The Cadillac XT6, produced between 2020 and 2022, is a luxury midsize SUV renowned for its spacious interior, advanced technology, and smooth performance. Within its electrical system, the fuse box and relay play crucial roles in ensuring seamless operation.
The fuse box in the Cadillac XT6 houses multiple fuses, each designed to protect specific electrical circuits from overcurrent situations. These circuits power essential components such as the engine control module, lighting systems, entertainment features, and climate control.
Relays, functioning as electrically operated switches, manage high-current circuits in the XT6. They facilitate the activation of critical functions like the starter motor, air conditioning compressor, and power windows. This ensures efficient power distribution and optimal performance across various vehicle systems.
Regular inspection and maintenance of the fuse box and relays are essential to prevent potential electrical failures and ensure uninterrupted operation of the Cadillac XT6. Monitoring fuse conditions and checking relay connections help maintain reliability and contribute to a seamless driving experience in this luxury SUV.
MUST READ: DYI – How to Check Car Fuses?
(2020-2022) Cadillac XT6 fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Cadillac XT6 2020-2022 fuse assignment
- Cigar lighter (power outle) fuses in the Cadillac XT6 are the fuses F37, F42 in the Passenger compartment fuse box, and circuit breaker CB3 (Rear auxiliary power outlet) in the Luggage compartment fuse box.
Year of production: 2020, 2021, 2022
Passenger compartment
It is located in the central console under the glove box.
To access, open the fuse panel door, or remove the panel by pulling it out.
Engine compartment
To remove the cover, press the clips on the cover and lift it straight up.
Fuse Box in the luggage compartment
It is located on the left side of the trunk, behind the lower trim panel.
To access it, remove the center cargo bin then small side bin.
Fuse box diagrams
Passenger compartment
Assignment of the fuses in the Passenger compartment
| № | Description |
|---|---|
| F1 | Body control module 6 |
| F2 | Diagnostic link/ Central gateway module |
| F3 | Electric steering column lock |
| F4 | Not Used |
| F5 | Logistics |
| F6 | Heating, ventilation, and air conditioning |
| F7 | Body control module 3 |
| F8 | Not Used |
| F9 | Right front heated seat |
| F10 | Airbag/Seat belt |
| F11 | 2022: Driver Monitoring System Module |
| F12 | Amplifier 2 |
| F13 | Body control module 7 |
| F14 | 2020-2021: Left front heated seat |
| F15 | Instrument panel switch bank |
| F16 | Sunroof |
| F17 | Body control module 1 |
| F18 | Instrument cluster/ Head up display |
| F19 | Not Used |
| F20 | Rear seat entertainment |
| F21 | Body control module 4 |
| F22 | Infotainment/ USB data/ Aux jack |
| F23 | Body control module 2 |
| F24 | USB charger/ Wireless charging |
| F25 | Park assist/ Electronic shift select |
| F26 | CIM |
| F27 | Video/ Night vision module |
| F28 | Heating, ventilation, and air conditioning display |
| F29 | Radio |
| F30 | 2020-2021: Steering wheel adjustment controls |
| F31 | Electric brake boost |
| F32 | DC AC inverter |
| F33 | Driver power seat |
| F34 | Passenger power seat |
| F35 | Battery IEC 1 feed |
| F36 | Electric power steering |
| F37 | Rear seat entertainment/ USB charge/ Wireless charging module/ Auxiliary power outlet/Lighter |
| F38 | Body control module 8 |
| F39 | 2022: Steering Wheel Adjustment Controls/ Lightbar |
| F40 | Not Used |
| F41 | Not Used |
| F42 | Auxiliary power outlet / Lighter (Circuit Breaker) |
Engine compartment
Assignment of the fuses and relays in the engine compartment
| № | Description |
|---|---|
| F1 | Antilock brake system |
| F2 | Starter 1 |
| F3 | DC DC transformer 1 |
| F4 | Not Used |
| F5 | DC DC transformer 2 |
| F6 | Amplifier 1 |
| F7 | Blower front |
| F8 | Starter 3 |
| F9 | Not Used |
| F10 | Not Used |
| F11 | Not Used |
| F12 | Front wiper |
| F13 | Starter 2 |
| F14 | Not Used |
| F15 | Rear wiper 1 |
| F16 | Not Used |
| F17 | Not Used |
| F18 | Automatic headlamp leveling module |
| F19 | Not Used |
| F20 | Not Used |
| F21 | Not Used |
| F22 | Electronic brake control module |
| F23 | Parking/Trailer lamps |
| F24 | Right trailer stoplamp/Turnlamp |
| F25 | Steering column lock |
| F26 | Not Used |
| F27 | Left trailer stoplamp/ Turnlamp |
| F28 | Not Used |
| F29 | Not Used |
| F30 | Washer pump |
| F31 | Not Used |
| F32 | Headlamp left |
| F33 | Not Used |
| F34 | Horn |
| F35 | Not Used |
| F36 | Not Used |
| F37 | Headlamp right |
| F38 | Not Used |
| F39 | Transmission control module 1 |
| F40 | Left rear bus electrical center/DC DC ignition |
| F41 | Instrument cluster |
| F42 | Heating, ventilation, and air conditioning/ Central gateway module/Run/Crank |
| F43 | 2020: Head-up display 2021-2022: Head-up Display/ Reflective Light Auxiliary |
| F44 | Electronic brake control module electric brake booster/ Run/Crank |
| F45 | Not Used |
| F46 | Not Used |
| F47 | Not Used |
| F48 | Rear wiper 2 |
| F49 | 2020: Interior rearview mirror 2021-2022: Interior Rearview Mirror/ Trailer/ Rear Heated Seats/ Run/Crank |
| F50 | Fuel system control module/ Run/Crank |
| F51 | Heated steering wheel |
| F52 | Folding seats switch |
| F53 | 2021-2022: Engine Coolant Pump |
| F54 | 2020: Coolant pump |
| F55 | Air conditioning clutch |
| F56 | Not Used |
| F57 | Engine control module/Ignition |
| F58 | Transmission control module/Ignition |
| F59 | Engine control module battery |
| F60 | Not Used |
| F61 | O2 sensor 1/ Aeroshutter/Mass air flow sensor |
| F62 | Engine control module – odd |
| F63 | O2 sensor 2 |
| F64 | Engine control module – even |
| F65 | Engine control module powertrain 1 |
| F66 | Engine control module powertrain 2 |
| F67 | Engine control module powertrain 3 |
| F68 | Not Used |
| F69 | Not Used |
| F70 | Not Used |
| F71 | Not Used |
| F72 | Not Used |
| F73 | Not Used |
| F74 | Not Used |
| F75 | Not Used |
| F76 | Not Used |
| F77 | Not Used |
| Relays | |
| K1 | Starter 1 |
| K2 | Run/Crank |
| K3 | Starter 3 |
| K4 | Not Used |
| K5 | Air conditioning |
| K6 | 2020: Coolant pump |
| K7 | Engine control module |
| K8 | Folding seats |
| K9 | Not Used |
| K10 | Starter 2 |
Luggage compartment
Assignment of the fuses and relays in the Rear compartment
| № | Description |
|---|---|
| F1 | Not Used |
| F2 | Trailer battery 1 |
| F3 | Driver seat belt motor |
| F4 | Rear blower |
| F5 | Rear drive control |
| F6 | Passenger seat belt motor |
| F7 | Right window |
| F8 | Rear defogger |
| F9 | Left window |
| F10 | Folding seats 1 |
| F11 | Trailer reverse |
| F12 | Not Used |
| F13 | Not Used |
| F14 | Not Used |
| F15 | Not Used |
| F16 | Not Used |
| F17 | Not Used |
| F18 | 2020-2021: Trailer module 2022: Trailer Module/ External Object Calculation Module 2 Ignition |
| F19 | 2020: Ventilated seats 2021-2022: Ventilated seats / Left front heated seats/ Run/Crank |
| F20 | Not Used |
| F21 | Trailer connector |
| F22 | Not Used |
| F23 | Not Used |
| F24 | Passenger window switch |
| F25 | Not Used |
| F26 | Trailer brake |
| F27 | Not Used |
| F28 | Passive entry/Passive start |
| F29 | 2022: Advanced Driver Assist Map Module |
| F30 | Canister vent |
| F31 | Not Used |
| F32 | Heated mirror |
| F33 | Not Used |
| F34 | Liftgate module |
| F35 | Fuel system control module |
| F36 | Not Used |
| F37 | Not Used |
| F38 | Window module |
| F39 | Not Used |
| F40 | Memory seat module |
| F41 | Automatic occupancy sensor |
| F42 | Trailer battery 2 |
| F43 | Not Used |
| F44 | Third row seats |
| F45 | Liftgate motor |
| F46 | Rear heated seats |
| F47 | Not Used |
| F48 | Glass break sensor |
| F49 | Not Used |
| F50 | Not Used |
| F51 | Not Used |
| F52 | Active dampening system module |
| F53 | 2022: External Object Calculating Module 2B/ Camera Image Processing Module |
| F54 | 2020-2021: External object calculating/ Side blind zone alert 2022: External Object Calculating Module 2A/ Side Blind Zone Alert |
| F55 | Theft deterrent |
| F56 | Universal garage door opener/Rain sensor |
| F57 | Folding seats 2 |
| Circuit Breakers | |
| CB1 | Not Used |
| CB2 | Not Used |
| CB3 | Rear auxiliary power outlet |
| Relays | |
| K1 | Folding seats 1 |
| K2 | Not Used |
Conclusion
For owners and enthusiasts of classic Cadillac XT6 2020-2022, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Cadillac’s craftsmanship and innovation in the automotive industry during that era.
