Fuses and relays Buick Encore (2017–2022)

In this article, we provide a detailed overview of the fuse box diagrams for the first-generation Buick Encore (facelift models): 2017, 2018, 2019, 2020, 2021, and 2022 model years.

Fuses F21 and F22 in the interior fuse box protect the cigarette lighter circuit.

Luggage Compartment

Located on the driver's side of the cargo area, behind the trim panel.

Diagram (2018–2022 models)
No.	Description
RLY01	Empty
RLY02	Empty
RLY03	Empty
RLY04	Empty
RLY05	Empty
CB1	Empty
F1	Audio amplifier
F2	Rear drive control module
F3-F17	Empty
S/B01	400W DC-DC converter
S/B02
S/B03	DC/AC inverter
S/B04	Empty
S/B05	Empty

Diagram (2017 model year)
No.	Description
Relays
RLY01	Right cornering lamp
RLY02	Left cornering lamp
Fuses
F1	Empty
F2	Empty
F3	Audio amplifier
F4	Empty
F5	Rear drive control module
F6	Left cornering lamp
F7	Right cornering lamp
F8-F18	Empty
Type “S/B”
S/B01	Empty
S/B02	Empty
S/B03	Empty
S/B04	DC/AC inverter
S/B05	Empty
S/B06	Empty
S/B07	400W DC-DC converter
S/B08	400W DC-DC converter
S/B09	Empty

Engine Compartment

The main fuse block and auxiliary relay block are located adjacent to the battery.

Main Fuse Block

General layout.

Diagram
No.	Description
Relays
Type “U-Micro”
2	Fuel pump relay (2017–2020)
4	Auxiliary heater pump (2017–2020)
Type “HC-Micro”
7	Starter / Starter pinion
10	2018–2020: Starter solenoid
Type “Mini”
1	Run/Crank relay
3	Cooling fan — medium speed
5	Powertrain
8	Cooling fan — low speed
Type “HC-Mini”
6	Cooling fan — high speed
Fuses
Type “Mini”
1	Moonroof
2	Exterior rearview mirror switch / Driver side power window / Rain sensor / Universal garage door opener (2017–2020)
	Exterior rearview mirror switch / Driver side power window / Rain sensor (2021–2022)
3	Canister vent solenoid
4	Empty
5	Electronic Brake Control Module (EBCM) valve
6	Intelligent battery sensor (2017–2021)
7	Electric steering column lock (2017–2020)
8	Transmission Control Module (TCM) / Fuel Injector Control Module (FICM)
9	Automatic Occupant Sensing (AOS) module
10	Headlamp leveling switch and leveling motor Rearview camera Interior rearview mirror
11	Rear wiper
12	Rear window defogger
13	Power lumbar switch
14	Exterior rearview mirror heater
15	Fuel System Control Module (FSCM) battery
16	Heated seat module / Memory module (2017–2020)
17	Trailer Interface Module (TIM) DC-DC converter / Fuel System Control Module (FSCM) RC / Compass module (2017–2022)
	Fuel System Control Module (FSCM) RC (2022)
18	Engine Control Module (ECM) RC / Transmission Control Module (TCM) RC / FICM RC
19	2017–2020: Fuel pump fuse
20	Empty
21	Fan relay (auxiliary BEC)
22	Empty
23	Ignition coil / Injector coil
24	Washer pump
25	Automatic headlamp leveling
26	Engine Management System (EMS) Var 1
27	Auxiliary heater pump
28	Engine Control Module (ECM) powertrain / Ignition 3
29	Engine Control Module (ECM) powertrain / Ignition 1 / Ignition 2
30	Engine Management System (EMS) Var 2
31	Left high-beam headlamp
32	Right high-beam headlamp
33	Engine Control Module (ECM) battery
34	Horn
35	A/C compressor clutch
36	Front fog lamps (2017–2020)
Type “J-Case”
1	Electronic Brake Control Module (EBCM) pump
2	Front wiper
3	HVAC blower motor linear power module
4	IEC RC
5	Empty
7	Starter solenoid
8	Cooling fan — low/medium speed
9	Cooling fan — high speed
10	2017–2021: Electric Vacuum Pump (EVP) system
11	Starter solenoid / Starter pinion

Auxiliary Relay Block

Component assignment for the Buick Encore auxiliary relay block.

Diagram
RLY01	Electric vacuum pump
RLY02	Cooling fan control relay 1
RLY03	Cooling fan control relay 2
RLY04	Trailer or Empty

Passenger Compartment

Located in the instrument panel on the driver's side, behind the storage compartment. 

 
General layout of the interior fuse box.

Diagram
No.	Description
Relays
RLY01	Accessory / Retained accessory power (RAP)
RLY02	Liftgate
RLY03	Empty
RLY04	Blower motor (2022)
RLY05	Logistics mode
Fuses
F1	Body Control Module (BCM) 1
F2	Body Control Module (BCM) 2
F3	Body Control Module (BCM) 3
F4	Body Control Module (BCM) 4
F5	Body Control Module (BCM) 5
F6	Body Control Module (BCM) 6
F7	Body Control Module (BCM) 7
F8	Body Control Module (BCM) 8
F9	Discrete logic ignition switch
F10	Sensing and Diagnostic Module (SDM) battery
F11	Data Link Connector (DLC)
F12	HVAC module ICS
F13	Liftgate relay
F14	Central gateway module
F15	Lane departure warning / GENTEX (2017–2021)
F16	Adaptive Forward Lighting (AFL) module (2017–2020)
F17	Electric steering column lock (2017–2020)
F18	Park assist module Side Blind Zone Alert (SBZA)
F19	Body Control Module (BCM) Regulated voltage control
F20	Clock spring
F21	Accessory 12V power outlet PRNDL Cigarette lighter
F22	Auxiliary 12V power outlet DC center Cigarette lighter fuse
F23	HVAC module ICS (2017–2020)
F24	Empty
F25	OnStar system
F26	Heated steering wheel (2017–2020)
F27	Instrument panel cluster / Auxiliary heater / Auxiliary virtual image display (2017–2021)
	2022: Instrument cluster (2022)
F28	Trailer feed 2 (2017–2020)
F29	Faceplate (2017)
	Infotainment system (2018–2021)
F30	400W DC-DC converter (2017–2020)
F31	Instrument panel cluster module battery
F32	Silverbox audio module / Navigation
F33	Trailer feed 1 (2017–2020)
F34	Passive entry / Passive start
Type “Midi”
M01	2017–2021: Positive Temperature Coefficient (PTC) heater
Type “S/B”
S/B01	Passenger power seat (2017–2021)
	HVAC auxiliary heater 1 (2022)
S/B02	HVAC auxiliary heater 2 (2022)
S/B03	Power windows (Front)
S/B04	Power windows (Rear)
S/B05	Logistics mode relay
S/B06	Driver power seat
S/B07	Empty
S/B08	Trailer Interface Module (TIM) (2017–2020)