The BYD Song Plus was produced in China in 2021, 2022, 2023, 2024, 2025, and 2026. During this time, the model was restyled several times. It is also known as the BYD Seal U and BYD Sealion 6. In this article, you will find a description of the BYD Sealion 6 fuses, including 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.
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.
Diagram
Designation
| F1 | 30A — Main Power Supply. Provides continuous power to the vehicle’s primary electrical circuits. |
| F2 | 60A — Instrument Panel Junction Box. Distributes power to the dashboard electrical circuits and control modules. |
| F3 | Not Used. |
| F4 | 15A — High Voltage Integration. Supplies power to the high-voltage system integration module. |
| F5 | 15A — High Voltage Integration. Additional power circuit for the high-voltage integration module. |
| F6 | Not Used. |
| F7 | Not Used. |
| F8 | Not Used. |
| F9 | 10A — Integrated Thermal Management Module. Controls the thermal management system for the battery and electric powertrain. |
| F10 | 15A — Left Front Combination Lamp. Powers all lighting functions of the left front headlamp assembly. |
| F11 | 15A — Right Front Combination Lamp. Powers all lighting functions of the right front headlamp assembly. |
| F12 | Not Used. |
| F13 | Not Used. |
| F14 | Not Used. |
| F15 | Not Used. |
| F16 | 40A — Main Power Supply. High-current power feed for major vehicle electrical systems. |
| F17 | Not Used. |
| F18 | Not Used. |
| F19 | Not Used. |
| F20 | Not Used. |
| F21 | 30A — Front Windshield Wipers. Supplies power to the front wiper motor. |
| F22 | 30A — Rear Window Defogger. Powers the rear window defroster grid. |
| F23 | 20A — High-Pressure Oil Cooling Pump. Circulates cooling oil within the high-voltage powertrain. |
| F24 | 7.5A — Electric Coolant Pump. Circulates coolant through the vehicle’s cooling system. |
| F25 | 7.5A — Electric A/C Compressor. Supplies power to the electric air conditioning compressor. |
| F26 | 7.5A — USB. Supplies power to the vehicle’s USB ports. |
| F27 | 15A — Backup Power Supply (cigarette lighter). Maintains power to selected circuits when the ignition is off. |
| F28 | Not Used. |
| F29 | Not Used. |
| F30 | 60A — Electronic Stability Control (ESC). Main power supply for the ESC system. |
| F31 | Not Used. |
| F32 | 30A — Trailer Power Supply. Provides electrical power to trailer wiring and accessories. |
| F33 | 5A — Battery Management System (BMS). Supplies power to the battery monitoring and management module. |
| F34 | 15A — Heated Steering Wheel. Powers the steering wheel heating element. |
| F35 | 5A — Rear Body Control Module (Rear BCM). Powers the rear body control module responsible for rear body electrical functions. |
| F36 | 5A — Gear Shift Control Panel. Powers the electronic gear selector control panel. |
| F37 | 7.5A — Electronic Toll Collection (ETC). Supplies power to the ETC transponder system, where equipped. |
| F38 | 10A — Supplemental Restraint System (SRS). Powers the airbag and seat belt pretensioner control system. |
| F39 | 5A — Advanced Driver Assistance System (ADAS). Powers cameras, radar sensors, and driver assistance functions. |
| F40 | 5A — Instrument Cluster. Supplies power to the instrument cluster. |
| F41 | 5A — Electric Power Steering (EPS). Powers the electronic steering control module. |
| F42 | 5A — Electronic Stability Control (ESC). Control circuit for the ESC system. |
| F43 | Not Used. |
| F44 | 60A — Electronic Stability Control (ESC). High-current power supply for the ABS/ESC hydraulic control unit. |
| F45 | 40A — HVAC Blower Motor. Powers the cabin heating and air conditioning blower motor. |
| F46 | Not Used. |
| F47 | Not Used. |
| F48 | 10A — Rear Window Wiper. Supplies power to the rear wiper motor. |
| F49 | 200A — Battery. Main battery fuse protecting the vehicle’s primary power distribution circuit. |
| F50 | 70A — Column Electric Power Steering (CEPS). Main power supply for the column-mounted electric power steering system. |
| F51 | 100A — Left Body Control Module (Left BCM). Supplies power to the left-side body electrical systems. |
| F52 | 100A — Right Body Control Module (Right BCM). Supplies power to the right-side body electrical systems. |
| F53 | 60A — Variable-Speed Cooling Fan. Powers the electronically controlled radiator cooling fan with variable speed operation. |
Fuse 29, rated at 15A, controls the cigarette lighter.
R01 – Main fuel injection relay.
The 250A main power fuse for the high-voltage battery is located next to it in a dedicated service compartment and does not require disassembling the entire battery.
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.
Next, remove the lower protective panel by unscrewing the 2 side screws.
Photo
Diagram
Assignment
| F01 | 30A — Rear Body Domain Controller. Supplies power to the rear body control module responsible for lighting, rear electrical systems, and body functions. |
| F02 | Not Used. |
| F03 | Not Used. |
| F04 | 10A — Diagnostic Port. Supplies power to the OBD-II diagnostic connector for vehicle diagnostics and service tools. |
| F05 | 10A — Wireless Charger. Powers the wireless charging pad for compatible mobile devices. |
| F06 | 5A — RF Receiver Module. Supplies power to the radio frequency receiver used for keyless entry and remote control functions. |
| F07 | 5A — Gear Shift Control Panel. Powers the electronic gear selector control panel. |
| F08 | 20A — Infotainment System. Supplies power to the multimedia head unit, display, and related entertainment functions. |
| F09 | 20A — External Power Amplifier. Powers the premium audio amplifier. |
| F10 | 7.5A — Advanced Driver Assistance System (ADAS). Supplies power to cameras, radar sensors, and driver assistance electronics. |
| F11 | 10A — Combination Switch. Powers the multifunction steering column switch assembly, including turn signals, lighting, and wiper controls. |
| F12 | Not Used. |
| F13 | Not Used. |
| F14 | Not Used. |
| F15 | 10A — Left Rear Combination Lamp. Powers all lighting functions of the left rear lamp assembly. |
| F16 | 10A — Right Rear Combination Lamp. Powers all lighting functions of the right rear lamp assembly. |
| F17 | Not Used. |
| F18 | 5A — Brake Light Switch. Supplies power to the brake pedal switch used to activate the brake lamps and related control systems. |
| F19 | 30A — Rear Body Domain Controller. High-current power supply for the rear body control module and associated electrical systems. |
| F20 | 30A — Rear Body Domain Controller. Additional high-current power supply for the rear body control module and rear vehicle electronics. |
| F21 | 30A — Left Front Power Seat. Supplies power to the electric seat adjustment motors for the driver’s seat. |
| F22 | 30A — Right Front Power Seat. Supplies power to the electric seat adjustment motors for the front passenger seat. |
| F23 | Not Used. |
| F24 | 15A — Rear USB Ports. Supplies power to the rear USB charging and data ports. |
| F25 | Not Used. |
| F26 | Not Used. |
| F27 | Not Used. |
| F28 | Not Used. |
| F29 | Not Used. |
| F30 | Not Used. |
| F31 | Not Used. |
A high-power fuse box may be located near the battery (under the passenger seat in facelifted models).
If you have anything to add, please write in the comments.