CAR SPEC SHEET

Cadillac XTS Fuse Box: What Each Fuse Does

From the 2019 Cadillac XTS owner's manual. 3 fuse boxes listed.

Engine Compartment Fuse Block

FuseCircuit
1Transmission control module
2Engine control module
3A/C clutch
4–
5Engine control module/Ignition
6Front wiper
7–
8Ignition coils – even
9Ignition coils – odd
10Engine control module
11Mass air flow sensor/ Post catalytic converter O2 sensors
12Starter
13Transmission control module/Chassis control module ignition
14Rear heated seat – passenger side
15Rear heated seat – driver side
16–
17Sunshade/Ventilated seats
18Autonet
19–
20–
21Rear power windows
22Sunroof
23Variable effort steering module
24Front power windows
25Retained accessory power
26ABS pump
27Electric parking brake
28Rear window defogger
29Passive entry/Passive start
30Spare
31Heated driver seat
32Stoplamps – center high mounted stoplamp/ Backup-reverse lamps/Interior
33Heated passenger seat
34ABS valves
35Amplifier
36Taillamp – driver side
37Right high-beam headlamp
38Left high-beam headlamp
39Taillamp – passenger side
40Long range radar
41Brake vacuum assist pump
42Cooling fan high speed
43–
44–
45Cooling fan low speed
46Cooling fan control
47Pre-catalytic converter O2 sensor heater/Canister purge solenoid
48Low temperature radiator coolant pump
49Right headlamp LED
50Left headlamp LED
51Horn
52Display/Ignition
53Air quality sensor/ Inside mirror/Rear vision camera
54HVAC/Reflective LED alert display
55Driver and passenger door switches/Outside rearview mirror switch/Mirror memory module
56Windshield washer
57–
58–
59–
60Heated outside mirror
61–
62Front seats massage module
63–
64Spare
65Spare
66Trunk release
67Chassis control module
68–
69Battery voltage sensor
70Canister vent solenoid
71Memory seat module
72Electric power steering
Relay 1A/C clutch
Relay 2Starter
Relay 3–
Relay 4Wiper speed
Relay 5Wiper control
Relay 6–
Relay 7Powertrain
Relay 8–
Relay 9Cooling fan – high speed
Relay 10Cooling fan – low speed
Relay 11Taillamps/Parking lamps
Relay 12–
Relay 13Cooling fan control
Relay 14Low-beam LED headlamps
Relay 15Run/Crank
Relay 16–
Relay 17Rear window and mirror defogger

Source: owner's manual, PDF pages 267, 268, 269.

Instrument Panel Fuse Block

Location: In the instrument panel, on the driver side of the vehicle

FuseCircuit
1Wireless charger module/USB charge
2Body control module 7
3Body control module 5
4Radio
5Infotainment display/ Head-up display/ Instrument cluster
6Power outlet 1
7Power outlet 2
8Body control module 1
9Body control module 4
10Body control module 8
11Front HVAC blower
12Passenger seat
13Driver seat
14Diagnostic link connector
15Airbag AOS
16Glove box
17HVAC controller
18Logistics
19Front camera
20Telematics (OnStar)
21CGM
22Steering wheel controls/Backlight
23Body control module 3
24Body control module 2
25Power steering column
26AC DC inverter
R1Glove box
R2Logistics
R3Retained accessory power

Source: owner's manual, PDF pages 269, 270.

Rear Compartment Fuse Block

Location: On the left side of the trunk behind a cover

FuseCircuit
F01–
F02–
F03–
F04Suspension leveling compressor
F05–
F06–
F07–
F08–/Front courtesy lamps/Footwell, puddle lamps
F09–
F10–
F11–
F12–
F13Spare/MID Power Window
F14–
F15–/Spare
F16–/Video processing module
F17–
F18Semi-active damping system
F19Universal remote system/Rain, light, and humidity sensor
F20–/Shunt
F21Side blind zone alert
F22–
F23All wheel drive
F24–
F25–
F26–
F27–
F28–
F29–
F30External object calculation module
F31Park assist/Lane departure warning/ Lane keep assist
F32–
F33–
F34–
F35–
F36–
F37–
K1–
K2Front courtesy lamps/ Footwell, puddle lamps
K3Suspension leveling compressor
K4–

Source: owner's manual, PDF pages 271, 272.

Listings are copied as text from the manual's fuse tables (AI-assisted; every circuit name was matched against the cited pages 2026-10-18). Fuse layouts can differ by trim and year; check the label on the fuse box cover before replacing a fuse, and always use the same amp rating.

Confirm with your own manual, dipstick or door-jamb label.
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