Cadillac XT4 | 2024-2025 | Fuse Box Diagrams and Locations

View Cadillac XT4 fuse box diagrams for 2024–2025 facelifted models with relay locations, fuse assignments, panel layouts, and electrical details. This article covers the facelifted subcompact luxury crossover SUV Cadillac XT4, available from 2024, and includes fuse box diagrams for facelifted Cadillac XT4 2024 and 2025, 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).

What’s Included

Engine Compartment

Fuse Box Location

The power distribution box is located in the engine compartment on the driver side.

Fuse Box Diagram

Fuses

Assignment of the fuses in the engine compartment

Fuse Data

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No.	Type	Description
1	Micro3	Spare
2	Micro2	Aeroshutter
3	Micro3	Spare
4	Micro2	Spare
5	Micro2	Spare
6	—	–
7	Micro3	ECM 2 – Engine Control Module 2 / ECM 3 – Engine Control Module 3
8	Micro3	ECM MAIN – Engine Control Module Main
9	—	–
10	Micro3	OFF ENG
11	Micro3	OFF ENG 2 / OFF ENG 1
12	Micro3	CAC – Charge Air Cooler / ECM – Engine Control Module
13	Micro3	TCM – Transmission Control Module
14	—	–
15	—	–
16	—	–
17	Micro3	A/C Control
18	—	–
19	FMM/MCase	Starter Pinion
20	Micro2	MCU – Microprocessor Control Unit
21	—	–
22	—	–
23	—	–
24	—	–
25	FMM/MCase	Starter Motor
26	Micro3	Spare
27	—	–
28	—	–
29	—	–
30	—	–
31	—	–
32	Micro2	Spare
33	FMM/MCase	Spare
34	Micro2	ELM 5 – Exterior Lighting Module 5
35	Micro2	Power Sounder
36	Micro2	ELM 4 – Exterior Lighting Module 4
37	Micro2	ELM 3 – Exterior Lighting Module 3
38	Micro2	MSM_E – Memory Seat Module
39	Micro2	BSM – Battery State Module
40	Micro3	Front Window Switch
41	Micro3	RDCM BATT2 – Rear Drive Control Module Battery 2
42	Micro3	Headlamp Right and Headlamp Left
43	Micro3	FRT HTD SEAT MDL – Front Heated Seat Module
44	Micro3	RFAM & AFL/AHL/RDCM BAT 2 – Radio Frequency Actuator Module and Adaptive Forward Lighting / Automatic Headlamp Leveling / Rear Drive Control Module Battery 2
45	—	–
46	—	–
47	—	–
48	FMM/MCase	DC DC BAT 2 – Direct Current Direct Current Battery 2
49	—	–
50	FMM/MCase	MTR WDW LIFTER LT – Motor Window Lifter Left
51	—	–
52	FMM/MCase	Passenger Power Seat
53	—	–
54	FMM/MCase	TIM1 – Trailer Interface Module 1
55	FMM/MCase	TIM2 – Trailer Interface Module 2
56	Micro2	Trailer Park Lamps
57	FMM/MCase	RDCM BATT1 – Rear Drive Control Module Battery 1
58	FMM/MCase	Driver Power Seat
59	FMM/MCase	EBCM – Electronic Brake Control Module
60	Micro2	Horn
61	FMM/MCase	Rear Defog
62	FMM/MCase	Front Wiper
63	FMM/MCase	Power Tailgate
64	FMM/MCase	MTR WDW LIFTER RT – Motor Window Lifter Right
65	—	–
66	FMM/MCase	Sunroof
67	FMM/MCase	Trailer Run
68	Micro2	Spare
69	Micro3	Spare
70	—	–
71	—	–
72	Micro2	FTZM – Fuel Tank Zone Module
73	Micro2	Handsfree Closure
74	—	–
75	Micro2	Spare
76	Micro2	Spare
77	Micro2	Spare
78	Micro3	Trailer Stop/Turn Left and Right
79	Micro2	TCM (DC to DC) – Transmission Control Module
80	—	–
81	Micro2	SADS – Semi Active Dampening Suspension
82	—	–
83	Micro2	Washer Pump

Passenger Compartment

Fuse Box Location

The fuse box is located on the driver’s side of the dash panel, behind the lid.

Fuse Box Diagram

Fuses

Assignment of the fuses in the passenger compartment

Fuse Data

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No.	Type	Description
1	FMM/MCase	Blower Motor
2	Micro2	ELM 1 – Exterior Lighting Module 1
3	Micro2	Column Lock
4	Micro2	ELM 2 – Exterior Lighting Module 2
5	Micro2	BCM 2 – Body Control Module 2
6	Micro2	Amplifier
7	Mini	Clock Spring
8	Micro2	DLC – Data Link Connector
9	ATO	BCM 1 – Body Control Module 1 / SIB – Shifter Interface Board
10	ATO	Headliner / Auxiliary Switch
11	ATO	Display and HVAC
12	Micro2	Steering Column Lock
13	ATO	Video Driving Monitoring System (DMS) / Safety 2
14	ATO	RC MISC 3/ECM – Ride Control Miscellaneous 3 / Electronic Control Module
15	Micro2	Rear Wiper
16	FMM/MCase	Cargo APO – Cargo Auxiliary Power Outlet
17	ATO	Sensing Diagnostic Module (SDM) / Safety 1
18	ATO	RC MISC1/MISC2 – Ride Control Miscellaneous 1 / Miscellaneous 2
19	Micro2	Exterior Lighting Module (ELM) TR6
20	ATO	Central Gateway Module (CGM) / Telematics (OnStar)
21	—	–
22	Micro2	European Trailer
23	FMM/MCase	Auxiliary Power Outlet (APO) Cigar
24	Micro2	Wireless Charger
25	Micro2	USB
26	Micro2	ELM 6 – Exterior Lighting Module 6
27	Micro2	VCU AUX JACK – Vehicle Communication Unit Auxiliary Jack
28	Micro2	ELM 7 – Exterior Lighting Module 7
29	—	–
30	—	–
31	Micro2	BCM 3 – Body Control Module 3
32	Micro2	HSWM – Heated Steering Wheel Module
33	—	–
34	Micro2	STEERING CLMN ADJ MDL – Steering Column Adjacent Module
35	FMM/MCase	Amplifier
36	FMM/MCase	DC/DC BATT 2
37	—	–
38	—	–
39	FMM/MCase	BCM 4 – Body Control Module 4
40	—	–

Circuit Breakers

Assignment of the circuit breakers in the passenger compartment

Fuse Data

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No.	Type	Description
CB01	FMX/JCase	Auxiliary Power Outlet (APO) Row 2
CB02	FMX/JCase	Auxiliary Power Outlet (APO) Row 1

FAQ

Where are the cigar lighter / power outlet fuses in the Cadillac XT4?

They are in the instrument panel fuse box: F5 (cargo), F37 (front), F43 (console circuit breaker), and F44 (console).