Cadillac STS | 2005-2011 | Fuse Box Diagrams and Locations

Access Cadillac STS fuse box diagrams for 2005–2011 models with relay assignments, fuse locations, panel diagrams, and electrical layout details. This article covers the mid-sized luxury sedan Cadillac STS, produced from 2005 (facelifted in 2008), and includes fuse box diagrams for Cadillac STS 2005, 2006, 2007, 2008, 2009, 2010 and 2011, along with details about the location of the fuse panels inside the vehicle and a clear explanation of the assignment of each fuse and relay (fuse layout).

Engine Compartment

Fuse Box Location

Fuse box is located in the engine compartment on the passenger side.

Fuse Box Diagram

2005-2007

Fuses

Assignment of the fuses in the engine compartment (2005, 2006, 2007)

Fuse Data

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Short-Code	Description
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 Breakers

Assignment of the circuit breakers in the engine compartment (2005, 2006, 2007)

Fuse Data

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Short-Code	Description
HDLP WASH C/B -OPT	Headlamp Washer (Option)

Relays

Assignment of the relays in the engine compartment (2005, 2006, 2007)

Fuse Data

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Short-Code	Description
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

Assignment of the harness connectors in the engine compartment (2005, 2006, 2007)

Fuse Data

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Short-Code	Description
ENG W/H	Engine Harness Connection
BODY W/H	Body Harness Connection
BODY W/H	Body Harness Connection

2008-2011

Fuses

Assignment of the fuses in the engine compartment (2008, 2009, 2010, 2011)

Fuse Data

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Short-Code	Type	Description
ABS MTR	J-Case	ABS Module- ABS Module-StabiliTrak®
AFS	J-Case	Active Front Steering
BLWR	J-Case	Blower Motor
FAN 1	J-Case	Cooling Fan-Low Speed
FAN 2	J-Case	Cooling Fan-High Speed
LPDB 1	J-Case	Driver Side Rear Fuse Block
LPDB 2	J-Case	Driver Side Rear Fuse Block
RPDB 1	J-Case	Passenger Side Rear Fuse Block
RPDB 2	J-Case	Passenger Side Rear Fuse Block
SPARE	J-Case	Spare
A/C CLTCH	Mini	Air Conditioning Compressor Clutch
ABS	Mini	ABS Module-StabiliTrak®
ABS IGN	Mini	Antilock Brake Controller
AUX OUTLET	Mini	Rear Accessory Power Outlet
BRK VAC PUMP	Mini	Brake Vacuum Pump
CCP	Mini	Climate Control Panel
CCP/RLY COILS	Mini	Climate Control Panel, Headlamp Level Control, Active Cruise Control, Relay Coils, Starter, Front Blower
ECM 1	Mini	Engine Control Module (ECM)
ECM/TCM BATT	Mini	ECM, Transmission Control Module (TCM)
ECM/TCM IGN	Mini	ECM, TCM, Instrument Panel Cluster
EKM/I/P MDL	Mini	Easy Key Module (EKM), Instrument Panel Module (I/P MDL)
EVEN COILS	Mini	Even Ignition Coils, Even Fuel Injectors
FOG LAMP	Mini	Front Fog Lamps
FRT PWR OUTLET	Mini	Front Accessory Power Outlet
FUEL COOL	Mini	Fuel Cooling
HORN	Mini	Horn
HTD WASH/AQS	Mini	Heated Headlamp Washer, Air Quality Sensor
HUD	Mini	Heads-Up Display, Steering Column Switch
I/BEAM	Mini	IntelliBeam Relay
I/P MDL/ALDL	Mini	Instrument Panel Module, Assembly Line Data Link Connector
LIC DIM	Mini	License Plate, Instrument Panel Dimming
LT HI BEAM	Mini	Driver Side High Beam Headlamp
LT LO BEAM	Mini	Driver Side Low Beam Headlamp
LT PRK	Mini	Driver Side Park Lamp/Driver Side Taillamp
ODD COILS	Mini	Odd Ignition Coils, Odd Fuel Injectors
POST O2 SNSR	Mini	Post Oxygen Sensor
PRE O2 SNSR	Mini	Pre Oxygen Sensor, CAM Sensors
RAIN SNSR/TPM	Mini	Rain Sensor, Relay Coil: Headlamp Wash
RT HI BEAM	Mini	Passenger Side High Beam Headlamp
RT LO BEAM	Mini	Passenger Side Low Beam Headlamp
RT PRK	Mini	Passenger Side Park Lamp, Passenger Side Taillamp
SPARE	Mini	Spare
V/CHK	Mini	Instrument Panel Module-Voltage Check
WPR	Mini	Wipe/Wash Module Assembly
WPR SW/VICS	Mini	Rain Sensor, Wiper Switch

Circuit Breakers

Assignment of the circuit breakers in the engine compartment (2008, 2009, 2010, 2011)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
HDLP WASH	Headlamp Washer Motor (Circuit Breaker)

Relays

Assignment of the relays in the engine compartment (2008, 2009, 2010, 2011)

Fuse Data

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Short-Code	Description
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

Passenger Compartment

Fuse Box Location

Both passenger compartment fuse boxes is under the rear seats.

To remove the rear seat cushion, do the following:

Pull up on the front of the cushion to release the
front hooks.
Pull the cushion up and out toward the front of the
vehicle.

Fuse Box Diagram (Driver’s side)

2005-2007

Fuses

Assignment of the fuses in the passenger compartment (Driver’s Side) (2005, 2006, 2007)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
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)

Circuit Breakers

Assignment of the circuit breakers in the passenger compartment (Driver’s Side) (2005, 2006, 2007)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
SEATS C/B	Power Seat

Diode

Assignment of the diode in the passenger compartment (Driver’s Side) (2005, 2006, 2007)

Fuse Data

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Short-Code	Description
SPARE	Spare

Joint Connector

Assignment of the joint connector in the passenger compartment (Driver’s Side) (2005, 2006, 2007)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
JOINT CONNECTOR	Splice Pack (Green)

Relays

Assignment of the relays in the passenger compartment (Driver’s Side) (2005, 2006, 2007)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
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)

2008-2011

Fuses

Assignment of the fuses in the passenger compartment (Driver’s Side) (2008, 2009, 2010, 2011)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
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)

Circuit Breaker

Assignment of the circuit breaker in the passenger compartment (Driver’s Side) (2008, 2009, 2010, 2011)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
PWR SEATS	Power Seats

Diode

Assignment of the diode in the passenger compartment (Driver’s Side) (2008, 2009, 2010, 2011)

Fuse Data

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Short-Code	Description
SPARE	Spare

Joint Connector

Assignment of the joint connector in the passenger compartment (Driver’s Side) (2008, 2009, 2010, 2011)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
J/C	Splice Pack (Green)

Relays

Assignment of the relays in the passenger compartment (Driver’s Side) (2008, 2009, 2010, 2011)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
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

Fuse Box Diagram (Passenger’s side)

2005-2007

Fuses

Assignment of the fuses in the passenger compartment (Passenger’s Side) (2005, 2006, 2007)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
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

Circuit Breaker

Assignment of the circuit breaker in the passenger compartment (Passenger’s Side) (2005, 2006, 2007)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
WINDOW MTRS C/B	Power Window Motors Circuit Breaker

Diode

Assignment of the diode in the passenger compartment (Passenger’s Side) (2005, 2006, 2007)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
TRUNK DIODE	Trunk Release

Joint Connector

Assignment of the joints connector in the passenger compartment (Passenger’s Side) (2005, 2006, 2007)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
JOINT CONNECTOR	Splice Pack (Blue)

Relays

Assignment of the relays in the passenger compartment (Passenger’s Side) (2005, 2006, 2007)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
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)

2008-2011

Fuses

Assignment of the fuses in the passenger compartment (Passenger’s Side) (2008, 2009, 2010, 2011)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
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)

Circuit Breaker

Assignment of the circuit breaker in the passenger compartment (Passenger’s Side) (2008, 2009, 2010, 2011)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
WINDOW MTRS	Power Window Motors Circuit Breaker

Diode

Assignment of the diode in the passenger compartment (Passenger’s Side) (2008, 2009, 2010, 2011)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
TRUNK DIODE	Trunk Release

Joint Connector

Assignment of the joint connector in the passenger compartment (Passenger’s Side) (2008, 2009, 2010, 2011)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
J/C	Splice Pack (Blue)

Relays

Assignment of the relays in the passenger compartment (Passenger’s Side) (2008, 2009, 2010, 2011)

Fuse Data

Full access is available to registered users — log in or register.

Short-Code	Description
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

FAQ

Where are the cigar lighter / power outlet fuses in the Cadillac STS?

They are in the engine compartment fuse box:
2005–2007: “I/P OUTLET” and “OUTLET”
2008–2011: “FRT PWR OUTLET” and “AUX OUTLET”