This article provides fuse box diagrams for the Cadillac STS luxury sedan, manufactured from 2005 to 2011 (with a facelift in 2008). It includes the locations of fuse panels inside the car and details about each fuse and relay assignment.
Table of Contents
Cigar lighter / power outlet fuses in the Cadillac STS are located in the Engine compartment fuse box. 2005-2007 – see fuses “I/P OUTLET” (Front Auxiliary Outlet) and “OUTLET” (Rear Auxiliary Power Outlet). 2008-2011 – see fuses “FRT PWR OUTLET” (Front Accessory Power Outlet) and “AUX OUTLET” (Rear Accessory Power Outlet).
[2005/ 2006/ 2007]
Engine compartment
| Name | Description |
|---|---|
| Fuses | |
| BLOWER | Blower Motor |
| R REAR | Passenger’s Side Rear Fuse Block |
| I/P OUTLET | Front Auxiliary Outlet |
| CCP | Climate Control, Headlamp Leveling |
| PRE O2/CAM | 2005-2006: Oxygen Sensor, CAM Phasers 2007: Oxygen Sensor, Variable Intake (V6), Purge Solenoid (V6), Camshaft Phasers (V6) |
| R REAR | Passenger’s Side Rear Fuse Block |
| WPR SW | Wiper/Washer Switch |
| FOG LAMP | Fog Lamps |
| OUTLET | Rear Auxiliary Power Outlet |
| EVEN COILS | Even Ignition Coils, Even Fuel Injectors |
| L REAR | Left Rear Fuse Block |
| WPR MOD | Wiper Module |
| POST O2 | Oxygen Sensor |
| COMP CLTCH | Air Conditioner Compressor Clutch |
| STARTER | Starter Solenoid |
| ABS | Anti-Lock Brake Pump |
| L REAR | Driver’s Side Rear Fuse Block |
| RAIN SSR | Rain Sensor, Headlamp Washer, Tire Pressure Monitor |
| CCP | Climate Control |
| SMT BM-OPT | Smart Beam Relay (Option) |
| EXT LIGHTS | Low Beam Relay, High Beam Relay, Park Lamp Relay |
| VOLT CHECK | Instrument Panel Module |
| ECM/TCM | Engine Control Module, Transmission Control Module, Easy Key Module, Instrument Panel Cluster |
| SPARE | Spare |
| LT PARK | Left Park Lamp, Left Taillamp |
| LIC DIMMING | License Plate, Instrument Panel Dimming |
| IPM ALDL | Instrument Panel Module Assembly Line Data Link Connector |
| HUD | 2005-2006: Heads-Up Display, Column Lock Module 2007: Heads-Up Display, Column Lock Module, Steering Column Switch |
| V8 ECM | 2005-2006: V8 ECM, Evap Solenoid 2007: V8 Engine Control Module (ECM), Evap. Solenoid, Vacuum Bypass |
| ABS | Anti-Lock Brake Controller |
| STR RLY | Starter Relay |
| WASH NOZ/AQS | Heated Washer Nozzles, Air Quality Sensor™ |
| ODD COILS | Odd Ignition Coils, Odd Fuel Injectors |
| TCM IPC | 2005-2006: Transmission, Instrument Panel, Engine Control 2007: Transmission Control Module (TCM), Instrument Panel, Engine Control |
| MAF | Mass Air Flow Sensor |
| HIGH FAN | Cooling Fan – High Speed |
| LOW FAN | Cooling Fan – Low Speed |
| RT PARK | Right Park Lamp, Right Taillamp |
| HORN | Horn |
| LT HI BEAM | Left Headlamp High Beam |
| LT LOW BEAM | Left Headlamp Low Beam |
| RT LOW BEAM | Right Headlamp Low Beam |
| RT HI BEAM | Right Headlamp High Beam |
| HFV6 ECM | 2005-2006: High Feature V6 Engine Control Module 2007: High Feature V6 Engine Control Module (ECM), Mass Air Flow Sensor (MAF) (V8) |
| HDLP WASH RELAY JUMPER -OPT | Headlamp Washer |
| Circuit brakers | |
| HDLP WASH C/B -OPT | Headlamp Washer (Option) |
| Relays | |
| STARTER RELAY MINI | Starter |
| SPARE | Spare |
| FOG LAMP RELAY MICRO | Fog Lamps |
| CMP CLU RELAY MICRO | A/C Compressor Clutch |
| BLOWER RELAY MINI | Front Blower Motor |
| POWERTRAIN RELAY MICRO | Engine Controls |
| RUN/CRANK RELAY MICRO | 2005-2006: Ignition 1 2007: Ignition 1, Starter, Washer Nozzle, Air Quality, Anti-lock Brake System, Climate Control Panel, Transmission Control Module, Instrument Panel Cluster, Mass Airflow Sensor, Engine Control Module |
| LOW SPEED FAN RELAY MINI | Cooling Fan Low Speed |
| ACCESSORY RELAY MINI | 2006-2006: Ignition 3 2007: Ignition 3, Rain Sensor, Headlamp Washer, Windshield Wiper/Washer Module |
| PARK LAMP RELAY MICRO | 2005-2006: Parking Lamps 2007: Parking Lamps, Instrument Panel Dimming, Rear License Plate Lamps |
| HIGH BEAM RELAY MICRO | Headlamp High-Beam |
| LOW BEAM RELAY/HID MINI-OPT | Low-Beam/High Intensity Discharge |
| HIGH SPEED FAN RELAY MINI | Cooling Fan High Speed |
| S/P FAN RELAY MINI | Cooling Fan Series/Parallel |
| HORN RELAY MICRO | Horn |
| Harness Connection | |
| ENG W/H | Engine Harness Connection |
| BODY W/H | Body Harness Connection |
| BODY W/H | Body Harness Connection |
Rear Underseat Box (Driver’s Side)
| Name | Description |
|---|---|
| Fuses | |
| AMP | Amplifier |
| INTERCOOLER PUMP | Intercooler Pump (Option) |
| THEFT/SHIFTER | Theft Sensors, Auto Shifter |
| MR-RTD MOD | MR-CVRTD Suspension Module (Option) |
| REAR DR MOD | Rear Door Modules |
| ELC SOL | 2005-2006: Exhaust Solenoid 2007: Automatic Level Control, Exhaust Solenoid (Option) |
| DRIVER DR MOD | 2005-2006: Driver Door Module 2007: Driver Door Module, Front Door SubWoofers (Option) |
| TV/VICS | Infotainment (Export Only) |
| REAR HTD SEATS | Rear Heated Seats |
| SPARE | Spare |
| SPARE | Spare |
| IGN3 | Front Passenger Heated Seat, Auto Shifter, Occupant Protection |
| RR SHLF SPEAKER | Rear Shelf Speaker (Option) |
| DPM | Memory Seat, Lumbar |
| TRUNK DR VALET | Trunk Release, Valet Lockout Switch |
| REVERSE LAMP | Reverse Lamps, Rear Parking Aid, Inside Rearview Mirror |
| AIR BAG | Airbag |
| POSITION LAMPS | Rear Taillamps |
| ELC RELAY | Automatic Level Control (Option) |
| Relays | |
| INTERCOOLER PUMP MICRO | Intercooler Pump (Option) |
| ELC RELAY | Automatic Level Control Compressor (Option) |
| L POSITION RELAY MICRO | Left Rear Taillamp, Position Lamps (Option) |
| TRUNK DR REL RELAY MICRO | Trunk Release Motor |
| REV LAMP RELAY MICRO | 2005-2006: Reverse Lamps, Rear Parking Aid 2007: Reverse Lamps, Rear Parking Aid, Inside Rearview Mirror |
| R POSITION RELAY MICRO | Right Rear Taillamp, Position Lamps (Option) |
| RUN RELAY MICRO | Ignition 3 |
| STNDBY LAMP RLY | Rear Taillamps, Position Lamps (Option) |
| Circuit Breakers | |
| SEATS C/B | Power Seat |
| Diode | |
| SPARE | Spare |
| Joint Connector | |
| JOINT CONNECTOR | Splice Pack (Green) |
Rear Underseat Box (Passenger’s Side)
| Name | Description |
|---|---|
| Fuses | |
| SPARE | Spare |
| CANISTER VENT | Canister Vent Solenoid |
| RT TURN-RIM | Right Turn Signal |
| SUNROOF | Sunroof Module (Option) |
| STOP LAMPS | Stoplamps |
| FUEL PUMP | Fuel Pump |
| RF HTD ST/S-BAND | Front Passenger Heated Seat, S-Band Antenna |
| RADIO/ONSTAR | Radio/OnStar |
| AIR BAG | Airbags |
| RIM | Battery to Rear Integration Module |
| RUN/CRANK | 2005-2006: Ignition 1 2007: Ignition 1, Fog Lamps, Compressor Clutch, Engine Run/Crank Relays |
| HTD STG/CLM | Heated Steering Wheel, Column Lock Module |
| REAR DEFOG | Rear Defogger |
| INTERIOR LAMP | Interior Lamps |
| PSG DR MOD | Front Passenger Door Module |
| LT TURN-RIM | Left Turn Signal |
| REAR FOG LAMP (OPT) | Rear Fog Lamps (Option) |
| AFTERBOIL/DIFF PUMP | 2005-2006: After Boil Pump 2007: After Boil, Rear Differential Cooling Pump |
| RIM | Ignition to Rear Integration Module |
| Relays | |
| SPARE | Spare |
| REAR DEFOG RELAY MINI | Rear Defog |
| FUEL PUMP RELAY MICRO | Fuel Pump |
| REAR FOG LAMP RLY MICRO (OPT) | Rear Fog Lamps (Option) |
| STOP LAMP RELAY MICRO | Stoplamps |
| INT LAMP RELAY MICRO | Interior Lamps |
| RUN/CRANK RELAY MICRO | Ignition 1 |
| AFTERBOIL RELAY MICRO | After Boil Pump (Option) |
| Circuit Breakers | |
| WINDOW MTRS C/B | Power Window Motors Circuit Breaker |
| Diodes | |
| TRUNK DIODE | Trunk Release |
| Joint Connector | |
| JOINT CONNECTOR | Splice Pack (Blue) |
[2008/ 2009/ 2010/ 2011]
Engine compartment
| Name | Description |
|---|---|
| J-Case Fuses | |
| ABS MTR | ABS Module- ABS Module-StabiliTrak® |
| AFS | Active Front Steering |
| BLWR | Blower Motor |
| FAN 1 | Cooling Fan-Low Speed |
| FAN 2 | Cooling Fan-High Speed |
| LPDB 1 | Driver Side Rear Fuse Block |
| LPDB 2 | Driver Side Rear Fuse Block |
| RPDB 1 | Passenger Side Rear Fuse Block |
| RPDB 2 | Passenger Side Rear Fuse Block |
| SPARE | Spare |
| Mini Fuses | |
| A/C CLTCH | Air Conditioning Compressor Clutch |
| ABS | ABS Module-StabiliTrak® |
| ABS IGN | Antilock Brake Controller |
| AUX OUTLET | Rear Accessory Power Outlet |
| BRK VAC PUMP | Brake Vacuum Pump |
| CCP | Climate Control Panel |
| CCP/RLY COILS | Climate Control Panel, Headlamp Level Control, Active Cruise Control, Relay Coils, Starter, Front Blower |
| ECM 1 | Engine Control Module (ECM) |
| ECM/TCM BATT | ECM, Transmission Control Module (TCM) |
| ECM/TCM IGN | ECM, TCM, Instrument Panel Cluster |
| EKM/I/P MDL | Easy Key Module (EKM), Instrument Panel Module (I/P MDL) |
| EVEN COILS | Even Ignition Coils, Even Fuel Injectors |
| FOG LAMP | Front Fog Lamps |
| FRT PWR OUTLET | Front Accessory Power Outlet |
| FUEL COOL | Fuel Cooling |
| HORN | Horn |
| HTD WASH/AQS | Heated Headlamp Washer, Air Quality Sensor |
| HUD | Heads-Up Display, Steering Column Switch |
| I/BEAM | IntelliBeam Relay |
| I/P MDL/ALDL | Instrument Panel Module, Assembly Line Data Link Connector |
| LIC DIM | License Plate, Instrument Panel Dimming |
| LT HI BEAM | Driver Side High Beam Headlamp |
| LT LO BEAM | Driver Side Low Beam Headlamp |
| LT PRK | Driver Side Park Lamp/Driver Side Taillamp |
| ODD COILS | Odd Ignition Coils, Odd Fuel Injectors |
| POST O2 SNSR | Post Oxygen Sensor |
| PRE O2 SNSR | Pre Oxygen Sensor, CAM Sensors |
| RAIN SNSR/TPM | Rain Sensor, Relay Coil: Headlamp Wash |
| RT HI BEAM | Passenger Side High Beam Headlamp |
| RT LO BEAM | Passenger Side Low Beam Headlamp |
| RT PRK | Passenger Side Park Lamp, Passenger Side Taillamp |
| SPARE | Spare |
| V/CHK | Instrument Panel Module-Voltage Check |
| WPR | Wipe/Wash Module Assembly |
| WPR SW/VICS | Rain Sensor, Wiper Switch |
| Relays | |
| A/C CMPRSR CLTCH | Air Conditioning Compressor Clutch |
| ACCY | Accessory Rain Sensor, Headlamp Washer Relay Coil, Windshield Wiper/Washer Module |
| BRK VAC PUMP | Brake Vacuum Pump |
| FAN S/P | Cooling Fan Series/Parallel |
| FOG LAMP | Fog Lamps |
| FRT BLWR | Front Blower Motor |
| FUEL COOL | Fuel Cooling Pump |
| HI BEAM | High Beam Headlamp |
| HI FAN SPD | Cooling Fan High Speed |
| HORN | Horn |
| LO FAN SPD | Cooling Fan Low Speed |
| LOW BEAM W/O HID/HID | Low Beam Headlamp, High Intensity Discharge (HID) |
| PRK LAMP | Parking Lamps, Instrument Panel Dimming, Rear License Plate Lamps |
| PWR/TRN | Engine Controls |
| RUN CRNK | Heated Washer Nozzle, Air Quality, Antilock Brake System, Climate Control Panel, TCM, ECM, Instrument Control Panel, Instrument Control Panel Cluster |
| SPARE | Spare |
| STRTR | Starter |
| WPR HI | Windshield Wiper High Speed |
| Circuit Breakers | |
| HDLP WASH | Headlamp Washer Motor (Circuit Breaker) |
Rear Underseat Fuse Box (Driver’s Side)
| Name | Description |
|---|---|
| Fuses | |
| AMP | Amplifier |
| INCLR PUMP | Inner Cooler Pump (Option) |
| THEFT/SHFT | Theft Sensors, Auto Shifter, Power Sounder |
| MRTD MDL | Magnetic Ride Control Module (Option) |
| REAR DR MDL | Rear Door Modules |
| ELC EXH | Electronic Level Control, Exhaust Solenoid (Option) |
| DDM | Driver Door Module, Front Door SubWoofers (Option) |
| TV/VICS/SCM | Infotainment (Export Only), Supervisory Control Module (Option) |
| REAR HTD/SEATS | Rear Heated Seats |
| SPARE | Spare |
| IGN3 | Front Passenger Heated Seat, Auto Shifter, Occupant Protection, Electronic Tension Reducer for Seatbelt |
| REAR SHLF SPKR | Rear Shelf Speaker (Option) |
| MSM | Memory Seat Module Lumbar |
| TRUNK RELSE SW | Trunk Release, Valet Lockout Switch |
| BCK/UP LAMP | Reverse Lamps, Rear Parking Aid, Inside Rearview Mirrors |
| AIR BAG/BATT | Airbag |
| POS LAMPS | Rear Taillamps |
| ELC CMPRSR | Automatic Level Control (Option) |
| Relays | |
| INCLR PUMP | Inner Cooler Pump (Option) |
| ELC CMPRSR | Electronic Level Control, Compressor (Option) |
| LT POS | Left Rear Taillamp, Position Lamps (Option) |
| RT POS | Right Rear Taillamp, Position Lamps (Option) |
| RUN | Ignition 3 |
| STDBY LAMP | Rear Taillamps, Position Lamps (Option) |
| TRUNK RELSE | Trunk Release Motor |
| BCK/UP LAMP | Reverse Lamps, Rear Parking Aid, Inside Rearview Mirror |
| Circuit Breakers | |
| PWR SEATS | Power Seats |
| Diodes | |
| SPARE | Spare |
| Joint Connector | |
| J/C | Splice Pack (Green) |
Rear Underseat Fuse Box (Passenger’s Side)
| Name | Description |
|---|---|
| Fuses | |
| AIRBAG/IGN | Sensing and Diagnostic Monitor, Automatic Occupant Sensor, Passenger Supplemental Inflatable Restraint |
| CNSTR/VENT | Canister Vent Solenoid |
| DIFF PUMP | Rear Differential Pump |
| FRT PDM | Front Passenger Door Module, Right Power Subwoofer |
| FUEL PUMP | Fuel Pump |
| HTD STR | Heated Steering Wheel |
| RF HTD/SEAT/XM | Front Passenger Heated Seat, S-Band™ Antenna |
| RDO/ONSTAR | Radio, OnStar® |
| INT LAMP | Interior Lamps |
| LT TRN/LDW | Left Turn Signal, Lane Departure Warning (Option) |
| REAR DEFOG | Rear Defogger |
| REAR/FOG | Rear Fog Lamps (Option) |
| RIM | Rear Integration Module |
| RIM /RPA /ISRVM /CLM | Rear Integration Module, Rear Parking Aid, Inside Rearview Mirror, Column Lock Module, Power Sounder, Active Front Steering (AFS), Supervisory Control Module |
| RUN/CRNK | UHBEC Run, CRNK Relay Coil, Rear Fog Lamp Relay Coil |
| S/ROOF | Sun Roof Module (Option) |
| SPARE | Spare |
| STOP LAMPS | Stop Lamps |
| RT TRN/SZBA | Right Turn Signal, Side Blind Zone Alert (Option) |
| Relays | |
| DIFF PUMP | Rear Differential Pump (Option) |
| FUEL PUMP | Fuel Pump |
| INT LAMP | Interior Lamps |
| REAR DEFOG | Rear Defogger |
| REAR/FOG | Rear Fog Lamps (Option) |
| RUN/CRNK | Ignition 1 |
| SPARE | Spare |
| STOP LAMP | Stop Lamp |
| Circuit Breakers | |
| WINDOW MTRS | Power Window Motors Circuit Breaker |
| Diodes | |
| TRUNK DIODE | Trunk Release |
| Joint Connector | |
| J/C | Splice Pack (Blue) |
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