BYD SEALION 7 EV Service Manual, Wiring Diagrams & Fault Codes

What is available for the BYD SEALION 7 EV

Edition	Steering	Manuals	Updated
BYD SEALION 7 EV RHD	Right-hand drive (RHD)	Workshop Service Manual Wiring Diagrams Diagnostic Service Manual	September 2026

Last updated: September 2026

What's inside the BYD SEALION 7 EV manuals

Workshop Service Manual

1,323 procedures · 9 chapters

Statement on Trial Use of AI Translation1Statement on Trial Use of AI Translation
User manual instructions3Instructions for Using the Service Manual · Applicable Models of the Manual · Revision history
Overview37Introduction · General repair information · Vehicle information
Maintenance67Maintenance information
Power130High-voltage system · Cooling system · Gearshift control mechanism · Acceleration system · Powertrain Mount
Chassis165No-load Status · Front suspension · Rear suspension · Drive system · Tire pressure monitoring system · Brake system · Steering system · Wheel alignment
Vehicle body159Front/rear assembly components · Glass · Hood · Front doors · Rear door · Trunk lid · Charging port cap · Sunroof/fixed-glass roof · Access cover
Interior & exterior trims319Instrument panel system · Auxiliary instrument panel · Rearview mirror · Seat · Door trims · Side wall interior trims · Rear wall trim piece · Headliner and Equipment · Carpet and trim · Front compartment and front wall trims · Front bumper · Rear bumper · Rear wall exterior trims · Side wall exterior trims · Mudguard · Logo and emblem · Other trims and equipment · Thermal and acoustic insulation layer
Electrical442SRS · Entry and immobilizer system · Charging port cap control · Communication converter · Low-voltage power supply and distribution · Instrument panel and display system · Intelligent Monitoring System · Driver assistance · Comfort and convenience system · IVI · Communication and Emergency Call System · Driving reminder system · Interior lighting system · Ambient light system · Exterior light system · Warm air And A/C · Air purification · Wiping and washing · Switches and Panel · Low-voltage wiring harness

Wiring Diagrams

553 diagrams · 7 chapters

AI Translation Trial Statement1AI Translation Trial Statement
Overview7Drawing description · Terms and Abbreviations · Common electrical symbols · Common Connector Disconnection Methods · Common Connector Clamping Structure · Circuit testing · Configuration Information
The distribution and description of distribution box4Dashboard distribution box · Instrument Electrical Center · Rear compartment fuse box
Circuit Diagram of Power Supply3Circuit Diagram of Front Compartment Fuse Box Power Supply · Circuit Diagram of Instrument Panel Fuse Box Power Supply · Circuit diagram of rear compartment fuse box power supply
Ground Point Circuit Diagram4The circuit diagram of front compartment harness ground point · Circuit diagram of instrument harness ground point · Circuit diagram of floor harness ground point · Circuit Diagram of Trunk Lid Wiring Harness GND Points
Harness Layout Diagram473Front Bumper Harness Layout · Front Compartment Harness Layout · Instrument Wiring Harness Layout · Floor Harness Layout · Left Front Door Harness Layout · Right Front Door Harness Layout · Left Rear Door Harness Layout · Right Rear Door Harness Layout · Tailgate Wiring Harness Layout · Rear Bumper Harness Layout · Layout of wiring harness of trailer hitch wire · Definition of Front Bumper Wiring Harness Terminal · Definition of Front Compartment Wiring Harness Terminal · Definition of Instrument Panel Wiring Harness Terminal · Instrument Panel Wiring Harness 2 Terminal Definition · Definition of Floor Wiring Harness Terminal · Definition of Floor Wiring Harness Terminal - 2 · 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 · Definition of trailer hitch wire terminal · Multi-terminal Controller Information · Connector · Ground Point · DB11(A)_1 · DB11(A)_3 · DB11(B)_1 · DB11(B)_3 · DB11(C)_2 · DB11(D)_2 · DB12 · DB40 · DB60(A)_1 · DB60(B)_1 · DB60(C)_1 · DB75 · DB76 · B01(A) · B01(B) · B1C · B1D · B02(A) · B02(B) · B03 · B03(A) · B04 · B05 · B06 · B07 · B07(A) · B08 · B14 · B16 · B16(A) · B17 · B22 · B23 · B27 · B28 · B44_1 · B44_2 · B44_3 · B44_4 · B44_5 · B54(A) · B54(B) · B55 · B55(A) · B55(B) · B55(D) · B67_1 · B70 · B70(A) · B70(B) · B84 · B150 · BA17 · BG22 · BG23 · BG24 · BG28 · BG64(A)_2 · BG64(B) · BG64(C) · BG82 · BG86(B) · BG86(D) · G01 · G01(A) · G02 · G03(A) · G05 · G07 · G07(A) · G07(E) · G07(G) · G07(H) · G11 · G12 · G13 · G17 · G17(A) · G18 · G26 · G30 · G32 · G38 · G38(A) · G38(B) · G39 · G42 · G43 · G45(A) · G45(B) · G46 · G48_1 · G48(A) · G63 · G64(F) · G64(G) · G72(A) · G72(B) · G72(C) · G72(D) · G72(E) · G72(F) · G82 · G87 · G87_1 · G91 · G99(A) · G99(C) · G100 · G101 · G102 · G103 · G104 · G106 · G107 · G109(A) · G116 · G117 · G117(A) · G117(B) · G117(C) · G117(D) · G117(E) · GB29 · GK28 · GP15(A) · Ga41(A) · Ga41(B) · Ga41(C) · Gc09_1 · Gc99 · Gc99(B) · K01 · K02 · K03(A) · K03(B) · K03(C) · K03(D) · K03(E) · K04(A) · K04(B) · K04(C) · K04(D) · K04(E) · K04(F) · K05(A) · K05(B) · K05(C) · K05(D) · K06(A) · K06(B) · K07 · K10_2(A) · K11(A) · K11(B) · K11(C) · K11(D) · K12 · K19(A) · K19(B) · K21 · K22(A) · K22(B) · K22(C) · K22(D) · K25 · K28(A) · K28(B) · K28_1 · K38 · K40 · K50 · K51 · K53(B) · K53(C) · K53(D) · K53(E) · K53(F) · K53(G) · K53(H) · K53(I) · K53(J) · K54(B) · K65 · K66 · K67 · K68 · K68(A) · K68(B) · K70(A) · K76(A) · K76(B) · K90 · Ka08(A) · Ka08(B) · Ka57(A) · Ka57(B) · KB37 · KB46_A · KB46_B · KB46_C · KB46_D · KB46_E · KB49 · KB53 · KB53(C) · KB53(D) · KB53(E) · KB57 · KB76 · KB77 · KG04 · KG07(B) · KG07(C) · KG07(F) · KG07(K) · KG07(L) · KG07(M) · KG10(A) · KG10(B) · KG33 · KG44 · KG48 · KG64(A)_4 · KG64(D) · KG64(E) · KG64(I) · KG64(J) · KG86(A) · KG86(C) · KG86(E) · KG86(F) · KG86(G) · KG86(H) · KG87_1 · KG87_3 · KG110_1 · KP02 · KP03(A) · KP03(B) · KP07 · KP09 · KP10(A) · KP10(B) · KP11 · KP14(C) · KP18(A) · KP18(C) · KP18(D) · KP18 · KT02(A)_1 · KU02(A)_1 · T01 · T02_1 · T03 · T04 · T05 · T06 · T06(A) · T07 · T08 · T10 · TB02 · TG64(H) · TG72(J) · TG72(K) · U01 · U02_1 · U03 · U04 · U05 · U06 · U06(A) · U07 · U08 · U10 · U21(A) · UB02 · UG72(A) · UG72(B) · UG86(I) · UK66 · V01 · V02(A)_1 · V02_1 · V03 · V04 · V04(A) · V05 · V10 · VG72(A) · VG72(B) · W01 · W02(A)_1 · W02_1 · W03 · W04 · W04(A) · W05 · W10 · WG72(A) · WG72(B) · YaK20 · YK17 · YK18 · YK21 · YK24 · YK27(A) · YK27(B) · YK66 · YK87 · R01_1 · R01_3 · R02_1 · R02_3 · R03_1 · R03_3 · R04_1 · R04_3 · RB60(C)_1 · RB60(D)_1 · RK16 · RK21(A) · RK21(B) · RK26 · RK30 · RK41_1 · RK41_2 · RK65 · RK65(A) · C01 · KaJK04 · KJKa04 · KbJK05 · KJKb05 · BaJB01 · BJBa01 · BJD01 · BJD04 · BJG01 · BJK01 · BJK02 · BJK03 · BJK06 · CJK01 · DJB01 · DJB04 · GaJG01 · GcJG01 · GJB01 · GJGa01 · GJGc01 · GJK01 · GJK02 · GJK03 · GJK06 · GJK08 · KaJK01 · KaJK02 · KaJK03 · KcJK01 · KJB01 · KJB02 · KJB03 · KJB06 · KJC01 · KJG01 · KJG02 · KJG03 · KJG06 · KJG08 · KJKa01 · KJKa02 · KJKa03 · KJKc01 · KJR01 · KJR02 · KJT01 · KJT02 · KJT04 · KJU01 · KJU02 · KJU04 · KJV01 · KJW01 · KJY01 · KJY02 · RJK01 · RJK02 · TJK01 · TJK02 · TJK04 · UJK01 · UJK02 · UJK04 · VJK01 · WJK01 · YaJY01 · YcJY01 · YJK01 · YJK02 · YJYa01 · YJYc01 · Ea01 · Ea02 · Eb01 · Eb02 · Eb03 · Eb04 · Eb05 · Eb06 · Eb07 · Eb08 · Eb09 · Eb10 · Eg01 · Eg03 · Eg04 · Eg05 · Ek01 · Ek02 · Ek03 · Ek04 · Ek05 · Ek06 · Ek07 · Ek08 · Ek10 · Ek11 · Ek12 · Ek13 · Ek14 · Ek15 · Ek16 · Ey01 · Ey02 · Ey03 · Ey04 · Fd01 · Fd02(A) · Fd02 · Fr01 · Fr02(A) · Fr02 · Fs01 · Fs02
System Circuit Diagram61Power Battery and Charging System · High Voltage Drive System · High Voltage Cable and Charging Port · Gear Shift Operation · Steering System · Braking System · driver Assistance · Authorization and Anti-theft · Door Lock · Window Lift System · Interior Lighting System · Exterior Lighting System · Instrumentation and Alarm System · Infotainment System · A/C System · Supplemental Restraint System · Wiping and Washing · Low-voltage Power Supply and Distribution · Side Mirror · Driver's Seat · Front Passenger's Seat · Circuit diagram of rear seat · Networking and Communication · Electrical

Diagnostic Service Manual

2,459 diagnostic topics · 5 chapters

AI Translation Trial Statement1AI Translation Trial Statement
Overview11General Repair Information
Power710High-voltage System
Chassis352Brake system · Steering system
Electrical1,385Supplemental restraint system · IVI · Driver Assistance System · Memory system · Instrument Panel Cluster and Warning System · HUD system · Low-voltage Power Supply and Distribution · Smart access system · Lighting system · A/C system · Switches and Panels · Network and Communication

BYD SEALION 7 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 SEALION 7 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 SEALION 7 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 there a BYD SEALION 7 EV wiring diagram?

Yes. The BYD SEALION 7 EV wiring diagrams are online, with clickable fuses, relays, connectors and pin numbers.

Is the BYD SEALION 7 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?

The BYD SEALION 7 EV is available in the RHD 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 SEALION 7 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.

Other BYD models

BYD SEALION 7 EV workshop service manual, wiring diagrams & diagnostic manual (fault codes)