2 Years Update 2026 LAUNCH X431 PRO3S+ EV Diagnostic Scanner for EV Diagnostics & Battery Pack Analysis Supports Topology 40+ Service Functions CAN FD DoIP

2026 LAUNCH X431 PRO3S+ EV Diagnostic Scanner EV Diagnostics & Battery Pack Analysis

LAUNCH X-431 PRO3S+ EV diagnostic device integrates complete new EV diagnostics with battery pack analysis. Powered by the Android 10.0 operating system and featuring a 10.1-inch high-definition sunlight-readable screen, it comes standard with the SmartLink C V2 connector, supporting both local and remote diagnostic modes. It enables high-voltage system diagnostics for new energy vehicles and supports various battery pack diagnostic methods, accurately reading cell voltage and temperature data, intelligently calculating voltage differences, and quickly locating faults—making it an essential tool for new energy vehicle maintenance.

Highlights:

• Supports 95% new energy vehicle models. Wide electric vehicle coverage and 20+ battery packs supported.
• OE-level EV diagnostics and battery pack diagnostics.
• Battery pack data stream enables precise fault detection and faster repair.
• Fast reading of battery pack information: module count, SOC, SOH, temperature, etc.
• In-depth access to cell voltage and temperature data help guide repair decisions.
• Supports dual mode diagnosis: local diagnostics and super remote diagnosis
• Supports CAN FD, CAN 2.0, DoIP, J2534 and D-PDU protocols
• Supports AutoVIN, Guided Function, FCA AutoAuth
• Supports Topology mapping
• Supports CAN BUS PIN Detection
• Optional X-431 FIX Database.
• Supports diagnostic report generation, sharing, and printing.
• Supports multiple add-on modules: TPMS, ADAS, videoscope, battery tester, sensorbox, scopebox, IMMO programmer, X431 key programmer etc.
• Expandable vehicle coverage via MALL, including passenger cars, commercial vehicles, motorcycles, IMMO service, etc (purchase in Mall)
• 2 Years free update

 
Powerful Diagnostic Functions:
 
Dual Diagnostic Modes
Supports Local Diagnostics
Super Remote Diagnostics
 
Super Remote Diagnostics
Server side supports:
X431 diagnostic devices
Specialized diagnostic devices (original equipment)
Third-party diagnostic devices
 
Diagnostic Functions
Smart Diagnosis, VIN Auto Recognition, Fault Guidance, Topology Map, Rapid Scan, Guided Functions, SGW Gateway, etc.
 
Mainstream Protocol Support
Supports J2534, D-PDU and other standards
Supports mainstream protocols such as CAN2.0, CANFD, DOIP, etc.
 
New Energy Vehicle Diagnostics
Supports over 95% of new energy vehicle models
Keeps pace with market trends with rapid model updates and precise diagnostics
 
Battery Pack Diagnostics
Multiple battery pack diagnostic methods
Comes with a complete set of connectors for new energy battery packs
 
Resources
Supports the X431 FIX database
Provides a rich free resource library including repair cases, fault code help, technical manuals, operation tips, and more
 
High Expandability
Supports expansion for passenger cars, commercial vehicles, immobilizer, and motorcycles
Supports various hardware expansion modules: ADAS, immobilizer programmer, TPMS, oscilloscope, sensors, and over a dozen other expansion modules

Add-on models
TPMS
ADAS
O2-1 ScopeBox
O2-2 Scopebox
S2-2 Sensorbox
Videoscope
BST36- Battery tester
EM101N Scopebox
Multimeter EM101N
Current Clamp
ES Insulation
X-prog3 IMMO Programmer
Launch X431 key programmer

Launch X431 Pro3S+ EV Functions:

EV Diagnose
By comparing the differences between new energy vehicles and traditional vehicles, the diagnostic software logic has been optimized in terms of overall vehicle diagnostics, improving diagnostic speed while ensuring accuracy and enhancing the diagnostic experience. Currently, diagnostic software has been developed for multiple vehicle models, including BYD, Xpeng Motors, Leapmotor, Neta, Roewe, GAC, BAIC New Energy, Zeekr, etc., with a model coverage rate of over 95%. More models are continuously being updated…



System and Function:
OEM-level diagnostic functions, graphical display of the entire vehicle system structure for a comprehensive view; rapid scanning to quickly locate faults; test plans guide repairs step by step. 
 



Through battery pack data streams, the cause of faults can be precisely located, improving diagnostic and repair efficiency.

Can Bus Pin Detection
Used to detect the voltage of the pins on the vehicle's OBD-II diagnostic socket and the supported protocol types, helping technicians determine whether the OBD-II diagnostic interface has a fault.


 
EV Battery Pack Diagnostics
 
Multiple Battery Pack Diagnostic Methods
 
Dedicated Harness Diagnosis: Diagnosis using dedicated battery pack connectors, simple and safe, plug-and-play.
Jumper Diagnosis: When no standard battery pack interface is available, connect to the battery pack interface according to the diagnostic software instructions.
OBD Diagnosis: Battery pack diagnosis via the vehicle's OBD-16 interface.

The battery pack is a key component of EVs. Testing the battery pack is one of the important steps in EV inspection. Using the battery pack diagnostic software, you can quickly read battery pack information, including but not limited to the number of battery pack modules, SOC, SOH, current temperature, etc. Additionally, it can deeply read the voltage and temperature values of individual cells within each module, helping technicians quickly understand the battery pack status and providing guidance for subsequent repairs.


 Supports generating diagnostic reports, as well as report sharing and printing.



Special Functions
Supports matching, coding, and common special functions for programmable modules on most vehicle models,

Such as for EV:  EV air conditioning compressor testing, coolant replacement, high voltage power‑off(HVPO), on‑board charger offline testing(OBC Test), DC‑DC converter offline testing(DCDC Test), 48V mild hybrid component testing(48V MHEV Test), chip data repair,

For Automotive:
maintenance light reset, throttle matching, steering angle reset, brake pad reset, tire pressure reset, immobilizer matching, ABS bleeding, battery matching, gear learning, injector coding, sunroof initialization, headlight matching, suspension matching, transmission matching, exhaust gas recirculation, window calibration, seat calibration, tire modification, language setting, A/F adjustment, electronic water pump activation, transport mode deactivation, start‑stop setting, automatic air conditioning initialization, engine power balance, high‑voltage battery health detection, intelligent cruise control system calibration, motor angular position sensor calibration, and other special functions.
 


Feedback
If you encounter abnormal vehicle software or function issues under special circumstances during use, you can report the problem to LAUNCH Company, and specialized technical staff will track and handle it.
 

Software Update
Supports one‑click updates for the operating system, client, vehicle software, and firmware; vehicle software updates quickly to keep pace with the market.
 

Repair Infor
Supports optional purchase of X431 FIX. Provides free training videos and equipment operation tips: including repair cases, fault code help, technical manuals, operation tips, etc.


 
Toolbox
Supports 13 expansion modules including TPMS, ADAS, new energy current clamp, new energy oscilloscope, new energy multimeter, battery tester, etc.


 
Mall
Supports expansion of commercial vehicle, passenger vehicle, immobilizer, and motorcycle software packages for new energy equipment.


 
Diagnosis Kit
Small tools such as vehicle coverage, CANScope, HD CAN BusTest, Can Bus pin detect, Flash data management, etc., assist with repairs.


 
License List
Supports activation of SGW gateway and other services to use corresponding functions.


 
Other Modules
Supports License List, My Points, error correction, opinion feedback, settings, about, and other functions.



Features of LAUNCH X-431 PRO3S+ Tablet:

Powerful Hardware Upgrade
Android 10.0 OS
4GB RAM + 64GB storage
Stable system with strong compatibility
 
Display Upgrade
10.1-inch Gorilla Glass screen
Sunlight-readable for clear visibility
 
Battery Upgrade
Cells connected in series for high power output
6300mAh @ 7.6V
Strong power delivery with extended battery life
 
Enhanced Compatibility
New Type A port added
Supports external expansion tools such as oscilloscopes, sensors, and immobilizer programming devices
 
Human-Centered Industrial Design
Reinforced edges for impact protection
Swivel stand for easy support and hanging
Dust-resistant design

Specification:

X-431 PRO3S+ EV

   SmartLink C V2.0

Features of the SmartLink C V2 Connector:

Fully Laminated Screen Design
Prevents dust from entering the screen
Prevents fogging
 
Enhanced Wi-Fi Signal
Optimized Wi-Fi antenna and module
 
Improved Heat Dissipation
Additional cooling vents
 
More Secure Connection
OBD16 changed to DB15 for improved connection stability
Test cable secured to the interface with screws
 
Multi-Protocol Support
Supports CANFD protocol
Supports CAN2.0
Supports DOIP protocol
Supports J2534 standard
Supports D-PDU standard
 
Super Remote
Request remote technician service support
Supports remote service via X431 diagnostic devices
Supports remote service via specialized diagnostic devices (original equipment)
Supports remote service via third-party diagnostic devices

Package includes:
 
1pc x LAUNCH X-431 PRO3S+ Tablet
1pc x SmartLink C V2 Connector
1pc x box