Compartment Fuse Block (CTS
Wagon)
on page 10‑50or
Engine Compartment Fuse
Block (CTS V Wagon)
on
page 10‑54.
C. Remote Positive (+) Terminal. See Jump Starting
on
page 10‑112. D. Remote Negative (−) Terminal.
See Jump Starting
on
page 10‑112.
E. Engine Oil Fill Cap (Out of View). See Engine Oil
on
page 10‑11.
F. Engine Oil Dipstick. See Engine
Oil on page 10‑11.
G. Passenger Compartment Air Filter. See Passenger
Compartment Air Filter
on
page 8‑6.
H. Intercooler System Pressure Cap. See Cooling System
on
page 10‑19.
I. Engine Cooling Fans (Out of View). See Cooling System
on
page 10‑19. J. Hydraulic Clutch Reservoir
(If Equipped) (Not Shown). See
Hydraulic Clutch on page 10‑15.
K. Brake Master Cylinder Reservoir. See Brakes
on
page 10‑27.
L. Engine Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10‑19.
M. Power Steering Fluid Reservoir (Under Engine Cover). See
Power Steering Fluid
on
page 10‑26.
N. Engine Air Cleaner/Filter
on
page 10‑16.
Page 362 of 496
Black plate (44,1)Cadillac CTS/CTS-V Owner Manual - 2011
10-44 Vehicle Care
Mini‐Fuses Usage40 Right Low‐Beam
Headlamp
(Domestic
Non‐HID Only)
41 Air Conditioning
Compressor Clutch
43 Low‐Beam Daytime
Running Lamps
(non‐HID), Left
Daytime Running
Lamps (HID), Left
Trailer Turn Signal
(Export Only)
46 Left High‐Beam
Headlamp
47 Right High‐Beam
Headlamp
50 Right Daytime
Running Lamp,
Windshield
Washer Pump Mini‐Fuses Usage
51 Airbag System
Ignition Switch
52 Engine Control
Module Ignition,
Transmission
Control Module
Ignition
54 Power Moding
(Immobilizer
Module, Ignition
Switch)
55 Not Used
56 Windshield Wipers
57 Right Low‐Beam
(HID Only)
58 Daytime Running
Lamps (non‐HID),
Left Low‐Beam
(HID Only) Mini‐Fuses Usage
59 Right Daytime
Running Lamp (HID
Only), Right Trailer
Turn Signal
(Export 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)
Page 364 of 496
Black plate (46,1)Cadillac CTS/CTS-V Owner Manual - 2011
10-46 Vehicle Care
RelaysUsage
21 Cooling Fan (Series/
Parallel)
32 Air Conditioning
Compressor Clutch
39 Windshield
Washer Pump
42 Right Daytime
Running Lamp,
Trailer Turn Signal
44 Low‐Beam
(non‐HID), Left
Daytime Running
Lamps (HID), Left
Trailer Turn Signal
(Export Only) Relays
Usage
45 Front Fog Lamps
(HID Only)
48 High‐Beam
Headlamps
49 Daytime Running
Lamps (Non‐HID),
Low‐Beam
Headlamps (HID)
53 Not Used
63 Main Ignition
66 Windshield Wipers
67 Powertrain
68 Windshield Wipers
High SpeedEngine Compartment
Fuse Block (CTS V Coupe
and Sedan)
The underhood fuse block is located
on the passenger side of the engine
compartment.
Lift the fuse block cover to access
the fuses.
Notice:
Spilling liquid on any
electrical components on the
vehicle may damage it. Always
keep the covers on any electrical
component.
Page 365 of 496
Black plate (47,1)Cadillac CTS/CTS-V Owner Manual - 2011
Vehicle Care 10-47
Mini‐Fuses Usage11 Not Used
19 Antilock Braking
System (ABS)
22 Display
23 Sunroof
24 Body Control
Module 1 Mini‐Fuses Usage
25 Automatic Forward
Lighting System
(HID Only)
26 Body Control
Module 5
27 Body Control
Module 4 Mini‐Fuses Usage
28 Navigation Motor
29 Not Used
30 Transmission
Control Module
Battery
31 Horn
33 Not Used
34 Pedestrian
Protection System
(Export Only)
35 Body Control
Module 3
36 Body Control
Module 2
38 Headlamp Washer
(HID Only)
40 Not Used
41 Air Conditioning
Compressor Clutch
Page 367 of 496
Black plate (49,1)Cadillac CTS/CTS-V Owner Manual - 2011
Vehicle Care 10-49
J-CaseFuses Usage
6 Cooling Fan 2
7 Cooling Fan 1
8 Starter
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
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 Windshield
Washer Pump Relays Usage
42 Right Daytime
Running Lamp
44 Left Daytime
Running Lamp (HID)
45 Front Fog Lamps
(HID Only)
48 High‐Beam
Headlamps
49 Low‐Beam
Headlamps (HID)
53 Not Used
63 Main Ignition
66 Windshield Wipers
67 Powertrain
68 Windshield Wipers
High Speed
Page 369 of 496

Black plate (51,1)Cadillac CTS/CTS-V Owner Manual - 2011
Vehicle Care 10-51
Mini‐Fuses Usage28 Navigation Motor
29 All-Wheel Drive
30 Transmission
Control Module
Battery
31 Horn
33 Left Low‐Beam
Headlamp
(Domestic
Non‐HID Only)
34 Pedestrian
Protection System
(Export Only)
35 Body Control
Module 3
36 Body Control
Module 2
38 Headlamp Washer
(HID Only) Mini‐Fuses Usage
40 Right Low‐Beam
Headlamp
(Domestic Non‐
HID Only)
41 Air Conditioning
Compressor Clutch
43 Low‐Beam Daytime
Running Lamps
(non‐HID), Left
Daytime Running
Lamps (HID), Left
Trailer Turn Signal
(Export Only)
46 Left High‐Beam
Headlamp
47 Right High‐Beam
Headlamp
50 Right Daytime
Running Lamp
51 Airbag System
Ignition Switch Mini‐Fuses Usage
52 Engine Control
Module Ignition,
Transmission
Control Module
Ignition
54 Power Moding
(Immobilizer
Module, Ignition
Switch)
55 Not Used
56 Windshield Wipers
57 Right Low‐Beam
(HID Only)
58 Daytime Running
Lamps (non‐HID),
Left Low‐Beam
(HID Only)
59 Right Daytime
Running Lamp (HID
Only), Right Trailer
Turn Signal
(Export Only)