Launch X431 PRO3S+ EV Professional EV & Full-System Diagnostic Scanner – Battery Pack Analysis, Topology Mapping, Bi-Directional Control, 40+ Services, CAN FD & DoIP
The Launch X431 PRO3S+ EV is a professional diagnostic platform designed for workshops servicing electric vehicles (EV), new-energy vehicles and conventional passenger cars.
Combining a 10.1-inch Android diagnostic tablet, SmartLink C V2 and dedicated EV diagnostic equipment, the PRO3S+ EV provides high-voltage battery analysis, full-system diagnostics, Topology Mapping, bi-directional active tests, ECU coding, 40+ service functions, CAN FD, DoIP, J2534 and remote diagnostics.
Its main advantage is the ability to diagnose both conventional vehicle systems and increasingly complex EV battery, charging, thermal-management and electric-drive systems from one professional Launch platform.
⭐ Key Features
| EV & Battery Diagnostics | Vehicle Diagnostics | Professional Functions |
|---|---|---|
| High-Voltage Battery Analysis | Full-System Diagnostics | Topology Mapping* |
| Individual Cell / Module Voltage* | Read / Clear DTCs | ECU Coding* |
| Battery SOC / SOH* | Live Data & Graphing | 40+ Service Functions* |
| Battery Temperature* | Bi-Directional Tests* | Guided Functions* |
| Voltage Difference Analysis* | Auto VIN | Secure Gateway Support* |
| BMS Diagnostics | Rapid System Scan | Diagnostic Reports |
| Charging-System Diagnostics* | ECU Information | Fault Guidance* |
| Electric-Drive Diagnostics* | Adaptations / Calibration* | X431 FIX Support* |
*Vehicle, ECU, BMS and software dependent.
⚡ EV & High-Voltage Diagnostics
The PRO3S+ EV provides dedicated diagnostic access to supported electric and new-energy vehicle systems.
| Battery Systems | Electric Drive | EV Support Systems |
|---|---|---|
| Battery Management System | Vehicle Control Unit | On-Board Charger |
| High-Voltage Battery | Motor Control Unit | DC/DC Converter |
| Battery Pack Data | Electric Drive System | Charging System |
| Cell / Module Voltage* | Power Electronics | Thermal Management |
| Battery Temperature* | Regenerative Braking* | Electric A/C |
| SOC / SOH* | Drive-System DTCs | HV Interlock System |
This allows technicians to investigate faults beyond the conventional engine, ABS, airbag and body systems found on ICE vehicles.
🔋 High-Voltage Battery Pack Analysis
One of the key advantages of the PRO3S+ EV is its ability to analyse supported high-voltage battery systems.
| Battery Data | Diagnostic Value |
|---|---|
| SOC – State of Charge | Monitor available battery charge |
| SOH – State of Health* | Evaluate reported battery condition |
| Total Pack Voltage | Analyse overall HV battery voltage |
| Cell / Module Voltage* | Compare individual measurement points |
| Voltage Difference | Identify abnormal voltage deviation |
| Battery Temperature* | Check thermal behaviour |
| Module Temperature* | Compare battery-module temperatures |
| Battery Pack Status | Review BMS operating information |
| Battery DTCs | Diagnose battery-related faults |
| BMS Live Data | Analyse real-time battery parameters |
*Availability depends on what the specific BMS provides diagnostically.
📊 Cell Voltage & Battery Imbalance Analysis
Individual cell/module voltage information can help identify abnormalities that may not be visible from total battery voltage alone.
Technicians can use supported data to investigate:
Weak cells or modules
Abnormal voltage deviation
Battery imbalance
Charging irregularities
Suspected battery degradation
Battery warning messages
Reduced EV range
Battery voltage data should always be interpreted together with SOC, SOH, temperature, current, DTC and manufacturer specifications.
🌡️ Battery Temperature Monitoring
Battery temperature is critical to EV performance and safety.
The PRO3S+ EV can display supported temperature information to assist with diagnosis of:
Uneven battery temperatures
Cooling-system problems
Temperature-sensor faults
Thermal-management problems
Abnormal module temperatures
Charging-related thermal issues
❤️ SOC & SOH Analysis
| SOC – State of Charge | SOH – State of Health |
|---|---|
| Estimated available battery charge | Reported battery-health indicator |
| Useful for charging diagnosis | Useful for battery ageing assessment |
| Helps investigate range issues | Helps investigate capacity loss |
| BMS-calculated value | Manufacturer/BMS-calculated value |
| Supported vehicles | Supported vehicles only |
SOH calculation methods vary by manufacturer and should not be treated as a universal battery-health measurement.
🗺️ Intelligent Topology Mapping
On compatible vehicles, Topology Mapping displays the vehicle's electronic network graphically instead of only showing a conventional ECU list.
Technicians can quickly identify:
Installed control modules
Modules containing DTCs
Communication relationships
Network faults
Gateway structure
Communication failures
Overall vehicle network condition
This is particularly useful on modern EVs containing many interconnected electronic control units.
🔄 Bi-Directional Control / Active Tests
The PRO3S+ EV supports bi-directional control on compatible vehicles, allowing the scanner to command supported components directly.
| EV Applications* | General Vehicle Applications* |
|---|---|
| Electric Coolant Pumps | Cooling Fans |
| EV Thermal Components | Relays |
| Charging Components | Solenoids |
| EV-Specific Actuators | HVAC Actuators |
| Supported HV System Components | Door Locks |
| Electronic Control Components | Windows / Mirrors |
| Manufacturer-Specific Tests | EPB / Lighting |
Active tests help determine whether a fault is related to the component, wiring, control circuit or ECU command.
🧠 ECU Coding & Adaptation
The PRO3S+ EV supports ECU coding on compatible vehicles and modules.
Functions can include:
Replacement-module coding
Variant coding
ECU configuration
Component matching
Adaptations
Initialisation
Personalisation
Supported feature configuration
Coding availability varies according to manufacturer, vehicle and ECU.
🔧 40+ Service & Maintenance Functions
| Maintenance | Adaptation / Relearn | Advanced Service |
|---|---|---|
| Oil Reset | Throttle Adaptation | ABS Bleeding |
| EPB / Brake Reset | Transmission Adaptation | DPF Regeneration |
| BMS Registration | Gear Learning | Injector Coding |
| TPMS Reset | Crankshaft Relearn | Coolant Bleeding |
| SAS Calibration | EGR Adaptation | Suspension Reset |
| AFS / Headlight Reset | Window Initialization | EV / HV Procedures* |
| Sunroof Initialization | Seat Calibration | Manufacturer Functions |
Current software versions may advertise 40+ or 45+ service functions. Individual vehicles do not support every listed function.
🚀 SmartLink C V2 Professional VCI
The included SmartLink C V2 provides advanced vehicle communication capability.
⭐ SmartLink C V2 Features
| Vehicle Protocols | Connectivity | Professional Capability |
|---|---|---|
| CAN 2.0 | Bluetooth / Wireless* | Local Diagnostics |
| CAN FD | Wi-Fi 2.4 / 5 GHz | Super Remote Diagnostics |
| DoIP | USB | J2534 Pass-Thru |
| J2534 | Ethernet | D-PDU |
| D-PDU | RJ45 | Modern Vehicle Support |
| 9–36 V Operation | DB15 / DC-IN | PC-Based OEM Workflows* |
📡 CAN FD & DoIP
CAN FD provides support for newer vehicle architectures using higher-capacity CAN communication.
DoIP (Diagnostics over Internet Protocol) provides high-speed diagnostic communication over automotive Ethernet on supported vehicles.
These protocols are increasingly important for newer EVs and modern vehicle electronic architectures.
💻 J2534 Pass-Thru
SmartLink C V2 supports SAE J2534 Pass-Thru for compatible OEM PC software.
Typical configuration:
Windows PC → OEM Software → SmartLink C V2 → Vehicle
Depending on manufacturer support, J2534 can be used for OEM programming and reflashing workflows.
OEM programming may additionally require:
Manufacturer software
OEM subscription
Internet connection
Programming authorisation
Stable external vehicle power supply
J2534 support does not mean every ECU can be programmed directly from the tablet.
🌐 Remote Diagnostics
SmartLink C V2 supports local and remote diagnostic workflows.
Remote functionality can be useful for:
Specialist diagnostic assistance
Difficult fault diagnosis
Multi-location workshop support
Remote diagnostic sessions
Compatible OEM or specialist workflows
Internet connectivity and compatible remote services are required.
🔐 Secure Gateway Support
The Launch platform supports applicable Secure Gateway (SGW) workflows on compatible vehicles.
Secure access can be required before performing functions such as:
Active tests
Coding
Adaptations
Resets
Service procedures
Separate manufacturer accounts, authentication or service fees may apply.
🚘 Auto VIN, Rapid Scan & Guided Functions
| Auto VIN | Rapid Scan | Guided Functions* |
|---|---|---|
| Automatic VIN Detection | Fast ECU Scanning | Step-by-Step Procedures |
| Vehicle Identification | Full-System Overview | Adaptation Assistance |
| Automatic Software Selection* | DTC Identification | Calibration Guidance |
| Faster Vehicle Entry | Network Diagnosis | Service Procedures |
The platform can move efficiently through:
Vehicle Identification → Full Scan → Topology → Faulty ECU → Detailed Diagnosis
📊 Live Data & Graphical Analysis
EV Live Data
Cell / module voltage*
Battery pack voltage
Battery temperatures*
SOC
SOH*
BMS parameters
Charging information
High-voltage system information
Electric-drive data*
Conventional Vehicle Live Data
Engine RPM
Coolant temperature
Fuel pressure
Boost pressure
Throttle position
O2 / lambda information
Transmission data
ABS wheel speeds
Battery information
Manufacturer-specific PIDs
Graphical display helps technicians compare changing parameters and identify abnormal behaviour.
📄 Professional Diagnostic Reports
Diagnostic reports can contain supported information such as:
VIN and vehicle information
Full-system scan results
ECU status
DTC information
Diagnostic findings
Vehicle health information
Reports are useful for pre-repair inspections, post-repair verification, customer documentation, EV assessment and workshop records.
📱 PRO3S+ EV Tablet Specifications
| Hardware | Specification |
|---|---|
| Product | Launch X431 PRO3S+ EV |
| Operating System | Android 10 |
| Processor | 2.0 GHz Quad-Core |
| RAM | 4 GB |
| Storage | 64 GB |
| Display | 10.1-inch Touchscreen |
| Resolution | 1280 × 800 |
| Wi-Fi | 2.4 GHz / 5 GHz |
| VCI | SmartLink C V2 |
📈 Diagnostic Specifications
| Diagnostics | EV Capability | Communication |
|---|---|---|
| Full-System Diagnostics | EV Diagnostics | CAN 2.0 |
| Read / Clear DTCs | Battery Pack Diagnostics | CAN FD |
| Live Data | Cell Voltage Analysis* | DoIP |
| Active Tests* | Battery Temperature* | J2534 |
| ECU Coding* | SOC / SOH* | D-PDU |
| Topology Mapping* | BMS Diagnostics | Remote Diagnostics |
| Auto VIN* | HV System Diagnostics* | Secure Gateway* |
| 40+ / 45+ Services* | EV Service Functions* | Guided Functions* |
🖥️ SmartLink C V2 Specifications
| Parameter | Specification |
|---|---|
| Product | Launch SmartLink C V2 |
| Display | 3.97-inch TFT |
| Resolution | 320 × 480 |
| Memory | 256 MB |
| Storage | 8 GB |
| Wi-Fi | 2.4 / 5 GHz |
| Operating Voltage | DC 9–36 V |
| Operating Temperature | 0°C – 50°C |
| Interfaces | USB Type-B / RJ45 / DB15 / DC-IN |
| CAN 2.0 | Supported |
| CAN FD | Supported |
| DoIP | Supported |
| J2534 | Supported |
| D-PDU | Supported |
| Local Diagnostics | Supported |
| Super Remote Diagnostics | Supported |
📦 Package Contents
Main Diagnostic Equipment
1 × Launch X431 PRO3S+ EV Diagnostic Tablet
1 × SmartLink C V2 Diagnostic Interface
1 × Main Diagnostic / OBD Connection Equipment
USB / communication cables
Power accessories
EV Diagnostic Equipment
1 × Launch EV Diagnostic / Battery Pack Connection Kit
Dedicated EV / new-energy vehicle cables
Battery-pack diagnostic adapters
EV-specific connection accessories
Additional Equipment
Applicable manufacturer-specific diagnostic adapters
User documentation
Quick-start information
Carrying / storage equipment supplied with the package
Note: EV battery cables and adapters can vary by market and package revision. The physical packing list supplied with the product should be treated as the final reference.
🆚 PRO3S+ EV vs Standard PRO3S+
| PRO3S+ EV | Standard PRO3S+ |
|---|---|
| Full-System Diagnostics | Full-System Diagnostics |
| Bi-Directional Control | Bi-Directional Control |
| ECU Coding* | ECU Coding* |
| Topology Mapping* | Configuration-Dependent |
| CAN FD | Configuration-Dependent |
| DoIP | Configuration-Dependent |
| SmartLink C V2 | Configuration-Dependent |
| J2534 via SmartLink | Configuration-Dependent |
| Dedicated EV Diagnostics | EV Expansion Required |
| Battery Pack Diagnostics | EV Expansion Required |
| Cell Voltage Analysis* | EV Equipment Required |
| SOC / SOH Analysis* | EV Equipment Required |
| EV Battery Equipment Included | Not Standard |
| Designed for EV + ICE Workshops | General Vehicle Diagnostics |
The PRO3S+ EV is the more suitable configuration for workshops regularly servicing electric and high-voltage vehicles.
🔋 PRO3S+ EV vs Basic OBD-II Scanner
| PRO3S+ EV | Basic OBD-II Scanner |
|---|---|
| Full-System Diagnostics | Mainly Engine / Emissions |
| EV High-Voltage Systems | Usually No |
| Battery Management System | Limited / No |
| Battery Pack Analysis | No |
| Cell / Module Voltage* | No |
| SOC / SOH* | Usually No |
| Topology Mapping* | No |
| Bi-Directional Tests* | Usually No |
| ECU Coding* | No |
| 40+ Service Functions* | Limited |
| CAN FD | Model-Dependent |
| DoIP | Usually No |
| J2534 | No |
| Remote Diagnostics | No |
🛠️ Typical EV Diagnostic Workflow
Connect the PRO3S+ EV to the vehicle.
Identify the vehicle using Auto VIN or manual selection.
Perform a complete system scan.
Review the Topology Map where supported.
Check BMS, VCU, charger, motor and other relevant DTCs.
Analyse high-voltage live data.
Check SOC / SOH where supported.
Compare cell or module voltages.
Analyse battery temperatures and voltage differences.
Perform supported active tests.
Follow guided procedures where available.
Complete the required repair.
Clear applicable DTCs.
Perform a post-repair scan.
Generate the diagnostic report.
🔧 Expandable Launch Platform
The PRO3S+ EV can be expanded with additional compatible Launch workshop equipment, including:
ADAS calibration equipment
TPMS tools
Oscilloscope
Sensor testing equipment
Videoscope
Immobiliser / key programming equipment
Commercial vehicle diagnostics
Motorcycle diagnostics
Additional EV / battery equipment
Additional hardware, software or licences may be required.
⚠️ EV & High-Voltage Safety
High-voltage EV battery systems can contain potentially lethal voltage.
Technicians should:
Have appropriate EV / high-voltage training
Follow manufacturer safety procedures
Use suitable PPE
Use correctly rated insulated tools
Follow HV isolation procedures
Verify absence of voltage where required
Never open a battery pack solely because diagnostic data identifies an abnormal cell/module
Follow manufacturer procedures before servicing HV components
The PRO3S+ EV is a diagnostic platform and does not replace professional high-voltage training or safety equipment.
⚠️ Compatibility Information
EV functions vary by manufacturer, model and region.
Battery-pack coverage depends on battery/BMS generation.
Cell-level information depends on data made available by the BMS.
SOH availability and calculation vary by manufacturer.
Topology Mapping is vehicle-dependent.
Bi-directional functions vary by ECU.
ECU coding is vehicle/module-dependent.
J2534 programming may require separate OEM software and subscriptions.
Secure Gateway access can require separate accounts or fees.
X431 FIX may require a separate subscription.
Additional expansion modules may require separate hardware or licences.
Always verify advanced functionality according to VIN, model year, battery pack and BMS generation.
🧠 Why Choose the Launch X431 PRO3S+ EV?
The Launch X431 PRO3S+ EV combines professional conventional vehicle diagnostics with dedicated EV and high-voltage battery analysis.
Its key capabilities include battery-pack diagnostics, cell/module voltage analysis, SOC/SOH data, battery temperature monitoring, Topology Mapping, bi-directional control, ECU coding and 40+ service functions.
With the included SmartLink C V2, technicians also gain access to modern communication capabilities including CAN FD, DoIP, J2534, D-PDU and remote diagnostics.
For workshops transitioning from conventional ICE vehicle servicing into EV repair, the PRO3S+ EV provides a versatile platform capable of handling both vehicle categories within the Launch X431 ecosystem.
