The BYD Sealion 7 has been produced since 2024. In this post, you will find a description of the BYD Sealion 7 fuses, including fuse box diagrams, their locations, and photo examples. We will highlight the fuse responsible for the cigarette lighter.
The design of the units and the purpose of the elements within them may differ from that shown and depend on the year of manufacture, region of delivery, and the level of electrical equipment in your vehicle.
All vehicle circuits are provided with fuses to prevent short circuit or overloading. Fuses are mounted in the under-bonnet power distribution box (PDB), the dashboard PDB, and the rear compartment PDB. Fuse labels are included in these PDBs, showing the correspondence of fuses with electrical components.
Location
- Dashboard PDB
- Under-hood PDB
- Rear compartment PDB
Passenger compartment
Inside the vehicle, the fuse box is located at the bottom of the dashboard on the driver’s side. To access it, first remove the left black end cover.
Check the assignment against your diagrams or other technical documentation.
Diagram
Designation
| 1 | 30A Right Front Power Seat (P/SEAT FL) |
| 2 | 30A Right Front Electric Seat (P/SEAT FR) |
| 3 | 20A Rear Left Door Power Window (RL Door) |
| 4 | 20A Rear Right Door Power Window (RR Door) |
| 5 | 7.5A Head-Up Display (HUD) |
| 6 | 5A High Frequency Receiver Module (HFRM) |
| 7 | 7.5A T-BOX (Telematics Control Module) |
| 8 | 15A Infotainment System (Medium) |
| 9 | 20A Infotainment System (Medium) |
| 10 | 5A Brake Light Switch (STOP SW) |
| 11 | 7.5A Combination Switch (CS) |
| 12 | 40A HVAC Blower Motor |
| 13 | 40A Battery Power Supply (BAT) |
| 14 | 15A High Voltage All-in-One Controller (PDC) |
| 15 | 15A High Voltage All-in-One Controller (PDC) |
| 16 | 10A Alcohol Interlock (Alcolock/Alcoguard) |
| 17 | 15A Charging Socket |
| 18 | 20A Front Left Door Power Window (FL Door) |
| 19 | 20A Front Right Door Power Window (FR Door) |
| 20 | 10A OBD Diagnostic Port |
| 21 | 10A Lumbar Support |
| 22 | 7.5A Wireless Charger (CW Charge) |
| 23 | 7.5A Wireless Charger (CW Charge) |
| 24 | 7.5A Wireless Charger (CW Charge) |
| 25 | Spare |
| 26 | Spare |
| 27 | Spare |
| 28 | Spare |
| 29 | Spare |
| 30 | Spare |
| 31 | Spare |
A high-power fuse box may be located near the battery (under the passenger seat in facelifted models).
Engine compartment
Under the hood, the main fuse and relay box is located on the front left. To access, remove the top cover of the unit.
The fuse box itself will look something like this.
Check the assignment with your diagrams on the back of the block cover.
Diagram
Designation
| F1 | 60A PTC3 Heater |
| F2 | Spare |
| F3 | Spare |
| F4 | Spare |
| F5 | Spare |
| F6 | Spare |
| F7 | Spare |
| F8 | Spare |
| F9 | 15A HV All-in-One Controller |
| F10 | Spare |
| F11 | Spare |
| F12 | 7.5A Electric Compressor |
| F13 | Spare |
| F14 | Spare |
| F15 | 5A Brake Light Switch |
| F16 | 60A PTC2 Heater |
| F17 | Spare |
| F18 | 30A PTC1 Heater |
| F19 | Spare |
| F20 | 30A Rear Defroster |
| F21 | 30A Front Wiper |
| F22 | Spare |
| F23 | 15A Backup Power Supply |
| F24 | 15A USB |
| F25 | 10A USB |
| F26 | Spare |
| F27 | 15A Backup Power Supply |
| F28 | 15A USB |
| F29 | Spare |
| F30 | 60A IPB (Integrated Power Brake) |
| F31 | Spare |
| F32 | Spare |
| F33 | 15A HV All-in-One Controller |
| F34 | Spare |
| F35 | 5A Rear Body Controller |
| F36 | Spare |
| F37 | 7.5A ETC (Electronic Throttle Control) |
| F38 | 10A SRS (Supplemental Restraint System / Airbags) |
| F39 | 5A ADAS (Advanced Driver Assistance Systems) |
| F40 | Spare |
| F41 | 5A EPS (Electric Power Steering) |
| F42 | 5A IPB (Integrated Power Brake) |
| F43 | Spare |
| F44 | 60A IPB (Integrated Power Brake) |
| F45 | 40A Blower Motor |
| F46 | Spare |
| F47 | Spare |
| F48 | 10A Rear Wiper |
| F49 | 200A Battery |
| F50 | 70A C-EPS (Column Electric Power Steering) |
| F51 | Spare |
| F52 | Spare |
| F53 | 60A Electronic Cooling Fan |
Fuses 27 and 28, rated at 15A, are responsible for the cigarette lighter.
- R1 – PTC3 Relay — 3rd electric PTC heater relay
- R2 – PTC2 Relay — 2nd electric PTC heater relay
- R3 – FAN LO Relay — Low-speed engine cooling fan relay
- R4 – FAN HI Relay — High-speed engine cooling fan relay
If you have anything to add, please write in the comments.