Find Cadillac CT5 fuse box diagrams for 2025–2026 facelifted models with relay locations, fuse assignments, panel layouts, and electrical system information. This article covers the facelifted Cadillac CT5 , available from 2025 , and includes fuse box diagrams for Cadillac CT5 2025 and 2026 , 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).
The engine compartment fuse block is located on the driver side of the engine compartment.
Assignment of the fuses in the engine compartment
Fuse Data
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No. Description F01 Long Range Radar Front Sensor F02 – F03 Exterior Lighting Module 4 F04 Exterior Lighting Module 7 F05 Spare F06 – F07 Electronic Brake Control Module F08 Washer Pump F09 – F10 – F11 – F12 Horn F13 Front Wiper F14 Spare F15 Spare F16 Exterior Lighting Module 5 F17 Exterior Lighting Module 3 F18 Aero Shutter F19 – F20 – F21 Automatic Light Module / Power Sounder Module F22 Engine Control Module Battery F23 Transmission Control Module F24 Active Engine Mount F25 – F26 Engine Control Module F27 Injectors / Ignition 2 F28 Charged Air Cooler / Not Used F29 Transmission Aux Oil Pump / Transmission Reverse Lock Out F30 Injectors / Ignition 1 F31 Emissions 1 F32 Emissions 2 F33 Starter Solenoid F34 – F35 – F36 Starter Pinion / Not Used F37 – F38 – F39 – F40 – F41 – F42 Water Pump / Not Used F43 – F44 –
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Assignment of the relays in the engine compartment
Fuse Data
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No. Description K47 – K48 Front Wiper Speed / Not Used K49 Front Wiper Control K51 – K52 Engine Control Module K53 Starter Solenoid K54 Starter Pinion / Not Used K55 – K57 AC Clutch K58 –
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The instrument panel fuse block is located at the end of the driver’s side of the instrument panel.
To reach the fuses, take off the end panel by carefully prying near each clip with a plastic tool, starting at the location indicated.
Assignment of the fuses in the passenger compartment
Fuse Data
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No. Description F01 – F02 Heating, Ventilation, and Air Conditioning Blower F03 – F04 – F05 Rain / Theft Deterrent / Over Head Console / Universal Garage Door Opener F06 – F07 – F08 Heated Steering Wheel F09 – F10 Electronic Steering Column Lock 1 F11 – F12 – F13 – F14 – F15 – F16 – F17 – F18 Display / Infotainment F19 Airbag / Automatic Occupant Sensing / Data Link Connection / Wireless Charging Module F20 Power Steering Column Module / Electronic Steering Column Lock 2 F21 Driver Monitoring System / Performance Data Recorder F22 – F23 – F24 – F25 USB F26 – F27 – F28 – F29 – F30 – F31 Headlight Level Manual / Spare F32 – F33 Body Ignition / IP Ignition F34 Exhaust Valve F35 Transmission Control Module Ignition / Engine Control Module Ignition / Shift Ignition / Brake Ignition F36 Electronic Transmission Range Select / Shift Module / Body Control Module 1 / Electric Parking Brake Switch F37 Headlight LH RH F38 Virtual Cockpit Unit F39 Steering Wheel Controls F40 Body Control Module 2 F41 Body Control Module 3 F42 Body Control Module 4
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Assignment of the circuit breakers in the passenger compartment
Fuse Data
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No. Description CB01 Auxiliary Power Outlet 1 CB02 Auxiliary Power Outlet 2
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Assignment of the relays in the passenger compartment
Fuse Data
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No. Description K01 Run After Park / Accessory K02 Run Crank K03 – K04 – K05 –
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The rear compartment fuse block is located behind a cover on the driver side of the rear compartment.
The vehicle may not include all of the fuses, relays, and features shown.
Assignment of the fuses in the luggage compartment
Fuse Data
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No. Description F01 Remote Function Actuator F02 – F03 Driver Heated Seat F04 Fuel Tank Zone Module F05 – F06 – F07 – F08 – F09 – F10 – F11 Canister Vent Solenoid F12 Sunroof F13 – F14 – F15 Passenger Heated Seat F16 Exterior Lighting Module 1 F17 Electronic Suspension Control F18 – F19 – F20 Rear Defog F21 DC to DC Transformer 2 F22 Driver Power Window / Door Handle Switch F23 ADAS Computing Platform / Front Camera Module / Short Range Radar F24 Passenger Power Window / Door Handle Switch F25 – F26 Spare F27 Rear Drive Control Module F28 – F29 – F30 – F31 DC to DC Transformer 1 F32 Transfer Case Electronic Control F33 Central Gateway Module / Side Blind Zone Alert F34 Video Processing Module F35 Hands Free Closure Release F36 Exterior Lighting Module 2 F37 Passenger Memory Seat Module F38 Amplifier F39 Right Front / Right Rear Window F40 – F41 – F42 Amplifier F43 Park Assist Module F44 Driver Memory Seat Module F45 OnStar F46 – F47 Exterior Lighting Module 7 F48 – F49 – F50 Driver Seat F51 Left Front / Left Rear Window F52 Passenger Seat
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Assignment of the relays in the luggage compartment
Fuse Data
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No. Description K53 – K54 – K55 Run
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