CAR SPEC SHEET

Buick Cascada Fuse Box: What Each Fuse Does

From the 2019 Buick Cascada owner's manual. 3 fuse boxes listed.

Engine Compartment Fuse Block

FuseCircuit
1Engine control module
2O2 sensor
3Fuel injection/ Ignition system
4Fuel injection/ Ignition system
5–
6Heated mirrors
7Fan control
8O2 sensor/ Powertrain cooling
9Rear window sensor
10Vehicle battery sensor
11Trunk release
12Adaptive headlamps/ Automatic headlamp leveling
13ABS valves
14–
15Engine control module
16Starter
17Transmission control module
18Rear window defogger
19Front power window
20Rear power window
21Rear electrical center
22–
23–
24Right high-beam headlamp
25Left high-beam headlamp
26Front fog lamps
27–
28–
29Electric parking brake
30ABS pump
31–
32Airbag
33Adaptive forward lighting/Automatic headlamp leveling
34Exhaust gas recirculation
35Power windows/Rain sensor/Exterior mirror
36Climate control
37–
38Vacuum pump
39Fuel system control module
40Front windshield washer
41–
42Engine cooling fan
43Windshield wipers
44–
45Engine cooling fan
46–
47Horn
48Engine cooling fan
49Fuel pump
50Headlamp leveling/ Adaptive forward lighting
51–
52–

Source: owner's manual, PDF pages 206, 207.

Instrument Panel Fuse Block

FuseCircuit
1Displays
2Body control module/Exterior lamps
3Body control module/Exterior lamps
4Infotainment system
5Infotainment system/ Instrument cluster
6Power outlet
7Power outlet
8Body control module/Left low-beam headlamp
9Body control module/Right low-beam headlamp
10Body control module/Door locks
11Interior fan
12Driver power seat
13Passenger power seat
14Diagnostic connector
15Airbag
17A/C system
18Service diagnose
19Body control module/Brake lamps/Reverse lamps/Interior lamps
20–
21Instrument panel
22Ignition
23Body control module
24Body control module
25–
26Trunk power outlet accessory
16Trunk lid relay

Source: owner's manual, PDF pages 209, 210.

Rear Compartment Fuse Block

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

FuseCircuit
1Convertible control module/Right power rail
2–
3Rear park assist
4Selective catalytic reduction system
5–
6–
7Power seats
8Convertible control module
9Selective catalytic reduction system
10Selective catalytic reduction system
11Tire pressure monitor/Rear vision camera
12Convertible control module/Reverse lamps
13–
14Rear seat electrical folding
15–
16Rear vision camera/ Convertible control module
17–
18–
19Heated steering wheel
20–
21Heated seats

Source: owner's manual, PDF pages 210, 211.

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.
Report a problem with this page →