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Cadillac XT4 (2019-2022) fuses and relays

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The subcompact luxury crossover SUV Cadillac XT4 is available from 2019 to the present. In this article, you will find fuse box diagrams of Cadillac XT4 2019, 2020, 2021, and 2022, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Fuse Layout Cadillac XT4 2019-2022

 

Cigar lighter (power outlet) fuses in the Cadillac XT4 is the fuses F5 (Auxiliary power outlet – cargo), F37 (Auxiliary power outlet – front), F43 (Auxiliary power outlet – console (circuit breaker)), and F44 (Auxiliary power outlet – console) in the Instrument panel fuse box.


Fuse box location

Passenger compartment

The fuse box is located on the driver’s side of the instrument panel behind the cover.

To access, remove the panel, starting at the top. Once clips are disengaged, the tabs along the bottom of the door can be disengaged from the instrument panel to remove the door.

To reinstall the door, place the bottom tabs into the slots, and rotate the door into position, engaging the clips.

Engine compartment

Fuse box diagrams

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2019, 2020, 2021

Instrument panel fuse block

Assignment of the fuses and relays in the instrument panel (2019, 2020, 2021)
Usage
F1Left power window
F2Right power window
F3Not Used
F4DC DC battery 2/1
F5Auxiliary power outlet – cargo
F6Heated seat battery 1
F7Heated seat battery 2
F8Body control module 3
F9Electric parking brake switch
F10Body control module 2 (stop/start)
F11Not Used
F12Not Used
F13Not Used
F14Not Used
F15Transmission control module (stop/start)
F16Amplifier
F17Not Used
F18Video processing module
F19Power steering column
F20Body control module 6
F21Body control module 4
F22Body control module 7
F23Electric steering column lock
F24Airbag
F25Data link connector
F26Not Used
F27Not Used
F28Not Used
F29 Body control module 8
F30 Overhead console
F31 Steering wheel control
F32 Not Used
F33 Heating ventilation/Air conditioning
F34 Central gateway module (CGM)
F35 Heated switch
F36 Charger
F37 Auxiliary power outlet – front
F38 OnStar
F39 Display
F40 Obstacle detection
F41 Body control module 1 (stop/start)
F42 Radio
F43 Auxiliary power outlet – console (circuit breaker)
F44 Auxiliary power outlet – console
Relays
K1Not Used
K2Retained accessory power
K32021: Content theft
K4Not Used
K5Not Used
Engine compartment fuse block

Assignment of the fuses and relays in the engine compartment (2019, 2020, 2021)
Usage
32019-2020: Antilock brake system pump
2021: Electronic brake control module
52019: Not Used
2020-2021: Trailer brake
6Rear closure
7Trailer stop/Turn LH
8Memory seat module
9Pedestrian friendly alert function
10Semi-active damping system
112019: DC-DC Battery 1
2020-2021: DC-DC Battery 1/2
12Rear defogger
13Heated mirror
14Not Used
15Passive entry passive start
16Front wiper
17Passenger power seat
18Power liftgate module
19Driver power seat
21Sunroof
22Rear wiper
232019: Auto headlamp leveling/Canister vent solenoid
2020-2021: Trailer interface module 2
26Transmission control module/Ignition
27Instrument panel body/Ignition
28Rear wiper
292019: Seat ventilation
2020-2021: Trailer ignition
302019-2020: Malfunction indicator lamp
2021: Malfunction indicator lamp start/stop Trailer interface module ignition
32Rear drive control module 1
332019-2020: Front heated seat
34Handsfree/Window switch
352019: Not Used
2020-2021: Diesel exhaust fuel heater
36Fuel module
39Massage
40Steering column lock
41Not Used
43Heated steering wheel
442019: Not Used
2020: Seat ventilation
2021: Seat ventilation / Front heated seat
46Engine control module/Ignition
48Rear drive control module 2
49Heating ventilation/ Air conditioning blower motor
50Not Used
51Not Used
54Not Used
55Not Used
56Starter motor
57Not Used
58Not Used
59High-beam headlamps
602019: Not Used
2020-2021: Trailer interface module 1
61Not Used
62Not Used
63Not Used
65Air conditioning control
67Not Used
68Not Used
69Not Used
70Trailer park lamp
72Starter pinion
75Engine control module
76Powertrain off engine
78Horn
79Washer pump
81Transmission control module/Engine control module
822019: Not Used
2020-2021: Nitrogen oxide sensor
83Ignition coil
84Powertrain on engine
85Shunt
86Shunt
872019: Not Used
2020-2021: Diesel fuel heater 1
88Aeroshutter
892019: Not Used
2020-2021: Selective catalytic reduction module
92Trailer stop/Turn right
932019: Not Used
2020-2021: Automatic headlamp leveling/Canister vent solenoid
952019: Not Used
2020-2021: Smart sensors
962019: Not Used
2020-2021: Diesel fuel heater 2
99Not Used
Relays
4Not Used
20Rear defogger
25Front wiper control
31Run/Crank
37Front wiper speed
42Not Used
64Starter motor
66Powertrain
71Trailer park lamp
73Air conditioning control
80Starter pinion
902019: Not Used
2020-2021: Powertrain sensor
942019: Not Used
2020-2021: Diesel exhaust fuel heater
982019: Not Used
2020-2021: Diesel fuel heater

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2022

Instrument panel fuse block

Assignment of the fuses and relays in the instrument panel fuse box (2022)
Usage
F1Left Power Window
F2Right Power Window
F3
F4Direct Current to Direct Current Converter 2
F5Auxiliary Power Outlet - Cargo
F6Heated Seat Battery 1
F7Heated Seat Battery 2
F8Body Control Module 3 – LED Headlamp Low Beam Right Control Signal, Right Front Turn Lamp Control Signal, Left Front Side Marker and Auxiliary Park, Left Rear Tail/Side Marker Control Signal, Left Daytime Running Lamps Control Signal
F9Electric Park Brake
F10Body Control Module 2 (Stop/Start) – Interior Lamps Control Signal, Door Handle Puddle Lamp (LED), Left Cornering Lamp, Right Cornering Lamp, Interior Lamps Control Signal, Backup Lamp Supply Voltage, License Plate Lamp Control Signal, Rear Closure Cargo Lamp Control Signal, Center High Mounted Stop Lamp LED Lamp Control Signal
F11
F12
F13
F14
F15Transmission Control Module (Stop/ Start)
F16Amplifier
F17
F18Video Processing Module
F19Power Steering Column
F20Body Control Module 6 – LED Backlight Control, Interior Lighting Inadvertent Load Control Signal, Fuel Door Lock Control Signal, LED Backlight Control Signal
F21Body Control Module 4 – LED Headlamp Low Beam Left Control Signal, Right Front Side Marker and Auxiliary Park, Right Rear Tail/ Side Marker Control Signal, Left Rear Stop Lamp Control Signal, Left Rear Stop/Turn Lamp Control Signal, Right DRL Control Signal
F22Body Control Module 7 – Right Rear Stop Lamp Control Signal, Right Rear Stop/ Turn Lamp Control Signal, Left Front Turn Lamp Control Signal, Right Rear Turn Control Signal
F23
F24Airbag
F25Data Link Connector
F26
F27
F28
F29Body Control Module 8 - Internal Driver/Fuel Door Unlock Relay Control Signal, Internal Non-Driver Door Lock Relay Control Signal, Internal All Door Unlock Relay Control Signal
F30Overhead Console
F31Steering Wheel Controls
F32
F33Heating Ventilation and Air Conditioning Control Module
F34Central Gateway Module
F35Heated Seat Switch/Hazard Switch
F36Wireless Charger Module/USB Charge Port
F37
F38OnStar
F39Shifter Interface Board/Center Stack/Head Up Display/ Instrument Panel Cluster/HVAC Display
F40Long Range Radar Sensor/ Ultrasonic Park Assist Module/Camera Module/External Object Calculating Module/ Side Blind Zone Alert Modules/Front Camera Module
F41Body Control Module 1 (Stop/Start) - LED Indicator Lighting Control, Accessory LED Control, Run-Start LED Control, Ambient Lighting LED Control 2, Liftgate Latch Motor Control Signal, Rear Wiper Control Signal, High Beam Lamp Control (Direct Drive), Rear Fog LED Lamp Control Signal, Windshield Washer Pump Motor Control Signal, Run/Crank Relay Control Signal, ECM/TCM ACC Wakeup Control Signal, Left Rear Turn Control Signal, Rear Wiper Wash Pump Control Signal, Brake Pedal Apply Signal
F42Radio
F43Console Auxiliary Power Outlet (Circuit Breaker)
F44Front Console Auxiliary Power Outlet
Relay
K1
K2Retained Accessory Power
K3
K4
K5

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Engine compartment fuse block

Assignment of the fuses and relays in the engine compartment fuse box (2022)
Usage
3Electronic Brake Control Module
5Not Used
6Spare
7Left Trailer Stop/Turn Lamp
8Memory Seat Module, Driver and Passenger
9
10Semi-active Damping System/Spare
11Direct Current to Direct Current Converter 1
12Rear Window Defogger
13Outside Rear View Mirrors Defogger
14
15Passive Entry Passive Start Module
16Front Wiper
17Passenger Power Seat
18Power Liftgate
19Driver Power Seat/ Memory Seat Module/ Driver Seat Massage Control
21Power Sunroof
22
23
26Transmission Control Module/Ignition
27Inside Rear View Mirror, Shifter Interface Board Module Run/Crank, Central Gateway Module Run/Crank, Heating Ventilation and Air Conditioning Control Module Run/Crank ignition 3
28Rear Wiper
29
30Fuel Tank Zone Module Run/Crank, Direct Current to Direct Current Transformer Run/Crank, Electronic Brake Control Module Run/Crank, Instrument Panel Cluster Run/Crank
32Rear Drive Control Module 1
33Front Heated Seat Power 2
34Liftgate Module / Front Window Switches
35
36Fuel Tank Zone Module
39Driver Seat Massage / Passenger Seat Massage
40
41
43Heated Steering Wheel
44Front Heated Seat Power Feed 1 / Front Vented Seats/ Rear Heated Seats
46Engine Control Module Ignition
48Rear Drive Control Module 2
49Heating Ventilation and Air Conditioning Control Blower Motor
50Spare
51Spare
54Spare
55Spare
56Starter Motor
57
58
59High Beam Headlamps
60
61Spare
62Spare
63Spare
65Air Conditioning Clutch
67Spare
68Spare
69
70Trailer Park Lamp
72Starter Pinion
75Engine Control Module Main
76Powertrain Off Engine, Engine Control Module Power Train Ignition 1
78Horn
79Front and Rear Washer Pump
81Engine Control Module Battery/Spare
82
83Ignition Coils
84Canister Purge Solenoid / Step Cam Exhaust Solenoid Cylinder 2 and 3 / Step Cam Intake Cylinder Solenoids / Turbo Bypass Solenoid / Oxygen Sensor (Pre) / O2 Heater / Oxygen Heated Sensor / Mass Airflow / Inlet Air Temperature / Throttle Inlet Absolute Pressure / Coolant Flow Control Valve
85Shunt
86Shunt
87
88Aeroshutter
89
92
93Canister Vent Solenoid
95
96
99
Relays
20Rear Defogger / Outside Rear View Mirrors Defogger
25Front Wiper Control
31Run/ Crank
37Front Wiper Speed
42
64STRTR MTR,
66Powertrain
71Trailer Park Lamps
73Air Conditioning Controls
80Starter Pinion
90
94
98

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