EV Diagnostic Solution

See the True Condition
of Every EV, Inside and Out

Beyond battery state of health (SOH),
WESCAN precisely diagnoses motors, EV fault codes (DTC), charging systems, high-voltage circuits, and electrical systems
— a professional, data-driven solution for the core systems of every electric vehicle.
* ICE fault codes (DTC) can also be checked through the diagnostic tool.

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NOTICE

Notices

wecar

위스캔은 현재 현장 30명의 평가사가

최종테스트 진행중입니다 9월중 출시 예정입니다. 국내차종 전기차, 테슬러는 현재도 가능합니다.

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REVIEWS

Customer Reviews

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SIMULATOR

EV Diagnostic Simulator

Technology

Data-driven EV diagnostics built together by Wecar Mobility and Betterwhy.

Wecar Mobility (WECARMOBILITY)

Based on its proprietary WIS (Wecar Inspection Standard), Wecar Mobility provides professional diagnostic solutions officially adopted by major domestic brands including Kia, Porsche, Lexus, and Kolon Certified Used Cars. It is a mobility technology company that accurately diagnoses vehicle condition against standardized criteria using proprietary diagnostic equipment and data analytics.

Wecar Mobility Official Website

Betterwhy (BETTERWHY)

Betterwhy performs precision analysis of voltage, resistance, and other data that is difficult to detect through conventional battery management systems (BMS), enabling early detection of battery anomalies. Using AI and unsupervised learning to analyze cell-level status in real time, Betterwhy is a data technology company that enhances the accuracy and reliability of EV battery diagnostics.

Betterwhy Official Website
Why WESCAN

Four Key Differentiators vs. Conventional Battery Diagnostic Tools

Beyond simple SOH measurement — overwhelming technology across the entire EV system

Korea's Only Universal
Terminal Diagnostics

Universal Standard

Others Limited to expensive dedicated equipment or specific terminals.

WESCAN Korea's only lightweight mobile diagnostic solution that runs perfectly with universal OBD2 terminals and smartphones or tablets.

Full Scan Beyond
Battery Components

Total EV Diagnosis

Others Measures only internal battery pack data (SOH) and stops.

WESCAN 100% comprehensive inspection of ICCU, LDC, VCMS, MCU, and other core EV components.

EV & ICE
Full DTC Diagnosis

Full DTC Coverage

Others Limited fault-code scanning for specific vehicle types or systems only.

WESCAN Full DTC diagnosis for both EV and ICE — powertrain, chassis, body, and communication codes. (Vehicles from 2015 onward)

Charging-Linked Premium
Battery Diagnosis

On-Charging Sync

Others Measures only static data while the vehicle is stationary, reducing accuracy.

WESCAN Automatically syncs dynamic battery stress changes during and immediately after EV charging for precision battery analysis.

EV Inspection

Basic Diagnostic Items for EV Solutions

DTC code scanning and detailed EV inspection scope performed in WESCAN basic diagnosis.

DTC Scan

EV DTC Code Diagnosis

  • BMS (Battery Management System)
  • MCU (Drive Motor)
  • Integrated Power
  • Vehicle Charging
  • Other P-Codes
  • Chassis
  • Body
  • Communication
EV Detail

Detailed EV Item Diagnosis

  • Battery Life (SOH)
  • Insulation Resistance
  • Cell Voltage / Module Temp Deviation
  • LDC Voltage Deviation
  • Inlet Temperature Deviation
  • Motor Temp / Motor Offset Deviation

* ICE fault codes (DTC) can also be checked through the diagnostic tool.

Use Cases

How WESCAN Is Used

Discover how WESCAN's EV diagnostic solution can work for you

  • Dealers & Traders

    Verify vehicle condition during sales and disclose certified used-car status

  • Inspectors & Appraisers

    Used for used-car performance inspection and diagnostic appraisal

  • Consumers

    Verify vehicle condition before purchase

  • Insurance Companies

    Accurate verification including battery replacement after accidents

Dealers
Inspectors
Consumers
Insurers

Everyone diagnoses EVs with WESCAN

Process

WESCAN 5-Step Diagnostic Process

Complex EV diagnostics made simple — just 5 steps in the app

STEP 1

App Login & Engine Start

Log in to the WESCAN app and turn on the vehicle ignition (ENGINE START).

WESCAN 로그인 화면
WESCAN 앱 메인 화면
Premium

How Premium Diagnosis Works

With premium diagnosis: ignition OFF → connect charger → after charging, precision analysis is added.

STEP 1

Enter Premium Diagnosis

Select premium diagnosis to enter the detailed diagnostic screen with ignition OFF.

상세 진단 진입 후 첫 화면
Report

Report Showcase

Switch tabs to view Basic (EV), Basic (ICE), and Premium diagnosis reports page by page.

EV Technical Inspection Report
(EV Technical Inspection Report)

A comprehensive report scanning EV fault codes, battery diagnostics, and key EV data in one pass.

  • Fault Code Diagnosis — Full BMS, MCU, DTC scan (powertrain, chassis, body, communication)
  • Battery Diagnosis — SOH, insulation resistance, cell voltage & module temperature deviation alerts
  • Key Data Diagnosis — LDC voltage deviation, MCU motor/inverter temperature, inlet temperature deviation, etc.
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Automotive DTC Diagnostic Report
(OBD-II Diagnostic Report)

Precise ICE DTC diagnosis for P-code (powertrain), B-code (body), C-code (chassis), and U-code (communication) systems.

  • P-Codes — Full powertrain fault code scan (engine, transmission, etc.)
  • B·C Codes — Body and chassis system DTC diagnosis
  • U-Codes — Vehicle communication network DTC diagnosis
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EV Battery Health Certificate
(EV Battery Health Certificate)

Premium analysis report tracking full cell voltage and module temperature beyond basic diagnosis.

  • Integrated grading with proprietary AI algorithms
  • Cloud BaaS integration — cell balance assessment & voltage deviation visualization
  • Battery stress index and thermal management analysis with real-time data readability

* Basic Diagnosis (EV) report included

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Pricing

Fair & Transparent Pricing

Launch Offer

Diagnostic KIT Purchase

77,000 KRW (VAT incl.)

Free for the first month after purchase

Popular

System Subscription

16,000 KRW/month (VAT incl.)

Annual plan: 143,000 KRW (VAT incl.)

Premium Diagnosis

55,000 KRW/case (VAT incl.)

Advanced AI battery health certificate + basic diagnosis

Contact

Customer Inquiry & Partnership

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Customer Center : 070-7588-0561

APP

App Download

Download the WESCAN app now

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