BYD SONG PLUS DM-I 2021 LHD Service Manual, Wiring Diagrams, Fault Codes & Body Repair

BYD SONG PLUS DM-I 2021 LHD workshop service manual, wiring diagrams, diagnostic manual (fault codes) & body repair manual

Service information for the BYD SONG PLUS DM-I 2021 LHD (vehicle) in one fast website: Workshop Service Manual, Wiring Diagrams, Diagnostic Service Manual & Body Repair Manual. Open it on a phone or a workshop PC.

What is available for the BYD SONG PLUS DM-I 2021 LHD

EditionSteeringManualsUpdated
BYD SONG PLUS DM-I 2021 LHDLeft-hand drive (LHD)Workshop Service Manual
Wiring Diagrams
Diagnostic Service Manual
Body Repair Manual
October 2026

Last updated: October 2026

What's inside the BYD SONG PLUS DM-I 2021 LHD manuals

Workshop Service Manual

1,580 procedures · 6 chapters

  • Overview74Introduction · General Repair Information · Vehicle Information
  • Power512Engine (1.5L) · Engine (1.5Ti) · Transmission · High-voltage System · Thermal Management (1.5L) · Thermal management (1.5Ti) · Acceleration System · Vehicle Control · Power Accessories (1.5L) · Power Accessories (1.5Ti)
  • Chassis181Suspension System · Drive System · Brake system · Steering system
  • Vehicle body182Front and rear sheet metal parts · Windshield · Wiping and Washing · Door · Roof
  • Interior & Exterior Trims345Bumper · Instrument Panel System · Side Mirror · Seat · Door Trims · Other trims
  • Electrical286Supplemental Restraint System · Entry and Immobilizer System · Refueling and 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 · Switch, Wiring Harness and Panel

Wiring Diagrams

562 diagrams · 6 chapters

  • Overview6Drawing Description · Terms and Abbreviations · Common Electrical Symbols · Common Connector Disconnection Method · · Circuit Testing
  • Distribution and Description of Distribution Box3Front Compartment Distribution Box · Instrument Distribution Box
  • Power Supply - Circuit Diagram2Front Compartment Distribution Box - Circuit Diagram · Instrument Distribution Box - Circuit Diagram
  • Ground Point - Circuit Diagram5Engine Harness Ground · Front Compartment Harness Ground Point - Circuit Diagram · Instrument Harness Ground Point - Circuit Diagram · Circuit Diagram of Floor Harness Ground Point · Ceiling and Tailgate Harness Ground Point - Circuit Diagram
  • Harness Layout Diagram477Front Bumper Harness · Front compartment harness · Engine Harness (1.5L) · Engine Harness (1.5T) · Instrument Harness · Floor harness · Ceiling Harness · Rear Bumper Harness · Left Front Door Harness · Right Front Door Harness · Left Rear Door Harness · Right Rear Door Harness · Tailgate Harness · Screenshot of Mathematical Model · Terminal Definition · Terminal Definition (Left Front Door Harness) · Terminal Definition(Right Front Door Harness) · Terminal Definition(Left Rear Door Harness) · Terminal Definition(Right Rear Door Harness) · Terminal Definition(Sub-Instrument Harness) · Terminal Definition(Instrument Panel Harness II) · Terminal Definition(Instrument Panel Harness) · Terminal Definition (Floor Harness) · Terminal Definition (Front Compartment Harness) · Terminal Definition (Tailgate Harness) · Terminal Definition (ceiling Harness) · Terminal Definition(Engine Harness for 1.5L) · Terminal Definition (Front Bumper Harness) · Terminal Definition (Rear Bumper Harness) · Terminal Definition(Engine Harness for 1.5T) · AJB01 · AJB02 · BJA01 · BJA02 · GJB05 · BJG05 · BJD01 · DJB01 · BJD02 · DJB02_1 · BJD02_1 · DJB02 · KJG01 · GJK01 · KJG03 · GJK03 · KJG08 · GJK08 · BJK01 · KJB01 · UJK01 · KJU01 · KJV01 · WJK01 · KJW01 · GJP01 · PJG01 · GJP03 · PJG03 · PJG03_1 · GJP03_1 · KJR01 · RJK01 · GJU02 · UJG02 · VJK01 · Ek01 · Ek02 · Ek03 · Ek04 · Ek05 · Ek08 · Ek10 · Ek11 · Ek12 · Ek13 · Ea01 · Ea02 · Ea03 · Ea04 · Ea05 · Eb01 · Eb05 · Eb03 · Eb06 · Eb08 · Eb09 · Eb11 · Eb12 · Eb13 · Eg02 · Eg07 · Eg08 · Ey02 · Ep01 · GaJG01 · GJGa01 · GaJG02 · GJGa02 · GaJG03 · GJGa03 · GbJG01 · GJGb01 · GJGb02 · GbJG02 · GJK07 · KJG07 · GJT02 · TJG02 · GJK04 · KJG04 · BJG01 · GJB01 · KJT01 · KJY01 · KJY02 · KJZd01 · KJZc01 · TJK01 · YJK01 · YJK02 · ZcJK01 · ZdJK01 · KaJK01 · KJKa01 · BJZa01 · ZaJB01 · BJZb01 · ZbJB01 · GJK02 · KJG02 · KG64(A)_4 · KB46_5 · KG86(A)_1 · BG86(A)_2 · K6M5 · TG64(H) · T03 · T18 · T02(B) · TG92 · T05 · T08 · T06 · T07 · T01 · T02(A) · T04 · T20 · T13 · T13_1 · UG86(H) · U13 · U13_1 · U03(A) · U02(B) · U05 · U08 · U06 · U01 · U07 · U02(A) · U04 · V02(B) · V03 · V01 · V04 · V02(A) · V07 · V07_1 · W02(B) · W03 · W01 · W04 · W02(A) · W07 · W07_1 · GbG43 · Gb48 · GbG72 · GaG75(A) · Ga02 · GaG04 · GaG75(B) · G01 · G22(C) · GB34 · GB34(A) · G22(A) · G22(D) · G99 · G07(Q) · G22(B) · G86(F) · G11 · G07(G) · G46 · G07(A) · G45(A) · G45(B) · G07(E) · G99(B) · G63 · G18 · G13 · G05 · G99(A) · G02 · GB22 · G03(A) · G36 · G82 · G64(G) · G87 · G38(A) · G38(A)_1 · G94(A)_1 · G94(A) · G26 · G94(B)_1 · G94(B) · G38(B) · G38(B)_1 · G86(G) · G07(H) · G07(I) · G07(B) · G07(O) · G07(N) · G07(L) · G07(M) · G07(K) · G07(C) · KG86(E) · KG86(A) · K06(A) · K06(B) · K05(B) · K04(B) · K54(A) · KG41 · K54(B) · K04(D) · KB49 · KB53 · KB50(A) · K18 · K18_1 · K63 · K12 · K22(A) · K22(B) · K68(B) · K68(A) · K43 · K05(D) · K68(C) · K17 · K17_1 · K71 · K53(E) · K05(C) · K53(B) · K53(C) · K53(D) · K70 · K70_1 · K64 · K40 · K04(C) · K07 · K50 · K67 · K04(A) · K05(A) · K11(B) · K11(C) · K11(C)_1 · K11(A) · K11(D) · K14_1(A) · KB76 · K03(A) · KG64(J) · KG64(E) · KG64(D) · KG10 · K02 · K03(B) · K02(A) · K75 · K25(A) · KB46_1 · KB46_3 · KG86(D) · K74(B) · KP08(C) · KP08(D) · K05(F) · KB53_1 · K25(B) · K31 · K05(E) · K08(A) · K57(A) · K08(B) · K57(B) · K02_1 · K02(B) · K01 · K01(A) · K01_1 · B14 · B67 · B04 · B08 · B17 · B07(B) · B02(B) · B06 · B06_1 · B13 · B36 · BG86(B) · B16 · BG42 · B55 · BG23 · BK49(B) · BK49(B)_1 · BK51 · B54 · BK49(A) · BK49(A)_1 · B23 · BG44 · BG44_1 · BG28 · BG82 · BG64(B) · BG64(C) · B03 · B02(A) · B1C · B39 · B39_1 · B1D · B12 · B05 · B05_1 · B07(A) · BG24 · B44_1 · B44_3 · B44_4 · YK20 · YK27(B) · YK36 · YK19(B) · YK19(B)_1 · YK66 · YK21(B) · YK24 · YK24_1 · YK16 · YK30 · YK21(A) · YK19(A) · YK19(A)_1 · YK27(A) · P03(A) · P13 · P02 · PG86(C) · P04(B) · P03(B) · P10(B) · P05 · P10(A) · P01 · P04(A) · P08(B) · P08(A) · P15 · A01(A) · A01(A)_2 · B44_6 · A01(B) · A01(B)_2 · AB30 · A27 · A31 · AB43 · A07 · A12 · A99 · A99_1 · A32 · AB28 · A05(B) · A23 · A20 · A02_1 · A02 · A24 · A25 · A21 · A17 · A15 · A22(A) · A22(B) · A10 · A04(A) · A04(B) · A04(C) · A04(D) · A03(A) · A03(B) · A03(C) · A03(D) · A06 · A08(B) · A09 · A05(A) · A11 · A26 · DB11(A) · DB40 · DB60 · DB11(B) · R06 · RK15(A) · RK15(B) · RK25 · RK15(D) · RK41 · RK15(C) · R07 · A01(A)_1 · A01(B)_1 · B44_6 · A05(B)_1 · AB30 · AB28 · AB43 · A31 · A20_1 · A32 · A07_1 · A25 · A02_1 · A04(D)_1 · A04(C)_1 · A04(B)_1 · A04(A)_1 · A21_1 · A06_1 · A27_1 · A09_1 · A10_1 · A17 · A13_1 · A05(A)_1 · A08(B)_1 · A03(C)_1 · A03(D)_1 · A11_1 · A03(B)_1 · A03(A)_1 · A15_1 · A44_1 · A17 · A26_1 · A12_1 · A23_1 · A99 · A99_1
  • System Circuit Diagram69Engine Electronic Control System · Power Battery and Charging System · High Voltage Drive System · Shift Control · Steering System · Brake System · Assisted Driving · Authorization and Anti-theft · Door Lock · Exterior Lighting System · Interior Lighting System · Instrumentation and Alarm System · Multimedia system · Networking and Communication · Climate control system · Supplemental Restraint System · Electric Tailgate · Sunroof · Window Lift System · Low-voltage Power Supply and Distribution · Wiper and Washer · Seat · Rearview Mirror

Diagnostic Service Manual

1,570 diagnostic topics · 6 chapters

  • Overview11General Service Information
  • Power445Engine · Transmission · High Voltage System · Thermal Management
  • Chassis227Drive System · Brake System · Steering System
  • Body34Wiper and Washer · Roof
  • Interior and Exterior Trim16Rearview Mirror
  • Electrical837Safety and Protection System · Access and Anti-theft System · Refueling and Charging Port Cover Control · Low Voltage Power Supply and Distribution · Instrumentation and Warning Systems · Driver Assistance · Comfort and Convenience System · Media Entertainment · Interior Lighting System · Exterior Lighting System · Air Conditioner · Switch, Wiring Harness and Panel

Body Repair Manual

151 body repair topics · 9 chapters

  • About this manual1About this manual
  • How to Use The Manual3Safety Instructions · Drawing description · Terms
  • Safety and protection5First aid and emergency treatment · Safety instructions · Personal Protection · Site Security and Vehicle Protection
  • Tools, equipment and auxiliary materials30Instructions to content · Protection tools · Operation tools · Operation auxiliary materials
  • Green repair2Description · Applicable Standard
  • How to perform sheet metal painting for vehicle body46Sheet metal repair · Vehicle paint repair · Paint color code of this vehicle model · Quality spot checklist of repair process
  • Vehicle identification information3Description of VIN · Location of vehicle identification number (VIN) · Position and description of vehicle nameplate
  • Vehicle body data and structural information18Overall dimensions · Clearance and flushness · Vehicle body structure · Logo position
  • Replacement of vehicle body sheet metal parts43front compartment · Floor · Side wall · Roof cover · Rear Wall

BYD SONG PLUS DM-I 2021 LHD 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 DM-I 2021 LHD 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 DM-I 2021 LHD 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).

BYD SONG PLUS DM-I 2021 LHD body repair manual

Body and collision repair: body dimensions, panel replacement, sectioning and welding points.

  • Check body and frame dimensions after an accident
  • Replace or section body panels
  • Find welding, cutting and sealing points

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 there a BYD SONG PLUS DM-I 2021 LHD wiring diagram?

Yes. The BYD SONG PLUS DM-I 2021 LHD wiring diagrams are online, with clickable fuses, relays, connectors and pin numbers.

Is the BYD SONG PLUS DM-I 2021 LHD 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?

The BYD SONG PLUS DM-I 2021 LHD is available in the LHD version. 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 DM-I 2021 LHD 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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