Replacing Fuses: Cadillac CTS 2011 Fuse Diagram and Relay Guide
To keep and fix problems with your 2011 Cadillac CTS’s electrical system, you need to know where the relays and fuse boxes are located. Changing fuses is a regular task that can help fix several electrical problems in your car. To quickly fix any electrical problems that might come up with your 2011 Cadillac CTS, you should learn how the relays and fuse boxes are set up. This guide will tell you exactly where the fuses are, how much they cost, what they do, and where the relays are located. This way, you’ll be able to fix any problems with your Cadillac CTS 2011 that involve fuses. Let’s learn more about the fuses and switches in your car to make sure it runs smoothly and efficiently.
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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 the following in the vehicle:
- Headlamp Wiring
- Windshield Wiper Motor
- Power Windows and Other Power Accessories
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 until the motor cools and will then restart.
Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage 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.
To check a fuse, look at the silver-coloured 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 you can. To identify and check fuses, circuit breakers, and relays, see Engine Compartment Fuse Block (CTS Coupe and Sedan) on page 10‑41 or Engine Compartment Fuse Block (CTS V Coupe and Sedan) on page 10‑45 or Engine Compartment Fuse Block (CTS Wagon) on pages 10‑48 or Engine Compartment Fuse Block (CTS V Wagon) on pages 10‑52 and Rear Compartment Fuse Block (CTS Coupe and Sedan) on page 10‑55 or Rear Compartment Fuse Block (CTS-V Coupe and Sedan) on page 10‑57 or Rear Compartment Fuse Block (CTS Wagon) on page 10‑59 or Rear Compartment Fuse Block (CTS-V Wagon) on page 10‑61.
Engine Compartment Fuse Block (CTS 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.
The vehicle may not be equipped with all of the fuses and relays shown.
Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
| Mini‐Fuses | Usage |
| 11 | Not Used |
| 19 | Antilock Braking System (ABS) |
| 22 | Display |
| Mini‐Fuses | Usage |
| 23 | Not Used |
| 24 | Body Control Module 1 |
|
25 |
Automatic Forward Lighting System (HID Only) |
| Mini‐Fuses | Usage |
| 26 | Body Control Module 5 |
| 27 | Body Control Module 4 |
| 28 | 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 |
| Mini‐Fuses | Usage |
| 38 | Headlamp Washer (HID Only) |
|
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 |
| Mini‐Fuses | Usage |
|
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) |
| 55 | Not Used |
| 56 | Windshield Wipers |
| 57 | Right Low‐Beam (HID Only) |
| Mini‐Fuses | Usage |
|
58 |
Daytime Running Lamps (non‐HID), Left Low‐Beam (HID Only) |
|
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 |
| Mini‐Fuses | Usage |
| 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 |
|
75 |
Transmission Output Speed Sensor, Brake Vacuum Relay |
| 76 | Spare |
| 77 | Spare |
| 78 | Spare |
| Mini‐Fuses | Usage |
| 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 |
| 13 | Not Used |
| 14 | Electric Parking Brake |
| 15 | Not Used |
| 16 | Not Used |
| J-Case Fuses | Usage |
| 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 |
| 12 | Horn |
| 20 | Headlamp Washer (HID Only) |
| Relays | Usage |
| 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) |
| 45 | Front Fog Lamps (HID Only) |
| 48 | High‐Beam Headlamps |
| Relays | Usage |
|
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 Speed |
Engine Compartment Fuse Block (CTS V Coupe and Sedan)
This fuse block is on the left 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.
Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
| Mini‐Fuses | Usage |
| 11 | Not Used |
| 19 | Antilock Braking System (ABS) |
| 22 | Display |
| 23 | Sunroof |
| Mini‐Fuses | Usage |
| 24 | Body Control Module 1 |
|
25 |
Automatic Forward Lighting System (HID Only) |
| 26 | Body Control Module 5 |
| Mini‐Fuses | Usage |
| 27 | Body Control Module 4 |
| 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 |
| Mini‐Fuses | Usage |
|
43 |
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 |
| J-Case Fuses | 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 |
| 42 | Right Daytime Running Lamp |
| Relays | Usage |
| 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 |
Engine Compartment Fuse Block (CTS Wagon)
This fuse block is on the left 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.
Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
| Mini‐Fuses | Usage |
| 11 | Not Used |
| 19 | Antilock Braking System (ABS) |
| 22 | Display |
| 23 | Not Used |
| Mini‐Fuses | Usage |
| 24 | Body Control Module 1 |
|
25 |
Automatic Forward Lighting System (HID Only) |
| 26 | Body Control Module 5 |
| Mini‐Fuses | Usage |
| 27 | Body Control Module 4 |
| 28 | 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) |
| Mini‐Fuses | Usage |
|
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 |
| 70 | Emissions 1 |
| 71 | Even Ignition Coils |
| 72 | Engine Control Module |
| 73 | Emissions 2 |
| Mini‐Fuses | Usage |
| 74 | Odd Ignition Coils |
|
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 |
| J-Case Fuses | Usage |
| 10 | Antilock Brake System Motor |
| 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 |
| Relays | Usage |
|
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, 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 Speed |
Engine Compartment Fuse Block (CTS V Wagon)
The underhood fuse block is located 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.
Notice: Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
| Mini‐Fuses | Usage |
| 11 | Not Used |
| 19 | Antilock Braking System (ABS) |
| 22 | Display |
| 23 | Sunroof |
| Mini‐Fuses | Usage |
| 24 | Body Control Module 1 |
|
25 |
Automatic Forward Lighting System (HID Only) |
| 26 | Body Control Module 5 |
| Mini‐Fuses | Usage |
| 27 | Body Control Module 4 |
| 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 |
| Mini‐Fuses | Usage |
|
43 |
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 |
| J-Case Fuses | 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.
| Relays | Usage |
| 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 |
| Mini‐Fuses | Usage |
| 22 | Right Position Lamp (Export Only) |
| 23 | Regulated Voltage Control Sensor |
| 24 | Audio System (Radio) |
| 25 | Airbag System |
|
26 |
Remote Keyless Entry/PASS‐Key® Theft Deterrent Module |
| 27 | Audio Speakers/ Subwoofer |
| 28 | OnStar® System (If Equipped) |
| 29 | Engine Control Module |
| 30 | Canister Vent |
| 31 | Fuel Pump |
| Mini‐Fuses | Usage |
| 33 | Stop Lamps (Export Only) |
|
34 |
Theft Deterrent System/Universal Garage Door Opener |
| 35 | Memory Seat Module |
| 36 | Passenger Door Module |
| 38 | Not Used |
| 39 | Amplifier |
| Circuit Breakers | Usage |
| 1 | Driver Power Seat Switch |
| 2 | Passenger Power Seat Switch |
| 3 | Power Windows |
| Circuit Breakers | Usage |
| 4 | Power Steering Column |
| 32 | Left Rear Window Switch |
| 37 | Right Rear Window Switch |
Rear Compartment Fuse Block (CTS-V 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 are shown.
| Relays | Usage |
| 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 | Fuel Pump |
| Mini‐Fuses | Usage |
| 22 | Right Position Lamp (Export Only) |
| 23 | Regulated Voltage Control Sensor |
| 24 | Audio System (Radio) |
| 25 | Airbag System |
|
26 |
Remote Keyless Entry/PASS‐Key® Theft Deterrent Module |
| 27 | Audio Speakers/ Subwoofer |
| 28 | OnStar® System (If Equipped) |
| 29 | Engine Control Module |
| 30 | Canister Vent |
| 31 | Rear Differential Cooling Pump |
| Mini‐Fuses | Usage |
| 33 | Stop Lamps (Export Only) |
|
34 |
Theft Deterrent System/Universal Garage Door Opener |
| 35 | Memory Seat Module |
| 36 | Passenger Door Module |
| 38 | Not Used |
| 39 | Amplifier |
| Circuit Breakers | Usage |
| 1 | Driver Power Seat Switch |
| 2 | Passenger Power Seat Switch |
| 3 | Power Windows |
| Circuit Breakers | Usage |
| 4 | Power Steering Column |
| 32 | Left Rear Window Switch |
| 37 | Right Rear Window Switch |
Rear Compartment Fuse Block (CTS Wagon)
This fuse block is on the right side of the vehicle, behind the trim panel in the rear compartment.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
| Relays | Usage |
| 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 | Not Used |
| 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 | Rear Windshield Wiper/Washer |
| 20 | Windshield Washer Pump |
| 21 | Sunroof |
| Mini‐Fuses | Usage |
| 22 | Right Position Lamp (Export Only) |
| 23 | Regulated Voltage Control Sensor |
| 24 | Audio System (Radio) |
| 25 | Airbag System |
|
26 |
Remote Keyless Entry/PASS‐Key® Theft Deterrent Module |
| 27 | Audio Speakers/ Subwoofer |
| 28 | OnStar® System (If Equipped) |
| 29 | Engine Control Module |
| 30 | Canister Vent |
| 31 | Fuel Pump |
| Mini‐Fuses | Usage |
| 33 | Stop Lamps (Export Only) |
|
34 |
Theft Deterrent System/Universal Garage Door Opener |
| 35 | Memory Seat Module |
| 36 | Passenger Door Module |
| 38 | Rear Auxiliary Power Outlet |
| 39 | Amplifier |
| Circuit Breakers | Usage |
| 1 | Driver Power Seat Switch |
| 2 | Passenger Power Seat Switch |
| Circuit Breakers | Usage |
| 3 | Power Windows |
| 4 | Power Steering Column |
| 32 | Left Rear Window Switch |
| 37 | Right Rear Window Switch |
Rear Compartment Fuse Block (CTS-V Wagon)
The rear compartment fuse block is located on the passenger side of the vehicle, behind the trim panel in the rear compartment.
The vehicle may not be equipped with all of the fuses and relays shown.
| Relays | Usage |
| 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 | Not Used |
| 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 | Rear Windshield Wiper/Washer |
| 20 | Windshield Washer Pump |
| 21 | Fuel Pump |
| Mini‐Fuses | Usage |
| 22 | Right Position Lamp (Export Only) |
| 23 | Regulated Voltage Control Sensor |
| 24 | Audio System (Radio) |
| 25 | Airbag System |
|
26 |
Remote Keyless Entry/PASS‐Key® Theft Deterrent Module |
| 27 | Audio Speakers/ Subwoofer |
| 28 | OnStar® System |
| 29 | Engine Control Module |
| Mini‐Fuses | Usage |
| 30 | Canister Vent |
| 31 | Rear Differential Cooling Pump |
| 33 | Stop Lamps (Export Only) |
|
34 |
Theft Deterrent System/Universal Garage Door Opener |
| 35 | Memory Seat Module |
| 36 | Passenger Door Module |
| 38 | Rear Auxiliary Power Outlet |
| 39 | Amplifier |
| Circuit Breakers | Usage |
| 1 | Driver Power Seat Switch |
| 2 | Passenger Power Seat Switch |
| 3 | Power Windows |
| 4 | Power Steering Column |
| 32 | Left Rear Window Switch |
| 37 | Right Rear Window Switch |
HOW TO REPLACE Replacing Fuses: Cadillac CTS 2011 Fuse Diagram and Relay Guide
Materials Needed:
- Replacement fuses (appropriate amperage)
- Fuse puller tool or needle-nose pliers
- Flashlight (optional but helpful for visibility
Instructions:
- Locate the Fuse Box: The fuse box in a Cadillac CTS 2011 is typically located in one of two places: either under the hood near the battery or in the interior cabin, often under the dashboard on the driver’s side. Refer to your owner’s manual for the exact location.
- Identify the Fuse: Use the fuse diagram provided in your owner’s manual to locate the fuse that needs to be replaced. The diagram will show you the location and amperage rating of each fuse.
- Turn Off the Ignition: Before replacing any fuses, make sure the ignition is turned off to prevent any electrical hazards.
- Use Fuse Puller or Pliers: If your Cadillac CTS is equipped with a fuse puller tool, use it to carefully remove the blown fuse. If not, a pair of needle-nose pliers can also be used. Gently grip the fuse and pull it straight out of its slot.
- Inspect the Fuse: Take a close look at the fuse you removed. If the metal strip inside is broken or melted, it’s likely blown and needs to be replaced.
- Select the Correct Replacement Fuse: Choose a replacement fuse with the same amperage rating as the one you removed. Using a fuse with a higher or lower rating can cause electrical issues or damage to your vehicle.
- Install the Replacement Fuse: Carefully insert the new fuse into the slot, making sure it fits snugly. Avoid forcing it or bending the metal tabs.
- Check for Loose Connections: After replacing the fuse, double-check that it’s securely seated in its slot and that there are no loose connections.
- Test the Circuit: Turn the ignition back on and test the circuit to ensure the new fuse is functioning properly. If the problem persists, you may have a more significant electrical issue that requires professional attention.
Tips:
- Always carry spare fuses of various amperages in your vehicle in case of emergencies.
- If you’re unsure which fuse is causing the issue, you can systematically check each fuse in the fuse box using a multimeter set to continuity mode.
- Be patient and gentle when removing and installing fuses to avoid damaging the fuse box or surrounding components.
- If you’re uncomfortable replacing fuses yourself, don’t hesitate to seek assistance from a qualified automotive technician.
FAQs
Common components protected by fuses in a 2011 Cadillac CTS include the vehicle’s lighting system, power windows, audio system, air conditioning, and various electronic modules.
A blown fuse in a 2011 Cadillac CTS can often be identified by visual inspection; the metal filament inside the fuse will be broken or melted. Additionally, using a multimeter can confirm whether a fuse is conducting electricity.
The fuse box in a 2011 Cadillac CTS is typically located in the engine compartment near the battery or in the interior of the vehicle, often on the driver’s side dashboard or under the steering wheel.
To access the fuse box in a 2011 Cadillac CTS, you may need to open the hood for the engine compartment fuse box or locate and open the fuse panel cover in the interior of the vehicle.
Before replacing fuses in a 2011 Cadillac CTS, it’s important to turn off the ignition and disconnect the battery to prevent electrical hazards. Additionally, use the appropriate fuse rating and ensure the replacement fuse matches the original.
Yes, some high-amperage fuses in a 2011 Cadillac CTS, such as those for the starter motor or power distribution system, may require special attention due to their critical role in powering essential components.
The correct fuse rating for replacement in a 2011 Cadillac CTS is typically indicated on the fuse diagram or inside the fuse box cover. Using a fuse with an incorrect rating can lead to electrical damage or malfunction.
It’s essential to use a fuse of the same rating as the original for replacement in a 2011 Cadillac CTS to ensure proper protection of electrical circuits and components.
The tools needed to replace fuses in a 2011 Cadillac CTS typically include a fuse puller tool or a pair of needle-nose pliers for removing the old fuse and a flashlight for better visibility.
Some models of the 2011 Cadillac CTS may come with spare fuses provided in the fuse box or included in the vehicle’s toolkit for emergency replacement.
To replace a relay in a 2011 Cadillac CTS, locate the relay box typically located near the fuse box, identify the faulty relay using the diagram, and pull it straight out. Insert the new relay in its place, ensuring it’s seated properly.
While some relay failures may be visually obvious, it’s often challenging to determine if a relay is faulty through visual inspection alone. Testing with a multimeter or replacing the relay with a known working one is a more reliable method.
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