Fuse Diagram and Relay: Cadillac XT5 2021 Fuses Guide
The detailed fuse diagram and relay information makes it easier to understand the 2021 Cadillac XT5’s complicated electrical system. It also gives you a key way to keep the car in good shape and fix problems. For example, the fuse diagram carefully shows where each fuse goes and what electrical parts it protects. These can be basic functions like lighting and climate control or more complex systems like automated parking and driver aid. In addition, the relay setup makes things even clearer by showing the electrical paths that control important parts of the XT5’s operation. The Cadillac XT5 2021’s fuse and relay layout is more than just a technical guide. It gives owners a full picture of the car’s complicated electrical architecture, giving them the tools they need to fix problems and keep the car running at its best.
2024 Cadillac XT5 Review, Specs, Price, And Mileage (Brochure)
Electrical System
Electrical System Overload
The vehicle has fuses and circuit breakers to protect against an electrical system overload.
When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed. This greatly reduces the chance of circuit overload and fire caused by electrical problems.
Fuses and circuit breakers protect power devices in the vehicle.
Replace a bad fuse with a new one of the identical size and rating.
If there is a problem on the road and a fuse needs to be replaced, the same amperage fuse can be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause the lamps to go on and off, or in some cases to remain off. Have the headlamp wiring checked right away if the lamps go on and off or remain off?
Windshield Wipers
If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart.
Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage damage. Always clear ice and heavy snow from the windshield before using the windshield wipers.
If the overload is caused by an electrical problem and not snow or ice, be sure to get it fixed.
Fuses and Circuit Breakers
The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of damage caused by electrical problems.
Danger
Fuses and circuit breakers are marked with their ampere rating. Do not exceed the specified amperage rating when replacing fuses and circuit breakers. The use of an oversized fuse or circuit breaker can result in a vehicle fire. You and others could be seriously injured or killed.
Warning
Installation or use of fuses that do not meet GM’s original fuse specifications is dangerous. The fuses could fail, and result in a fire. You or others could be injured or killed, and the vehicle could be damaged.
To check a fuse, look at the silver-coloured band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating.
Fuses of the same amperage can be temporarily borrowed from another fuse location if a fuse goes out. Replace the fuse as soon as possible.
Engine Compartment Fuse Block
The underhood fuse block is in the engine compartment, on the driver’s side of the vehicle.
Caution
Do not pull the engine compartment fuse block lever, since it is intended only for service purposes. If pulled, vehicle malfunction may occur.
Caution
Spilling liquid on any electrical component of the vehicle may damage it. Always keep the covers on any electrical component.
To remove the fuse block cover, press the clips on the cover and lift it straight up.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
| Fuses | Usage |
| F1 | Antilock Brake System |
| F2 | Starter 1 |
| F3 | DC-DC Transformer 1 |
| F4 | – |
| F5 | DC-DC Transformer 2 |
| F6 | Amplifier 1 |
| F7 | Front Blower |
| F8 | Starter 3 |
| F9 | – |
| F10 | – |
| F11 | – |
| F12 | Front Wiper |
| F13 | Starter 2 |
| F14 | LED/Automatic Headlamp Leveling |
| F15 | Rear Wiper 1 |
| F16 | – |
| F17 | – |
| F18 | Automatic Headlamp Leveling Module |
| F19 | – |
| F20 | – |
| F21 | – |
| F22 | Electronic Brake Control Module |
| F23 | Parking/Trailer Lamps |
| F24 | Right Trailer Stoplamp/ Turnlamp |
| F25 | Steering Column Lock |
| F26 | – |
| F27 | Left Trailer Stoplamp/ Turnlamp |
| F28 | – |
| F29 | – |
| F30 | Washer Pump |
| F31 | – |
| F32 | – |
| F33 | Fog Lamps |
| F34 | Horn |
| F35 | – |
| F36 | Headlamp High beam – Left |
| F37 | Headlamp high beam – Right |
| F38 | Spare |
| F39 | Transmission Control Module/Battery 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 | Head Up Display/ Reflective Light Auxiliary |
| F44 | Electronic Brake Control Module Electric Brake Booster/Run/Crank |
| F45 | – |
| F46 | – |
| F47 | – |
| F48 | Rear Wiper 2 |
| F49 | Interior Rearview Mirror/ Trailer/Rear Heated Seat Run Crank |
| F50 | Fuel Tank Zone Module Run Crank |
| F51 | Heated Steering Wheel |
| F52 | Air Conditioning Clutch |
| F53 | Coolant Pump |
| F54 | – |
| F55 | – |
| F56 | Spare |
| F57 | Engine Control Module/ Ignition |
| F58 | Transmission Control Module/Ignition |
| F59 | Engine Control Module Battery |
| F60 | – |
| 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 | – |
| F69 | – |
| F70 | – |
| F71 | – |
| F72 | – |
| F73 | – |
| F74 | – |
| F75 | – |
| F76 | – |
| F77 | – |
| Relays | Usage |
| K1 | Starter 1 |
| K2 | Run/Crank |
| K3 | Starter 3 |
| K4 | LED/Automatic Headlamps |
| K5 | – |
| K6 | – |
| K7 | Engine Control Module |
| K8 | Air Conditioning |
| K9 | – |
| K10 | Starter 2 |
Instrument Panel Fuse Block
The instrument panel fuse block is in the center console between the driver and passenger seats. To access the fuses, open the fuse panel door, or remove the panel from the passenger side by pulling it out or seeing your dealer.
To reinstall the door, push the door back into its original location. The vehicle may not be equipped with all of the fuses, relays, and features shown.
| Fuses | Usage |
| F1 | Body Control Module 6 |
| F2 | Diagnostic Link/Central Gateway Module |
| F3 | Electric Steering Column Lock |
| F4 | – |
| F5 | Logistics |
| F6 | Heating, Ventilation, and Air Conditioning/ Humidity Sensor |
| F7 | Body Control Module 3 |
| F8 | Park Aid/Electronic Transmission Range System Hybrid |
| F9 | Right Front Heated Seat |
| F10 | Airbag |
| F11 | – |
| F12 | Amplifier 2 |
| F13 | Body Control Module 7 |
| F14 | Spare/Left Front Heated Seat |
| F15 | Instrument Panel Switch Bank |
| F16 | Sunroof |
| F17 | Body Control Module 1 |
| F18 | Instrument Cluster/Head-up Display |
| F19 | – |
| 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 Aid/Electronic Transmission Range System |
| F26 | Communications Integration Module |
| F27 | Video/Night Vision Module |
| F28 | Heating, Ventilation, and Air Conditioning Display |
| F29 | Radio |
| F30 | Steering Wheel Adjustment Controls |
| F31 | Electronic Brake Control Module Electric Brake Booster |
| 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 | – |
| Circuit Breakers/Minifuses | Usage |
| F40 | – |
| F41 | – |
| F42 | Auxiliary Power Outlet (CB)/Lighter (mini fuse) |
Rear Compartment Fuse Block
The rear compartment fuse block is in the cargo area, on the driver’s side of the vehicle behind the lower trim panel. To open, turn the latch with a flat-bladed tool and pull the trim panel from the edges to fold it down.
The label for this fuse block is in the spare tire area, on the foam under the cargo floor.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
2024 Cadillac XT5 Review, Specs, Price, And Mileage (Brochure)
| Fuses | Usage |
| F1 | – |
| 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 Window Defogger |
| F9 | Left Window |
| F10 | – |
| F11 | Trailer Reverse |
| F12 | – |
| F13 | – |
| F14 | – |
| F15 | – |
| F16 | – |
| F17 | – |
| F18 | Trailer Module/Accessory Power Module/ Rechargeable Energy Storage System Ignition |
| F19 | Ventilated Seats/Left Front Heated Seats Run Crank |
| F20 | – |
| F21 | Trailer Connector |
| F22 | – |
| F23 | – |
| F24 | Passenger Window Switch |
| F25 | – |
| F26 | Trailer Brake |
| F27 | Driver Ventilated Seat/ Lumbar |
| F28 | Passive Entry/Passive Start |
| F29 | – |
| F30 | Canister Vent |
| F31 | Rechargeable Energy Storage System |
| F32 | Heated Mirror |
| F33 | – |
| F34 | Liftgate Module |
| F35 | Fuel System Control Module/Fuel Tank Zone Module |
| F36 | Passenger Ventilated Seat/Lumbar |
| F37 | External Amplifier Hybrid |
| F38 | Window Module |
| F39 | Rear Closure |
| F40 | Memory Seat Module |
| F41 | Automatic Occupancy Sensor |
| F42 | Trailer Battery 2 |
| F43 | Blower Console |
| F44 | – |
| F45 | Liftgate Motor |
| F46 | Rear Heated Seats |
| F47 | – |
| F48 | Glass Break Sensor |
| F49 | – |
| F50 | – |
| F51 | – |
| F52 | Active Dampening System Module |
| F53 | – |
| F54 | External Object Calculating/Side Blind Zone Alert |
| F55 | – |
| F56 | Universal Garage Door Opener/Rain Sensor |
| F57 | Theft Deterrent |
| Circuit Breakers | Usage |
| CB1 | – |
| CB2 | – |
| CB3 | Rear Auxiliary Power Outlet |
| Relays | Usage |
| K1 | – |
| K2 | – |
FAQs
To access the fuse box in a 2021 Cadillac XT5, you typically need to open the driver’s side door and locate the fuse panel cover on the side of the dashboard. Gently pry off the cover to reveal the fuse box.
If your Cadillac XT5’s headlights suddenly stop working, the first thing you should check is the fuse related to the headlights in the fuse box. Refer to the fuse box diagram in your owner’s manual to locate the appropriate fuse.
Replacing a fuse in a Cadillac XT5 typically requires only a pair of needle-nose pliers or fuse pullers. These tools can help you safely remove the blown fuse and install a new one.
Yes, you can visually inspect a fuse to determine if it’s blown. A blown fuse will have a broken or melted metal strip inside. However, some fuses may be difficult to inspect visually, so it’s best to use a multimeter to test them if you’re unsure.
Multiple blown fuses in a Cadillac XT5 could indicate a larger electrical issue. It’s essential to inspect each fuse carefully and look for signs of a short circuit or other underlying problems. If the issue persists, it’s best to consult a professional mechanic.
While Cadillac XT5s are generally reliable, common electrical problems that may require fuse replacement include issues with the power windows, interior lights, or infotainment system. Checking and replacing fuses related to these components can often resolve the issue.
Refer to the fuse box diagram in your Cadillac XT5 owner’s manual to determine which fuse corresponds to the specific electrical component that is malfunctioning. The diagram provides a clear layout of the fuse box and the functions of each fuse.
No, it’s not safe to use a higher-rated fuse to replace a blown one in your Cadillac XT5. Doing so can lead to electrical damage or even a fire hazard. Always replace fuses with ones of the same rating.
If replacing the fuse does not resolve the problem, it may indicate a larger electrical issue that requires professional diagnosis and repair by a certified mechanic or dealership service center.
No, replacing a fuse with one of higher amperage can lead to electrical damage or even fire hazards. Always replace fuses with those of the same amperage rating.
Replacement fuses can be purchased at auto parts stores, hardware stores, or from Cadillac dealerships.
The 2021 Cadillac XT5 typically uses blade-type fuses, which come in various amperages and sizes.
Use needle-nose pliers or a fuse puller to grasp the fuse firmly and pull it straight out of its socket.
Avoid touching the metal contacts of the fuse to prevent electrical shock.
Yes, you can often visually identify a blown fuse by looking for a break or discoloration in the metal strip inside the fuse.
Useful Link:
View full PDF: Cadillac XT5 2021 User Manual | Auto User Guide
2024 Cadillac XT5 Review, Specs, Price, And Mileage (Brochure)