BYD Song PLUS EV Service Manual, Wiring Diagrams & Fault Codes

BYD Song PLUS EV workshop service manual, wiring diagrams & diagnostic manual (fault codes)

Service information for the BYD Song PLUS EV (vehicle) in one fast website: Workshop Service Manual, Wiring Diagrams & Diagnostic Service Manual. Open it on a phone or a workshop PC.

Also sold as: BYD Seal U (selected European markets)

What is available for the BYD Song PLUS EV

EditionSteeringManualsUpdated
BYD Song PLUS EVStandardWorkshop Service Manual
Wiring Diagrams
Diagnostic Service Manual
October 2026

Last updated: October 2026

What's inside the BYD Song PLUS EV manuals

Workshop Service Manual

1,178 procedures · 7 chapters

  • Overview29Introduction · General repair information · Vehicle information
  • Maintenance71Maintenance information
  • Power97High-voltage system · Control mechanism · Thermal management · Acceleration system · Universal control · Power accessories
  • Chassis161Suspension system · Drive system · Brake system · Steering system · Wheel alignment
  • Vehicle body182Front and rear sheet metal parts · Windshield · Wiping and washing · Door · Roof
  • Interior & exterior trims360Bumper · Instrument panel system · Rearview mirror · Seat · Door trims · Other trims
  • Electrical278Supplemental restraint system · Entry and immobilizer system · Charging port cap control · Low-voltage power supply and distribution · Instrument and warning system · Driver assistance · Comfort and convenience system · IVI · Interior light system · Exterior light system · A/C · Switches and wiring harnesses

Wiring Diagrams

409 diagrams · 7 chapters

  • AI Translation Trial Statement1AI Translation Trial Statement
  • Overview6Description of diagram · Abbreviations · Common electrical symbols · Common Connector Disconnection Methods · Common Clamping Structure of Connectors · Circuit Detection
  • Distribution and Description of Fuse Box4front compartment fuse box · Instrument panel fuse box · positive fuse box
  • Circuit Diagram of Power Supply2Circuit Diagram of Front Compartment Fuse Box Power Supply · Circuit Diagram of Instrument Panel Fuse Box Power Supply
  • Circuit Diagram of GND Points5Circuit Diagram of Front Compartment Wiring Harness GND Points · Circuit Diagram of Instrument Panel Wiring Harness GND Points · Circuit Diagram of Floor Wiring Harness GND Points · Circuit Diagram of Headliner Wiring Harness GND Points · Circuit Diagram of Trunk Lid Wiring Harness GND Points
  • Layout of Wiring Harnesses351front bumper wiring harness · front compartment wiring harness · instrument panel wiring harness · headliner wiring harness · floor wiring harness · front left door wiring harness · front right door wiring harness · rear left door wiring harness · rear right door wiring harness · trunk lid wiring harness · rear bumper wiring harness · Definition of Front Bumper Wiring Harness Terminal · Definition of Front Compartment Wiring Harness Terminal · Definition of Instrument Panel Wiring Harness Terminal · Definition of Instrument Panel Wiring Harness 2 Terminal · Definition of Instrument Panel Wiring Harness 3 Terminal · Definition of Headliner Wiring Harness Terminal · Definition of Floor Wiring Harness Terminal · Definition of Front Left Door Wiring Harness Terminal · Definition of Front Right Door Wiring Harness Terminal · Definition of Rear Left Door Wiring Harness Terminal · Definition of Rear Right Door Wiring Harness Terminal · Definition of Trunk Lid Wiring Harness Terminal · Definition of Rear Bumper Wiring Harness Terminal · Multi-terminal Controller Information · Connector · GND · DB11(A) · DB11(B) · DB40 · B1C · B1D · B02(A) · B02(B) · B03 · B04 · B05_1 · B06_1 · B07(A) · B07(B) · B08 · B12 · B13 · B14 · B16 · B17 · B23 · B29 · B43 · B44_1 · B44_2 · B44_3 · B44_4 · B55(A) · B55(B) · B56 · B57 · B67 · B69 · B79(A) · B79(B) · B107 · BA17 · BG23 · BG24 · BG28 · BG44 · BG64(A)_4 · BG64(B) · BG64(C) · BG82 · BG86(A)_2 · BG86(B) · BK45(A) · BK45(B) · BK51 · ZaB01(A) · ZbB01(B) · G01(A) · G01(B) · G02 · G03(A) · G05 · G07(A) · G07(B) · G07(C) · G07(E) · G07(F) · G07(G) · G07(H) · G07(I) · G07(K) · G07(L) · G07(O) · G07(Q) · G07(T) · G11 · G13 · G18 · G22 · G26 · G36 · G38(A) · G38(B) · G45(A) · G45(B) · G46 · G63 · G64(G) · G82 · G86(F) · G86(G) · G87_2 · G94(A) · G94(B) · G120 · GB22 · GB34 · Ga93(A)_1 · Ga93(B)_2 · GaG04 · GaG09 · GaG75(A) · GaG75(B) · Gb48(A) · Gb48(B) · GbG16 · GbG32 · GbG43 · GbG72 · GbG91 · P01 · P03(A) · P03(B) · P04(A) · P04(B) · P05 · P05(C) · P10(A) · P10(B) · PG86(C) · K01_1 · K01(A) · K02_1 · K02(A) · K03(A) · K03(B) · K04(A) · K04(B) · K04(C) · K04(D) · K05(A) · K05(B) · K06(A) · K06(B) · K11(A) · K11(B) · K11(C) · K12 · K17_1 · K18_1 · K22(A) · K22(B) · K25 · K28 · K50 · K53(B) · K53(C) · K53(D) · K53(E) · K54(A) · K54(B) · K63(A) · K63(B) · K67 · K68(A) · K68(B) · K68(C) · K74_1 · K87 · KB46_A · KB46_B · KB46_D · KB49(A) · KB49(B) · KB50(A) · KB50(B) · KB53(A) · KB53(B) · KB76 · KG10(A) · KG10(B) · KG33 · KG41 · KG64(A)_4 · KG64(D) · KG64(E) · KG64(J) · KG82 · KG86(A)_1 · KG86(D) · KG86(E) · KG87 · ZcK08(A) · ZcK57(A) · ZdK08(B) · ZdK57(B) · T01 · T02(A) · T02(B) · T03 · T04 · T05 · T06 · T07 · T08 · T13 · T18 · T20 · TG64(H) · TG92 · U01 · U02(A) · U02(B) · U03 · U04 · U05 · U06 · U07 · U08 · U13 · UG86(H) · V01 · V02(A) · V02(B) · V03 · V04 · V07 · W01 · W02(A) · W02(B) · W03 · W04 · W07 · Y30 · YK16 · YK19(A)_1 · YK19(B)_1 · YK20 · YK21(A) · YK21(B) · YK24 · YK27(A) · YK27(B) · YK36 · YK66 · RK15(A) · RK15(B) · RK15(C) · RK15(D) · RK26 · RK41 · BJD01_1 · BJDM1 · BJG01 · BJGM2 · BJK01 · BJZa01 · BJZb01 · DJB01_1 · DJBM1 · GaJG01 · GaJGM4 · GbJG01 · GbJGM1 · GJB01 · GJBM2 · GJGa01 · GJGaM4 · GJGb01 · GJGbM1 · GJK01 · GJK02 · GJK03 · GJKM2 · GJKM4 · GJP01 · GJPM1 · GJTM1 · GJUM1 · KaJK01 · KJB01 · KJG01 · KJG02 · KJG03 · KJGM2 · KJGM4 · KJKa01 · KJR01 · KJT01 · KJU01 · KJV01 · KJW01 · KJY01 · KJYM3 · KJZc01 · KJZd01 · PJG01 · PJGM1 · RJK01 · TJGM1 · TJK01 · UJGM1 · UJK01 · VJK01 · WJK01 · YJK01 · YJKM3 · ZaJB01 · ZbJB01 · ZcJK01 · ZdJK01 · Ea01 · Ea02 · Eb01 · Eb02 · Eb03 · Eb04 · Eb05 · Eb06 · Eb07 · Eb08 · Eb09 · Eb10 · Eg02 · Eg07 · Eg08 · Ek01 · Ek02 · Ek03 · Ek04 · Ek05 · Ek06 · Ek07 · Ek08 · Ek09 · Ek10 · Ek11 · Ep01 · Ey01 · Ey02
  • System Circuit Diagram40High-voltage battery · High-voltage Drive System · HV Cable and Charging Port · Gear Shift Operation · Steering System · Brake system · Driver Assistance · Authorization and Anti-theft · Door Lock · Sunroof · Window Lift System · Interior Lighting System · Exterior Lighting System · Instrument and Warning System · multimedia system · A/C System · Supplemental Restraint System · Wiping and Washing · Low-voltage Power Supply and Distribution · rearview mirror · Driver's Seat · Front Passenger's Seat · Networking and Communication

Diagnostic Service Manual

1,718 diagnostic topics · 6 chapters

  • Overview11General Maintenance Information
  • Power414High-voltage System
  • Chassis333Drive System · Brake System · Steering System
  • Vehicle Body34Wiping and Washing · Roof
  • Interior & Exterior Trims16Side Mirror
  • Electrical910Supplemental Restraint System · Entry and Immobilizer System · Refueling and Charging Port Cover Control · Low-voltage Power Supply and Distribution · Instrument and Warning System · Driver Assistance · Comfort and Convenience System · IVI · Interior Light System · Exterior Light System · A/C · Switch, Wiring Harness and Panel · Network and Communication

BYD Song PLUS EV workshop service manual

Step-by-step repair instructions with pictures, specifications and tightening torques.

  • Remove and install parts in the right order
  • Look up torque values, fluids and capacities
  • Follow safety steps, e.g. high-voltage power-off

High-voltage safety steps for BYD EVs.

BYD Song PLUS EV wiring diagrams

Drawings that show how every wire, connector, fuse, relay and control module in the car is connected.

  • Trace a wire from one part to another
  • Find which fuse or relay feeds a circuit
  • Check connector pin numbers and wire colours

In the diagram viewer every clickable component code is marked in blue: click it to see every linked diagram and where the part sits in the car. How to read BYD wiring diagrams.

BYD Song PLUS EV diagnostic manual (fault codes)

Guides for finding faults: what each fault code (DTC) means and the tests that find the cause.

  • Look up a fault code (DTC) and its causes
  • Follow step-by-step tests with expected values
  • Diagnose a symptom when there is no code

Guide to BYD fault codes (DTC).

Right-hand drive or left-hand drive?

The electronics and mechanics are the same. What changes is where parts are, because the driver sits on the other side.

Who uses it

Independent workshopsRepair BYD cars without waiting for dealer information.
Auto electriciansTrace circuits, fuses, connectors and pin numbers in minutes.
Fleet & taxi mechanicsKeep BYD fleets on the road with the right procedures.
EV techniciansFollow high-voltage safety steps and battery system procedures.

Frequently asked questions

Is the BYD Song PLUS EV the same car as the BYD Seal U?

Yes. The BYD Song PLUS EV is sold under different names by country: BYD Seal U (selected European markets). Use the manual edition that matches the steering side of the car.

Is there a BYD Song PLUS EV wiring diagram?

Yes. The BYD Song PLUS EV wiring diagrams are online, with clickable fuses, relays, connectors and pin numbers.

Is the BYD Song PLUS EV service manual a PDF?

No. The manuals open online in your browser, page by page, with search and links between topics, on a phone or a PC. There are no large files to download.

Which version should I use, RHD or LHD?

Use the version that matches the steering side when tracing wires or doing repairs; fault codes and tests are the same for both.

How much does BYD Song PLUS EV manual access cost?

One plan opens every model and manual on the site: day $5.00 per day, Weekly $25.00 per week, Monthly $50.00 per month, yearly $220.00 per year, 2 year $320.00 per 2 years. No automatic renewal.

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