Acura NSX Fuse Box: What Each Fuse Does
From the 2020 Acura NSX owner's manual. 5 fuse boxes listed.
Fuse box A
Location: Near the radiator, under the hood
| Fuse | Amps | Circuit |
|---|---|---|
| 1 | 70 A | EPS |
| 1 | 50 A | Cooling Fan |
| 1 | 40 A | ABS/VSA Motor |
| 1 | 20 A | ABS/VSA FSR |
| 1 | 30 A | AS F/B Main |
| 1 | 200 A | Main Fuse |
| 2 | (50) A | − |
| 2 | 60 A | F/B Main 1 |
| 2 | (60) A | − |
| 2 | (50) A | − |
| 2 | 30 A | Left Electric Parking Brake Motor |
| 2 | 30 A | Right Electric Parking Brake Motor |
| 2 | (40) A | − |
| 2 | 30 A | Heater Motor 2 |
| 2 | 30 A | Heater Motor 1 |
| 2 | (40) A | − |
| 3 | 30 A | E-OP |
| 3 | (30) A | − |
| 3 | 30 A | ADS |
| 3 | (30) A | AMP* |
| 4 | 10 A | Parking Light |
| 5 | 7.5 A | IGPS PCS |
| 6 | 10 A | Left Headlight High Beam |
| 7 | 7.5 A | VFP2 |
| 8 | 10 A | Left Headlight Low Beam |
| 9 | 10 A | Right Headlight High Beam |
| 10 | 10 A | Right Headlight Low Beam |
| 11 | 7.5 A | IGPS Fan |
| 12 | 15 A | FI Main |
| 13 | 20 A | FI Sub |
| 14 | 7.5 A | Back Up |
| 15 | 7.5 A | SBW ECU |
| 16 | 15 A | DBW1 |
| 17 | 15 A | IG Coil |
| 18 | 15 A | DBW2 |
| 19 | 20 A | Parking Light & Headlight Main |
| 20 | 20 A | Rear Defroster |
| 21 | 20 A | Front Washer |
| 22 | 15 A | ISC |
| 23 | – | − |
| 24 | 10 A | ACC/IG2 Main |
| 25 | 10 A | Daytime Running Lights |
| 26 | 10 A | Horn |
| 27 | 7.5 A | Interior Lights |
| 28 | 15 A | IGP2 |
| 29 | 10 A | Audio |
Source: owner's manual, PDF page 459.
Fuse box B
Location: Near the 12-volt battery
| Fuse | Amps | Circuit |
|---|---|---|
| 1 | 60 A | SBW |
| 1 | – | − |
| 1 | 60 A | F/B Main 2 |
| 1 | 30 A | Wiper |
| 1 | 30 A | Passenger Power Window |
| 1 | 30 A | IG Main 1 |
| 1 | 30 A | Driver Power Window |
| 1 | 40 A | ESB |
| 2 | 30 A | IG Main 2 |
| 3 | 20 A | IMA Motor |
| 4 | 7.5 A | BMS |
| 5 | 7.5 A | Stop |
| 6 | 20 A | Turbo W/G |
| 7 | 7.5 A | Hazard |
| 8 | 10 A | A/C W/P |
| 9 | – | − |
| 10 | 7.5 A | AEV |
| 11 | 7.5 A | FI-ECU Backup |
| 12 | – | − |
| 13 | – | − |
| 14 | – | − |
| 15 | – | − |
| 16 | – | − |
| 17 | 10 A | IMA Motor |
Source: owner's manual, PDF page 460.
Driver’s Side Interior Fuse Box
Location: Under the dashboard
| Fuse | Amps | Circuit |
|---|---|---|
| 1 | 10 A | Passenger’s Door Handle |
| 2 | 15 A | Door Lock |
| 3 | 7.5 A | SMART |
| 4 | – | − |
| 5 | 20 A | Front Accessory Power Socket |
| 6 | 20 A | Fuel Pump |
| 7 | 15 A | MISS SOL |
| 8 | 7.5 A | ENG |
| 9 | 7.5 A | VSA/ABS |
| 10 | 10 A | SRS |
| 11 | 10 A | Power System 2 |
| 12 | – | − |
| 13 | 10 A | Power System 1 |
| 14 | 7.5 A | Fuel Lid |
| 15 | (20) A | Driver’s Power Seat Reclining* |
| 16 | (7.5) A | − |
| 17 | (20) A | Seat Heater* |
| 18 | 10 A | Driver’s Door Handle |
| 19 | – | − |
| 20 | 7.5 A | Passenger’s Side Door Unlock |
| 21 | 7.5 A | Daytime Running Lights |
| 22 | 7.5 A | Key Lock |
| 23 | 7.5 A | Air Conditioning |
| 24 | 7.5 A | Feed Back IG1a |
| 25 | 7.5 A | Instrument Panel Lights |
| 26 | (7.5) A | Power Lumbar Support* |
| 27 | 7.5 A | Parking Lights |
| 28 | 15 A | Sub Main |
| 29 | 10 A | Meter |
| 30 | 7.5 A | DR2 |
| 31 | 15 A | Sub Fuel Pump |
| 32 | 10 A | SRS |
| 33 | 7.5 A | Passenger’s Side Door Lock |
| 34 | 7.5 A | Driver’s Door Lock |
| 35 | 7.5 A | Driver’s Door Unlock |
| 36 | (20) A | Driver’s Power Seat Sliding* |
| 37 | 7.5 A | Right Daytime Running Light |
| 38 | 7.5 A | Left Daytime Running Light |
| 39 | 7.5 A | Feed Back IG1b |
| 40 | 7.5 A | ACC |
| 41 | – | − |
| 42 | – | − |
Source: owner's manual, PDF page 461.
Passenger’s Side Interior Fuse Box
Location: Inside the passenger’s side under cover
| Fuse | Amps | Circuit |
|---|---|---|
| a | (20) A | Passenger’s Power Seat Sliding* |
| b | (20) A | Passenger’s Power Seat Reclining* |
| c | (10) A | − |
| d | – | − |
| e | 7.5 A | Wiper |
| f | 7.5 A | EPS |
| g | 7.5 A | DR1 |
| h | 7.5 A | Power System 3 |
Source: owner's manual, PDF page 462.
Rear Side Interior Fuse Box
Location: Near the rear center speaker
| Fuse | Amps | Circuit |
|---|---|---|
| 1 | 20 A | HCA-2 |
| 2 | – | − |
| 3 | – | − |
| 4 | – | − |
| 5 | 20 A | HCA-1 |
| 6 | 20 A | DI-INJ |
| 7 | – | − |
| 8 | 30 A | TCU |
Source: owner's manual, PDF page 462.
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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