
Cadillac CTS 2012 Fuse Box Info
Luggage compartment fuse box:

The luggage compartment fuse box is located on top of the battery, on the right side of the trunk.
Engine compartment fuse box:

Fuse Box Diagram | Layout
Luggage compartment fuse box:

Cadillac CTS Coupe and Sedan Fuse Box:
| Fuse/Relay N° | Functions |
| 1 | Driver Power Seat Switch |
| 2 | Passenger Power Seat Switch |
| 3 | Power Windows |
| 4 | Power Steering Column |
| 5 | Stop Lamps (Export Only) |
| 6 | Door Lock |
| 7 | Door Unlock |
| 8 | Fuel Door Unlock (Export Only) |
| 9 | Right Position Lamp (Export Only) |
| 10 | Console/Auxiliary Power Outlet |
| 11 | Sedan Trunk Release/Coupe Rear Fog (Export Only) |
| 12 | Side Marker Lamps |
| 13 | Left Position Lamps |
| 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 |
| 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 |
| 32 | Left Rear Window Switch |
| 33 | Stop Lamps (Export Only) |
| 34 | Theft Deterrent System/Universal Garage Door Opener |
| 35 | Memory Seat Module |
| 36 | Passenger Door Module |
| 37 | Right Rear Window Switch |
| 38 | Side Blind Zone Alert (Coupe Only) |
| 39 | Amplifier |
Cadillac CTS Wagon Fuse Box:
| Fuse/Relay N° | Functions |
| 1 | Driver Power Seat Switch |
| 2 | Passenger Power Seat Switch |
| 3 | Power Windows |
| 4 | Power Steering Column |
| 5 | Stop Lamps (Export Only) |
| 6 | Door Lock |
| 7 | Door Unlock |
| 8 | Fuel Door Unlock (Export Only) |
| 9 | Right Position Lamp (Export Only) |
| 10 | Console/Auxiliary Power Outlet |
| 11 | Not Used |
| 12 | Side Marker Lamps |
| 13 | Left Position Lamps |
| 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 |
| 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 |
| 32 | Left Rear Window Switch |
| 33 | Stop Lamps (Export Only) |
| 34 | Theft Deterrent System/Universal Garage Door Opener |
| 35 | Memory Seat Module |
| 36 | Passenger Door Module |
| 37 | Right Rear Window Switch |
| 38 | Rear Auxiliary Power Outlet |
| 39 | Amplifier |
Engine compartment fuse box:

Cadillac CTS Coupe and Sedan Fuse Box:
| Fuse/Relay N° | Functions |
| 1 | Cooling Fan 2 |
| 2 | Cooling Fan 1 |
| 3 | Starter |
| 4 | Rear Window Defogger |
| 5 | Instrument Panel Auxiliary Power Outlet |
| 6 | Cooling Fan 2 |
| 7 | Cooling Fan 1 |
| 8 | Starter |
| 9 | Brake Vacuum Pump |
| 10 | Antilock Brake System Motor |
| 11 | Not Used |
| 12 | Horn |
| 13 | Not Used |
| 14 | Electric Parking Brake |
| 15 | Not Used |
| 16 | Not Used |
| 17 | Blower Motor |
| 18 | Rear Window Defogger |
| 19 | Antilock Braking System (ABS) |
| 20 | Headlamp Washer (HID Only) |
| 21 | Cooling Fan (Series/Parallel) |
| 22 | Display |
| 23 | Not Used |
| 24 | Body Control Module 1 |
| 25 | Automatic Forward Lighting System (HID Only) |
| 26 | Body Control Module 5 |
| 27 | Body Control Module 4 |
| 28 | Navigation Motor |
| 29 | All-Wheel Drive |
| 30 | Transmission Control Module Battery |
| 31 | Horn |
| 32 | Air Conditioning Compressor Clutch |
| 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 |
| 37 | Not Used |
| 38 | Headlamp Washer (HID Only) |
| 39 | Windshield Washer Pump |
| 40 | Right Low‐Beam Headlamp (Domestic Non‐HID Only) |
| 41 | Air Conditioning Compressor Clutch |
| 42 | Right Daytime Running Lamp, Trailer Turn Signal |
| 43 | Low‐Beam Daytime Running Lamps (non‐HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) |
| 44 | Low‐Beam (non‐HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) |
| 45 | Front Fog Lamps (HID Only) |
| 46 | Left High‐Beam Headlamp |
| 47 | Right High‐Beam Headlamp |
| 48 | High‐Beam Headlamps |
| 49 | Daytime Running Lamps (Non‐HID), Low‐Beam Headlamps (HID) |
| 50 | Right Daytime Running Lamp, Windshield Washer Pump |
| 51 | Airbag System Ignition Switch |
| 52 | Engine Control Module Ignition, Transmission Control Module Ignition |
| 53 | Not Used |
| 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) |
| 60 | Instrument Panel Auxiliary Power Outlet |
| 61 | Air Quality Sensor, Inside Rear View Mirror, Rear Camera |
| 62 | Ignition |
| 63 | Main Ignition |
| 64 | Steering Wheel Illumination |
| 65 | Front Fog Lamps (HID Only) |
| 66 | Windshield Wipers |
| 67 | Powertrain |
| 68 | Windshield Wipers High Speed |
| 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 |
| 79 | Spare |
| 80 | Spare |
| 81 | Spare |
Cadillac CTS Wagon Fuse Box:
| Fuse/Relay N° | Functions |
| 1 | Cooling Fan 2 |
| 2 | Cooling Fan 1 |
| 3 | Starter |
| 4 | Rear Window Defogger |
| 5 | Instrument Panel Auxiliary Power Outlet |
| 6 | Cooling Fan 2 |
| 7 | Cooling Fan 1 |
| 8 | Starter |
| 9 | Brake Vacuum Pump |
| 10 | Antilock Brake System Motor |
| 11 | Not Used |
| 12 | Horn |
| 13 | Not Used |
| 14 | Electric Parking Brake |
| 15 | Not Used |
| 16 | Not Used |
| 17 | Blower Motor |
| 18 | Transmission Control Module Battery |
| 19 | Antilock Braking System (ABS) |
| 20 | Headlamp Washer (HID Only) |
| 21 | Cooling Fan (Series/Parallel) |
| 22 | Display |
| 23 | Not Used |
| 24 | Body Control Module 1 |
| 25 | Automatic Forward Lighting System (HID Only) |
| 26 | Body Control Module 5 |
| 27 | Body Control Module 4 |
| 28 | Navigation Motor |
| 29 | All-Wheel Drive |
| 30 | Transmission Control Module Battery |
| 31 | Horn |
| 32 | Air Conditioning Compressor Clutch |
| 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 |
| 37 | Trailer (Export Only) |
| 38 | Headlamp Washer (HID Only) |
| 39 | Not Used |
| 40 | Right Low‐Beam Headlamp (Domestic Non‐HID Only) |
| 41 | Air Conditioning Compressor Clutch |
| 42 | Right Daytime Running Lamp, Trailer Turn Signal |
| 43 | Low‐Beam Daytime Running Lamps (non‐HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) |
| 44 | Low‐Beam (non‐HID), Left Daytime Running Lamps (HID), Left Trailer Turn Signal (Export Only) |
| 45 | Front Fog Lamps (HID Only) |
| 46 | Left High‐Beam Headlamp |
| 47 | Right High‐Beam Headlamp |
| 48 | High‐Beam Headlamps |
| 49 | Daytime Running Lamps (Non‐HID), Low‐Beam Headlamps (HID) |
| 50 | Right Daytime Running Lamp |
| 51 | Airbag System Ignition Switch |
| 52 | Engine Control Module Ignition, Transmission Control Module Ignition |
| 53 | Not Used |
| 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) |
| 60 | Instrument Panel Auxiliary Power Outlet |
| 61 | Air Quality Sensor, Inside Rear View Mirror, Rear Camera |
| 62 | Ignition |
| 63 | Main Ignition |
| 64 | Steering Wheel Illumination |
| 65 | Front Fog Lamps (HID Only) |
| 66 | Windshield Wipers |
| 67 | Powertrain |
| 68 | Windshield Wipers High Speed |
| 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 |
| 79 | Spare |
| 80 | Spare |
| 81 | Spare |





