Acura RLX Fuse Box: What Each Fuse Does
From the 2020 Acura RLX owner's manual. 4 fuse boxes listed.
Engine Compartment Fuse Box
Location: Near the brake fluid reserve tank
| Fuse | Amps | Circuit |
|---|---|---|
| 1 | 15 A | IG1A ACG FR |
| 2 | 10 A | IG1A MISS SOL1 |
| 3 | – | − |
| 4 | – | − |
| 5 | 7.5 A | SMART |
| 6 | 7.5 A | IG1B ECU FR |
| 7 | 7.5 A | IG1B OP FR |
| 8 | 15 A | IGP2 |
| 9 | 15 A | DBW |
| 10 | 15 A | IGP |
| 11 | 15 A | IG Coil |
| 12 | 20 A | ACM |
| 13 | 7.5 A | Daytime Running Lights |
| 14 | 10 A | Interior Lights |
| 15 | 10 A | Back Up Radio |
| 16 | 10 A | Back Up |
| 17 | 7.5 A | MG Clutch |
| 18 | 15 A | Front Washer |
| 19 | 7.5 A | Stop |
| 20 | 10 A | Right Headlight High Beam |
| 21 | 10 A | Trunk |
| 22 | 15 A | Small |
| 23 | 7.5 A | Front Fog Light* |
| 24 | 10 A | Left Headlight High Beam |
| 25 | – | − |
| 26 | 15 A | Right Headlight Low Beam |
| 27 | 15 A | Left Headlight Low Beam |
| 28 | 7.5 A | IGP2 Sub |
| 29 | 20 A | TCU MAIN |
| 30 | – | − |
| 31 | 30 A | Wiper |
Source: owner's manual, PDF page 519.
Engine Compartment Fuse Box (near battery)
Location: Near the battery
| Fuse | Amps | Circuit |
|---|---|---|
| 1 | 150 A | Main Fuse |
| 2 | 30 A | Horn & Hazard |
| 2 | 60 A | R/B Main 2 |
| 2 | 30 A | ABS/VSA RLY |
| 2 | 50 A | RFC |
| 2 | 50 A | R/B Main 3 |
| 2 | 60 A | AS F/B Main 2 |
| 2 | 40 A | ABS/VSA Motor |
| 2 | 40 A | Heater Motor |
| 3 | 60 A | R/B Main 1 |
| 3 | 60 A | DR F/B Main 1 |
| 3 | 60 A | AS F/B Main 1 |
| 3 | 30 A | IG Main 1 |
| 3 | 60 A | DR F/B Main 2 |
| 3 | 30 A | IG Main 2 |
| 3 | 40 A | Left Precision All Wheel Steer |
| 3 | 40 A | Rear Defroster |
| 4 | 30 A | ST MG |
| 5 | 30 A | Left Electric Parking Brake |
| 6 | 30 A | Right Electric Parking Brake |
| 7 | 20 A | Injector |
| 8 | 15 A | Hazard |
| 9 | – | − |
| 10 | – | − |
| 11 | 10 A | Horn |
Source: owner's manual, PDF page 520.
Driver’s Side Interior Fuse Box
Location: Under the dashboard
| Fuse | Amps | Circuit |
|---|---|---|
| 1 | 10 A | Driver’s Side Door Lock |
| 2 | 10 A | Passenger’s Side Door Lock |
| 3 | 10 A | Driver’s Door Lock |
| 4 | 10 A | Driver’s Side Door Unlock |
| 5 | 10 A | Passenger’s Side Door Unlock |
| 6 | 10 A | Driver’s Door Unlock |
| 7 | 20 A | Door Lock |
| 8 | – | − |
| 9 | 20 A | Tilt Steering Wheel |
| 10 | 7.5 A | IG1 DR1 |
| 11 | 10 A | Meter |
| 12 | 20 A | IG1 Box |
| 13 | 7.5 A | ACCESSORY |
| 14 | – | − |
| 15 | 20 A | Driver’s Power Seat Sliding |
| 16 | 20 A | Moonroof |
| 17 | 20 A | Rear Driver’s Side Power Window |
| 18 | 20 A | Telescopic Steering Wheel |
| 19 | 20 A | Driver’s Power Window |
| 20 | 20 A | Left e-pretensioner |
| 21 | 20 A | Fuel Pump |
| 22 | – | − |
| 23 | 7.5 A | ST Cut |
| 24 | 7.5 A | IG1 DR2 |
| 25 | 7.5 A | Start DIAG |
| 26 | 7.5 A | A/C |
| 27 | 7.5 A | DRL |
| 28 | 7.5 A | ACC Key Lock |
| 29 | 7.5 A | Driver’s Lumbar Support |
| 30 | 10 A | SMART |
| 31 | – | − |
| 32 | 20 A | Driver’s Power Seat Reclining |
| 33 | 40 A | Right Precision All Wheel Steer |
| 34 | 30 A | IG1 Box |
Source: owner's manual, PDF page 522.
Passenger’s Side Interior Fuse Box
Location: On the lower side panel
| Fuse | Amps | Circuit |
|---|---|---|
| 1 | – | − |
| 2 | 20 A | Front Seat Heaters |
| 3 | 20 A | Rear Passenger’s Side Power Window |
| 4 | 7.5 A | Front Passenger’s Lumbar Support |
| 5 | – | − |
| 6 | – | − |
| 7 | 20 A | Passenger’s Power Seat Sliding |
| 8 | 20 A | Passenger’s Power Seat Reclining |
| 9 | – | − |
| 10 | – | − |
| 11 | 15 A | Fly Start |
| 12 | 20 A | Accessory Power Socket (Console Compartment) |
| 13 | 20 A | Accessory Power Socket (Center Pocket) |
| 14 | 7.5 A | AS ECU |
| 15 | 7.5 A | Glove Box |
| 16 | – | − |
| 17 | – | − |
| 18 | 20 A | Front Passenger’s Power Window |
| 19 | 10 A | SRS1 |
| 20 | 7.5 A | ABS/VSA |
| 21 | – | − |
| 22 | 7.5 A | e-pretensioner |
| 23 | – | − |
| 24 | 7.5 A | SRS2 |
| 25 | 7.5 A | Illumination |
| 26 | 20 A | Right e-pretensioner |
| 27 | – | − |
| 28 | 30 A | Audio AMP |
Source: owner's manual, PDF page 523.
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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