2022 McLaren Super Series 720S Fuses and Fuse Box Guidelines
The 2022 McLaren Super Series 720S’s electrical system is based on its carefully designed fuses and fuse box, which shows a commitment to both cutting-edge technology and flawless dependability. The fuse box protects the car’s complicated electrical system by holding a number of carefully measured fuses that stop electrical overloads and make sure that important parts, like the advanced entertainment system and the complex engine management system, work without any problems. This system shows McLaren’s dedication to engineering excellence by blending in perfectly with the car’s lightning-fast speed and cutting-edge features. It’s not only a high-performance marvel, but also a testament to the brand’s unwavering commitment to quality in the automotive industry. The 2022 McLaren Super Series 720S is a gem in the world of supercars thanks to its fuses and fuse box, which combine technology and dependability in a way that shows how dedicated the brand is to perfection.
Fuses
Fuse replacement
WARNING: Fuses protect the vehicle’s electrical systems. The failure of any fuse will render the system it protects inoperative.
Use replacement fuses of the same rating and type. Incorrect fuse ratings can overload a system and cause a fire or malfunction. Blown fuses should be replaced and no attempt should be made to repair a blown fuse.
NOTE: Before removing a fuse, turn off all electrical equipment and switch off the ignition.
There are three fuse boxes fitted to your McLaren.
| Fuse Box | Location |
| Main fuse box | Behind a panel in the rear bulkhead, behind the left-hand seat. |
| Secondary fuse box | Below the dashboard on the passenger’s side. |
| Battery fuse box | On top of the battery, in the luggage compartment, beneath the luggage compartment cover. |
Main fuse box
Main fuse box access
- To access the main fuse box:
- If a manual seat is fitted, lift the tilt release lever and tilt the left-hand seat backrest forwards
- If an electric seat is fitted, pull the release strap (shown above) and tilt the left-hand seat backrest forwards
- If a race seat is fitted, slide the seat forwards
- Release the two lower clips securing the panel to the bulkhead and remove the panel.
- Refer to the fuse specification to determine which fuse protects the non-functioning electrical system, see Main fuse box fuse specification chart, page 6.20.
NOTE: A label identifying the fuses is attached to the inside of the access panel.
Remove the appropriate fuse and replace it with a fuse of the same value as the original. If in doubt, check the fuse specification chart. - Fit the access panel by inserting the two upper retaining clips in the bulkhead and securing with the two lower clips.
NOTE: If a replacement fuse does not solve the electrical problem, or it fails immediately, contact your McLaren retailer.
Main fuse box fuse specification chart
| No. | Amps | Circuit protected |
| F1 | 60 | Right-Hand Secondary Air Pump |
| F2 | 60 | Left-Hand Secondary Air Pump |
| F3 | 20 | Tonneau Motor Right-Hand (Spider Models Only) |
| F4 | 20 | Tonneau Motor Left-Hand (Spider Models Only) |
| F5 | 30 | Transmission Control Unit |
| F6 | 30 | Transmission Control Unit |
| F7 | 30 | Starter |
| No. | Amps | Circuit protected |
| F8 | 30 | Heated Rear Window |
| F9 | 30 | Audio Amplifier (16 Channel) |
| F10 | 20 | Roof Central ECU (Spider Models Only) |
| F11 | 20 | Roof Central ECU (Spider Models Only) |
| F12 | 20 | Roof Main Motor Left-Hand (Spider Models Only) |
| F13 | 5 | Transmission Control Unit |
| F14 | 5 | Engine Control Module |
| F15 | 10 | Relays |
| F16 | – | – |
| F17 | 3 | Door Locking Switch |
| F18 | 50 | ECU Main Relay Feed |
| F19 | 40 | Fuel Pump |
| No. | Amps | Circuit protected |
| F20 | 30 | Seat Driver’s |
| F21 | 30 | Seat Passenger’s |
| F22 | 20 | Roof Main Motor Right-Hand (Spider Models Only) |
| F23 | 5 | Tilt and Microwave Sensor |
| F24 | 20 | Infotainment Control Unit |
| F25 | 10 | Driver’s/Passenger’s Door Latch |
| F26 | 3 | Auxiliary USB Board |
| F27 | – | – |
| F28 | – | – |
| F29 | – | – |
| F30 | – | – |
| F31 | 50 | Cooling Fan Left-Hand |
| F32 | 50 | Cooling Fan Right-Hand |
| No. | Amps | Circuit protected |
| F33 | – | – |
| F34 | – | – |
| F35 | – | – |
| F36 | 20 | ECM Power Supply |
| F37 | 15 | Canister Purge, Lambda Sensors, Cooling Fan Relay Coil |
| F38 | 15 | Fuel Injection and Ignition – Left-Hand Bank |
| F39 | 15 | Fuel Injection and Ignition – Right-Hand Bank |
| F40 | 10 | Engine Ancillaries |
| R41 | – | – |
| R42 | – | – |
| R43 | – | – |
| R44 | – | – |
| No. | Amps | Circuit protected |
| F45 | 10 | Electrical Thermostats, Camshaft Actuators |
| F46 | 3 | Output Shaft Speed, Even Gear Shaft Speed |
| F47 | 3 | Input Shaft Speed, Odd Gear Shaft Speed |
| F48 | – | – |
| F49 | 5 | Starter |
| R50 | – | – |
| R51 | – | Heated Rear Window |
| R52 | – | – |
| R53 | – | Transmission Control Unit |
| R54 | – | Transmission Control Unit |
| R55 | – | Starter |
| R56 | – | Secondary Air Pump RH |
| No. | Amps | Circuit protected |
| R57 | – | Cooling Fans |
| R58 | – | ECU Main relay Feed |
Secondary fuse box
Secondary fuse box access
- Access to the secondary fuse box is gained by lowering the closing panel below the dashboard on the passenger’s side.
- Remove the two front screws (1).
- Remove the side fixing clip (2).
NOTE: If you wish to lower the closing panel fully, also remove the two clips at the rear (3). - Lower the closing panel, sufficiently to gain access to the fuse box.
NOTE: Do not lower the closing panel further than necessary as it could be damaged.
- Remove the appropriate fuse and replace it with a fuse of the same value as the original. If in doubt, check the fuse specification chart, see Secondary fuse box fuse specification chart, page 6.23.
- Raise the closing panel into position, fit the clip and fit and tighten the two front screws.
Secondary fuse box fuse specification chart
| No. | Amps | Circuit protected |
| F1 | 20 | Driver’s Door |
| F2 | 20 | Passenger’s Door |
| F3 | 25 | Lights |
| F4 | 35 | Lights |
| F5 | 35 | Body |
| F6 | 35 | Body |
| F7 | 35 | Alarm |
| F8 | – | – |
| F9 | – | – |
| F10 | – | – |
| F11 | – | – |
| F12 | – | – |
| F13 | – | – |
| No. | Amps | Circuit protected |
| F14 | 5 | Transmission Control Unit |
| F15 | 10 | Air Conditioning |
| F16 | 3 | Alarm Control Unit |
| F17 | 3 | Tracker |
| F18 | 7.5 | Alarm |
| F19 | 5 | Central Display |
| F20 | 3 | Transmission Control Unit Relays |
| F21 | 15 | Display Control Unit |
| F22 | – | – |
| F23 | 5 | Driver Display |
| F24 | 10 | Development Connector |
| F25 | 10 | OBD2 Diagnostics |
| F26 | – | – |
| No. | Amps | Circuit protected |
| F27 | – | – |
| F28 | – | – |
| R29 | – | Transmission Control Unit |
| R30 | – | Transmission Control Unit |
Battery fuse box
Battery fuse box access
- Open the luggage compartment lid and remove any items stowed inside.
- Remove the 2 quarter turn screws securing the top of the battery access cover.
- Open the top of the battery access cover and disconnect the 2 electrical connectors on the back of the cover.
- Lift the battery access cover upwards, off its locating pegs, and remove.
- Press the 2 catches on the right-hand side of the cover and remove the cover from the fuse box.
- Remove the appropriate fuse and replace it with a fuse of the same value as the original. If in doubt, see Battery fuse box fuse specification chart.
- Engage the left-hand side of the cover with the fuse box, and push the right-hand side down to fully engage the clips.
- Refit the battery access cover, connect the 2 electrical connectors and secure with the 2 screws.
- Stow the contents removed from the luggage compartment.
Battery fuse box fuse specification chart
| No. | Amps | Circuit protected |
| F1 | 30 | Transmission Control Unit |
| F2 | 30 | Transmission Control Unit |
| F3 | 30 | Air Conditioning – Motor – Control Module |
| F4 | 50 | Secondary Fuse Box Supply |
| F5 | 40 | Electronic Stability Control Valves |
| F6 | 40 | Electronic Stability Control Motor |
| F7 | 20 | Auxiliary Power Socket – Luggage Compartment |
| F8 | 40 | Secondary Fuse Box Supply |
| F9 | 100 | Electro-Hydraulic Power Assisted Steering |
| F10 | 200 | Main Fuse Box Supply |
| No. | Amps | Circuit protected |
| F11 | 30 | Secondary Fuse Box Supply |
FAQs
What is the purpose of fuses in the 2022 McLaren 720S?
Fuses protect the electrical systems by interrupting the flow of electricity in the event of an electrical short circuit or excess.
A secondary fuse box may be located in the interior of the vehicle, while the primary fuse box is typically located in the engine compartment.
Depending on the location of the fuse, the fuse box is typically accessed by removing a panel or cover located in the engine compartment or interior.
Replace a blown fuse with a new fuse of the same amperage rating to restore the functionality of the afflicted component.
To avoid electrical issues or damage, it is vital to use the type and amperage of fuse specified in the vehicle’s manual.
Ensure that your fuses are in excellent condition by inspecting them during routine vehicle maintenance.
Fuse boxes are designed to be watertight to prevent water damage.
Yes, you can replace the fuses in your McLaren 720S as long as you follow the instructions in the owner’s manual and take the necessary safety precautions.
Consult a McLaren service center or a qualified technician if you are unable to locate the issue.
Safety is the top priority. Verify that the engine is off and consult the owner’s manual for specific instructions.
Warranty coverage may vary; therefore, it is recommended that you contact your dealership for specific warranty details.
To ensure the appropriate integration of additional electrical accessories without overloading the system, it is best to consult an expert.
Amperage ratings vary based on fuse type and location; the owner’s manual contains the specifics.
Yes, a faulty fuse can disrupt a number of vehicle systems, potentially influencing the vehicle’s performance and safety.
Routinely inspect and maintain your vehicle, adhere to the manufacturer’s recommended service intervals, and manage electrical modifications with care to prevent problems with fuses and the fuse box.
Useful Link
View Full PDF: 2022 McLaren Super Series 720S | Auto User Guide
2022 McLaren Super Series 720S Engine Oil and Fluids Operations