McLaren 540C 2019 Fuse Box Info
Passenger compartment fuse box location:
The fuse box A (Main fuse box) is located behind a panel in the rear bulkhead, behind the driver seat.
The fuse box B (Secondary fuse box) is located below the dashboard on the passenger’s side.
Luggage compartment fuse box location:
The fuse box is located on top of the battery.
Fuse Box Diagram | Layout
Passenger compartment fuse box A:
| Fuse/Relay N° | Rating | Functions |
| F1 | 60A | Secondary Air Pump |
| F2 | 60A | Secondary Air Pump |
| F3 | - | - |
| F4 | - | - |
| F5 | 30A | Powertrain Chassis Control Unit |
| F6 | 30A | Powertrain Chassis Control Unit |
| F7 | 30A | Starter |
| F8 | 30A | Heated Rear Window and Umbilical |
| F9 | 30A | Audio Amplifier (Tier 3) |
| F10 | 40A | Roof Pump - Spider |
| F11 | 20A | Roof ECU - Spider |
| F12 | - | - |
| F13 | 5A | Powertrain Chassis Control Unit |
| F14 | 5A | Engine Control Module |
| F15 | 10A | Relays |
| F16 | 10A | OBD2 Diagnostics |
| F17 | 3A | Door Locking Switch |
| F18 | 50A | ECU Main Relay Control |
| F19 | - | - |
| F20 | 30A | Seat Driver |
| F21 | 30A | Seat Passenger |
| F22 | 50A | Fuel Pump 1 |
| F23 | 5A | Tilt and Microwave Sensor |
| F24 | 15A | Audio Amplifier (Tier 1 & 2) |
| F25 | 10A | Driver/Passenger Door Latch |
| F26 | 10A | ICPC |
| F27 | 15A | Audio Amplifier (Tier 1 & 2) |
| F28 | - | - |
| F29 | - | - |
| F30 | - | - |
| F31 | 50A | Cooling Fan Left-Hand |
| F32 | 50A | Cooling Fan Right-Hand |
| F33 | - | - |
| F34 | 20A | Wheel Arch Fan |
| F35 | - | - |
| F36 | 20A | Battery Main Relay |
| F37 | 15A | Canister Purge |
| F38 | 15A | Fuel Injection and Ignition - Left-Hand Bank |
| F39 | 15A | Fuel Injection and Ignition - Right-Hand Bank |
| F40 | 10A | Engine Ancillaries |
| R41 | - | Wheel Arch Fan |
| R42 | - | - |
| R43 | - | - |
| R44 | - | - |
| F45 | 10A | Electrical Thermostats, Camshaft Actuators |
| F46 | 3A | Engine Ancillaries |
| F47 | 3A | Engine Ancillaries |
| F48 | - | - |
| F49 | 5A | Starter |
| R50 | - | - |
| R51 | - | Heated Rear Window |
| R52 | - | - |
| R53 | - | Powertrain Chassis Control Unit |
| R54 | - | Powertrain Chassis Control Unit |
| R55 | - | Starter |
| R56 | - | Secondary Air Pump |
| R57 | - | Cooling Fans |
| R58 | - | ECU Main relay Control |
Passenger compartment fuse box B:
| Fuse/Relay N° | Rating | Functions |
| F1 | 20A | Driver’s Door |
| F2 | 20A | Passenger’s Door |
| F3 | 25A | Lights |
| F4 | 35A | Lights |
| F5 | 35A | Body |
| F6 | 35A | Body |
| F7 | 35A | Alarm |
| F8 | 3A | Off Board AM/FM Tuner |
| F9 | 3A | USB AUX Module |
| F10 | 10A | Air conditioning |
| F11 | 3A | Alarm Control Unit |
| F12 | 3A | Tracker |
| F13 | 7.5A | Alarm |
| F14 | 10A | Instrument cluster |
Luggage compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | - | - |
| 2 | - | - |
| 3 | 30A | Air Conditioning - Motor - Control Module |
| 4 | 50A | Secondary Fuse Box Supply |
| 5 | 20A | Electronic Stability Control valves |
| 6 | 40A | Electronic Stability Control motor |
| 7 | 20A | Auxiliary Power Socket - Luggage Compartment |
| 8 | 40A | Secondary fusebox supply |
| 9 | 100A | Electro Hydraulic Power Assisted Steering |
| 10 | 200A | Main Fuse Box Supply |
| 11 | - | - |
