launch x431 PRO3S+ SmartLink HD Bi-Directional Scan Tool

The LAUNCH x431 PRO3S+ SmartLink HD is an upgraded version of the launch x431 PRO3S+ HDIII and ranks No.1 in vehicle coverage. It supports diagnostics for cars, trucks, buses, trailers, excavators, diesel engines, construction machinery, pick-up vehicles, and more.

launch X431 Pro3s+ Smartlink HD Highlights

1. The tablet features a higher version operating system, larger storage capacity, and longer battery life—enabling faster, more stable, and durable diagnostics.
2. Supports Topology Mapping diagnosis.
3. Compatible with EV diagnostic kit (NEW).
4. Supports both 12V & 24V diesel and gasoline cars and trucks.
5. Includes Smartlink C 2.0 truck module supporting J2534, CAN FD, and DoIP protocols.
6. Powered by an 8-core Qualcomm Snapdragon processor.
7. Offers ALL-System ALL-Function Diagnostics with Full Bi-directional Control (Active Test).
8. Supports ECU Coding, Online Coding, and Key Programming.
9. Wide car model coverage with strong diagnostic capabilities, including full system diagnosis for all supported models.
10. Features VIN code automatic identification for quick entry into diagnostics.
11. Supports reading version information, code reading, code clearing, data stream reading, action testing, coding, matching, and more.
12. Includes VAG Guided Function for VW, Audi, Skoda, and Seat (Step-by-Step Guide).
13. Supports Auto Auth for FCA/SGW.
14. Provides 12-in-1 Live Data Monitor in graphical format with Autoscan functionality.
15. Multiple expansion modules supported: endoscope, BST-360, oscilloscope, sensor, Wi-Fi printer, TPMS, X-prog3, remote generator, and more.
16. Supports 60 special functions including maintenance light reset, throttle matching, steering angle reset, brake pad reset, tire pressure reset, and others.
17. Works with HDIII Heavy Duty module to test 24V trucks (requires additional truck module). Supports both passenger car and commercial vehicle diagnostics.
18. Includes 2 Years Free Software Subscription. After that, a 1-year subscription costs $899 (covers both cars and trucks).
19. Multi-language support: English, French, Spanish, German, Russian, Korean, Japanese, Portuguese, Italian, Polish, Dutch, Hungarian, Finnish, Simplified Chinese, Czech, Turkish, Greek, Arabic, Danish, Persian, Romanian, Serbian, Swedish, and Traditional Chinese.

Version Notice

• Global Version: For customers outside the UK and EU countries.
• UK/EU Version: For customers in UK/EU countries.

Launch X431 Pro3s+ Smartlink HD Functions

New CAN FD & DoIP Protocol Support (No Adapter Required)

LAUNCH scanners are designed with customer needs in mind. The 2024 upgraded LAUNCH X431 PRO3S+ SmartLink HD introduces CAN FD and DoIP protocols to enhance diagnostic speed and vehicle communication rates.

The CAN FD standard increases bit rates up to 4 Mbit/s during payload transmission, enabling faster processing of larger diagnostic data volumes—saving both time and costs. Compatible with GM models including Onix (2020–2024), Tracker (2020–2024), Suburban (2021–2024), Tahoe (2021–2024), Montana (2024), Silverado (2024), Electra E5 (2024), Escalade (2021–2024), Escalade ESV (2021–2024), Sierra (2024), Yukon (2021–2024), Yukon XL (2021–2024), and Chrysler models including Grand Cherokee (WL) (2021–2023) and Grand Wagoneer (2022–2024).

DoIP enables ultra-fast 100Mbit/s data transfer at low hardware cost and supports remote diagnostics across all connected ECUs. Compatible with BMW (F & G chassis), Volvo (2018 and later), and Land Rover & Jaguar (2017 and later).

FCA Secure Gateway Access

The LAUNCH X431 PRO3S+ SMARTLINK HD 2.0 provides authorized access to bypass the Secure Gateway (SGW) on Fiat/Chrysler/Dodge/Jeep vehicles (2017–2024), enabling technicians, dealers, engineers, and service shops to perform essential repair procedures including code clearing, bi-directional tests, actuations, relearns, and ADAS calibration assistance.

Intuitive Topology Mapping

• Displays each module’s status and number of DTCs on a single page.
• Shows the real communication structure of all ECU modules, simplifying wiring schematics.
• Tap to directly access systems or modules with fault codes.
• Zoom in/out to inspect color-coded modules indicating system health.

Topology Mapping visualizes vehicle systems as a diagrammatic tree, clearly identifying normal, faulty, or unequipped systems. With one-click system-wide diagnosis, it instantly locates faults using color-coded health indicators for rapid troubleshooting.

ADAS Calibration

Compatible with the LAUNCH X431 ADAS Mobile module to calibrate advanced driver-assistance systems such as ACC, AEB, LKA, LDW, and AVM. This function enhances safety for drivers, passengers, and pedestrians by reducing accident severity and frequency through warnings, interventions, and mitigation when accidents are unavoidable.

DTC Help & Google Search

With a single click on “DTC Help” or “Code Search” after a DTC appears, users save time by avoiding manual lookups.

12-in-1 Live Data Stream Graphing & Export

Provides detailed live data streams—including Accelerator Pedal Position Sensor, Actual Output Shaft Speed, Clutch A Actuator Motor, Vehicle Battery voltage, and more. Graphical representation enables clear analysis of module behavior over time. Data can be exported as CSV or PDF files for easy recording and performance tracking.

Tons of Online Maintenance Resources

Access how-to videos, operation guides, DTC explanations, user manuals, FAQs, and quick-start tutorials—such as resetting BMW brake warning lights—to efficiently resolve common vehicle issues.

Remote Diagnosis & Feedback

When facing complex issues beyond your expertise, use “Remote Diagnosis” to connect with off-site experts for real-time assistance. If you encounter bugs or difficulties, send “Feedback” directly to LAUNCH technicians for prompt resolution.

Diagnostic Report Print & Share

Generate a comprehensive full-system Diagnostic Report with one click. Reports can be emailed to your office or customers, or printed as a vehicle health report card.

Programmable Module Installation (PMI)

Supports PMI for FORD, Lincoln, Mazda, and others—allowing module replacement (e.g., ECU) or initialization without requiring J2534 or additional subscriptions.

V.A.G Guided Functions

Step-by-step on-screen instructions for Audi, Volkswagen, Skoda, and Seat guide even beginners through complex diagnostics, reducing reliance on external mechanics.

Auto VIN Scan

Five quick diagnostic entry methods:

1. AUTO-VIN SCAN
2. CAMERA VIN
3. Manually Input VIN
4. Select Area and Vehicle – Automatic Detection
5. Select Area and Vehicle – Manual Selection

ECU Coding: Online Coding, Matching, Calibration, Relearn, Personalization, Retrofit & Customization

ECU coding capabilities allow the LAUNCH X431 PRO3S+ SmartLink HD to enhance vehicle performance, unlock hidden features, disable unwanted functions, reprogram adaptive data after repairs, and customize high-end configurations—improving fuel efficiency and ensuring safer driving experiences.

Advanced Coding and Configuration Capabilities

Online Coding

This LAUNCH scan tool can directly access online vehicle repair data to perform high-level repairs.

Offline Coding

Read the code from the original module, then write the code for the new module—for example, writing a VIN to a new ECU.

Component Matching

Perform matching, relearn, calibration, or initialization of adaptive data for certain components after repair or replacement, such as: suspension calibration, seat matching, sunroof initialization, gearbox matching, injector calibration, transmission adaptation, delete adaptation data, tank calibration, height sensor system calibration, PSM sensor calibration, etc.

Retrofit/Modification

Examples include retrofitting a battery with a different type or upgrading headlights, taillights, and interior lighting to LED lights.

Unlock Hidden Features

Examples include disabling auto start-stop, disabling daytime running lights, disabling safety belt chimes, deleting transport mode, deleting transmission adaptive values, and setting speed limits.

J2534 Programming

Pairing with the SmartLink C V2.0 device (serving as a J2534-Compliant VCI), you can operate a PC or LAUNCH X431 PRO3S+SmartLink C diagnostic tool to download OEM software and install J2534 files from the LAUNCH official website to perform J2534 programming for some vehicles. Note: Reach us to get the J2534 Operation manual.

What Can This J2534 Programming Function Do for You?

1. Operate OEM programming without using OEM tools
2. Replace ECUs: program blank ECUs
3. Write-in Data: refresh used ECUs
4. Repair missing ECU information
5. Upgrade ECU software version

Audi / VW Firmware Protection Cancel Features

One feature most technicians really want is to remove firmware protection from their cars. This feature helps mechanics replace car parts and carry out car modifications.

Programmable Module Installation (PMI)

Supports PMI function, compatible with FORD, Lincoln, Mazda, etc. This function is used when you need to replace a module (replace ECU) or initialize a module—no need for J2534 or buying a subscription.

OE-Level All Systems Diagnostics

The LAUNCH X431 PRO3S+SmartLink HD 2.0 supports reading and clearing DTCs, reading live data streams, and performing active tests and service functions for all modules of 99% of cars and trucks on the road—and does so to OE levels. Rather than using separate OE diagnostic tools, the Launch scanner LAUNCH X431 PRO3S+ SMARTLINK HD 2.0 helps you increase efficiency and control costs. The systems include but are not limited to:

PCM (Drive System)

engine, Transmission, Transfer case, Electrical Machine Electronics, Gear, and more…

Chassis System

Accumulator Management Electronics, Steering, Integrated Chassis Management, Tyre Pressure Control, Active Cruise Control, Braking System, Suspension, TPMS, and more…

BCM (Body System)

SRS Airbag, Camera, Audio Radio, Gateway, Cluster Dashboard, Rain Sensors, Charging Interface Module, Parking Assistance, Power Control Unit, Touch box, Light, Battery Charging System, Head-up Display, Wipe Control System, Roof, Seat & Door Motor system, ABS ESP system, Air Condition, Electric Windows, and more…

Electrical System

Centralized Control System, Chassis Integrated Control and Safety System, Intelligent Body Electronic System, Communication and Information/Entertainment System, and more…

Bi-directional Control (Active Test)

For Cars

Injector Buzz Test, Idle Speed Adjustment, Window/Mirror/Door Lock test, Pump and Valve tests, Fuel Pump, Solenoid valve, Tank Ventilation, Switch/cylinder correction off/on, EGR test, EVAP test, A/C Compressor Activation, Turn on the radiator fan, Modulate the throttle, Cycling the A/C clutch on and off, Acceleration Device Test, etc. (varies by car model and year)

For Heavy Duty Trucks

Cylinder cut-out test, Compression test, Injector volume commands, Injector programming, SCR commands, Rail high pressure test, SCR catalyst regen, Cylinder balance test, DPF regen, VGT calibrations, SCR commands, Aftertreatment reset, Parameter changing, Glow relay activation, Reset the DPF filter, etc. (varies by car model and year)

Power Balance Test

Cylinder power balance testing can help uncover hidden engine issues related to engine misfires, lack of power, or just a poor-running engine—issues commonly missed with other tests. Cylinder power balance testing is one of the best and easiest ways to find the source of an engine misfire. Furthermore, it is often used along with cylinder compression and cylinder leakage tests to further pinpoint the problem.
Note: All above functions are not available for some specific car models. Reach us for details.

60+ Kinds of Maintenance Functions (Vary By Car Model and Year)

1. Oil Lamp Reset Service: Perform reset for a new calculation of Engine Oil Life system once oil is changed.
2. EPB Reset: Help replace and reset the brake pad.
3. BAT Battery Service (BMS): Clear fault information of low battery and make it match again.
4. DPF Service
5. SAS Steering Angle Sensor Reset: Reset the steering angle to zero to keep the car running straight.
6. ABS Bleeding: Help exhaust the air.
7. Fuel Injector Coding: Write the new injector code into the car system for correct cylinder injection quantity.
8. TPMS Service: Makes sense in displaying sensor IDs from the vehicle's ECU, inputting TPMS sensor replacement IDs, and testing sensors.
9. Throttle Adaptation: Initialize the throttle actuators to the default state.
10. AFS Headlamp Reset: Initialize the adaptive headlamp system.
11. Sunroof Initialization: The sunroof needs to be reset when the sunroof control unit has communication problems or is changed.
12. Suspension Reset: Adjust the vehicle body height sensor for level calibration.
13. Gearbox Reset: Help complete gearbox self-learning to improve gear shifting quality.
14. Gear Learning: Monitors certain camshaft position sensor signals.
15. Tire Reset: Set the size parameters of the modified or replaced tire.
16. A/F Reset: Set or learn Air/Fuel ratio parameters.
17. Adblue Reset (Diesel Engine Exhaust Gas Filter): Reset urea after the diesel exhaust treatment fluid is replaced or filled up.
18. Coolant Bleeding: Activate the electronic water pump.
19. Language Change: Change vehicle system language.
20. Nox Sensor Reset: Reset catalytic converter learned value stored in ECU.
21. Stop/Start Reset: Set up the automatic start-stop function in ECU.
22. Seat Calibration: Calibrate the memory in replaced or repaired seats.
23. Transport Mode: Deactivate the transport mode.
24. Windows Calibration: Perform door window matching to recover ECU initial memory.
25. AC System Relearn/Initialization
26. EGR Reset
27. Reset Fuel Trim
28. Reset Fuel Alcohol Level
29. High Voltage Battery Diagnostics
30. GPF Regeneration
31. Camshaft/Crankshaft Sensor Relearn
32. Interactive Vehicle Dynamics (IVD) Initialization Sequence
33. Fuel Economy Test
34. Halt/Resume Transmission Adaptive Learning
35. Passive Anti Theft System (PATS) Functions
36. Relearn Vehicle Data
37. Initialisation Of Automatic Tailgate
38. Initialise Power Window Regulators
39. Seat Standardisation
40. Normalise Slide/Tilt Sunroof
41. Activate Contactless Vehicle Access
42. Power-Down Command
43. Autoaddressing Ambient Light BDC
44. Unlocking Auxiliary Heater
45. Drain/Fill The Refrigerant Circuit
46. Installation Position Of Flap Motors
47. ETS Test Of Lithium Ion Battery
48. Register Battery Exchange
49. Reset Adaptation Values
50. Adjusting The Electromotive Throttle Controller
51. Injection Quantity Compensation
52. Open And Close Radiator Blind
53. Activate/Deactivate Workshop Mode
54. Start-Up For Brake Pedal Travel Sensor, etc.

Frequently Asked Questions

Q: Why do I only see 37 service functions on my tablet when it’s advertised as 60+ service functions?

A: You can "quick access" 37 of the most commonly used special functions under the main menu "Service Functions," but the listed functions below this menu are obviously NOT ALL the special functions you will get from our LAUNCH X431 PRO3S+SMARTLINK HD. YES—you can get 60+ for free as we advertised! (Some car models offer up to 300+ special functions including calibration, relearn, adaptation, initialization, and retrofit.)

Q: If so, how can I locate the 60+ or even more special functions?

A: You can locate more than 60 reset functions (special functions) under the module/system section after you access your vehicle software. It’s completely free to use permanently.

Expanded Functions

1. X431 VSP-600 Videoscope: For inspection of hidden and narrow parts of the engine, fuel tank, brake system, etc.
2. X431 TSGUN: You can use it not only to activate the sensor ID, tire pressure, sensor frequency, tire temperature, and battery status; you can also program sensor data to a blank LAUNCH branded sensor in three ways: automatically, manually, and by activating a copy. At the same time, you can write the newly programmed sensor ID to the vehicle ECU.
3. X431 X-PROG 3: IMMO for V.A.G Group Above 3.5, advanced IMMObilizer and key programmer. Vehicles that require a clone key are not compatible with this accessory.
4. X431 Heavy Duty Module – LAUNCH HDIII or SmartLink HD 2.0: Add-on module is an essential truck module which can turn your X431 scan tools into full-function heavy-duty truck diagnostic tools, working on both heavy-duty (Class 4 through 8) and medium-duty trucks (such as heavy trucks, city buses, bulldozers, excavators, etc.).
5. X431 ADAS Mobile/ADAS PRO: Compatible with LAUNCH X431 ADAS Mobile to calibrate advanced driver-assistance systems, such as ACC, AEB, and more. ADAS calibrates a wide range of camera-based & radar-based driver assistance systems. Operate ADAS calibration on vehicle cameras, LKA system, ACC system, LDW system, and AVM system. ADAS is designed to improve driver, passenger, and pedestrian safety by reducing both the severity and overall number of motor vehicle accidents. ADAS can warn drivers of potential dangers, intervene to help the driver remain in control to prevent an accident, and, if necessary, reduce the severity of an accident if it can’t be avoided.
6. X431 WiFi Printer: Print out diagnostic data/reports.
7. X431 BST360 Battery Test: For Battery Cranking System Test, Battery Charging System Test, Battery Health Test.
8. EV Diagnostic Kit: New Energy Battery Pack perform battery pack analysis.
9. IMMO Software Package: Advanced IMMO key programming with X-PROG3.
10. S2-2 Multimeter
11. S2-2 Sensorbox

Launch X431 SmartLink C Highlights

1. Update Version of Launch X431 HD III: The transmission speed is faster and more stable, and the visual operation interface makes it more convenient.
2. Support Bluetooth, Wi-Fi, USB, and other communication methods.
3. Can be used with Launch X431 V+, X-431 PRO3S, and X431 PRO5 series.
4. Support full system fault diagnosis, with functions such as code reading, code clearing, data stream reading, special functions, and action test.
5. Support commercial vehicles, passenger vehicles, new energy, and other models: Covering Cummins, Bosch, Weichai, Shangchai, Yuchai, Xichai, Chaochai, Yangchai, Quanchai, and other engine diagnostic software. It supports trucks, buses, construction machinery, agricultural machinery, trailers, ships, and other types of vehicle software.
6. Support super remote diagnosis.

NOTE: The SmartLink C HD does not work with Pro5/PAD V/PAD VII (they work with extra Heavy Duty Truck Software and Adapters).

Compared with X-431 HDIII, the SmartLink C 2.0 Is More Powerful in Function

• The transmission speed is faster and more stable.
• The visual operation interface makes it more convenient.
• It supports commercial vehicles, passenger vehicles, new energy, and other models.
• It supports super remote diagnosis.

Launch X431 Pro3S+ SmartLink HD Vehicle Coverage

This LAUNCH diagnostic tool has expanded vehicle coverage, being well-matched with over 99% of popular cars from America, Europe, and Asia—even the most recent models through 2024. Compatible with cars, trucks, buses, trailers, excavators, diesel engines, construction machinery, pick-ups, hybrid vehicles, etc.

Passenger Cars (Gasoline and Diesel)

European Cars

for ABARTH, for ALFA ROMEO, for AUDI, for BENTLEY, for BMW, for BUGATTI, for CITROEN, for DACIA, for EUROFORD, for FERRARI, for FIAT, for GAZ, for OPEL(SOUTHAFRICA), for IVECO, for Jaguar, for LAMBORGHINI, for LANCIA, for LANDROVER, for MASERATI, for MAYBACH, for MERCEDES, for MINI, for OPEL, for PEUGEOT, for PORSCHE, for RENAULT, for ROLLSROYCE, for ROVER, for SAAB, for SEAT, for Skoda, for SMART, for SPRINTER, for VAUXHALL, for VAZ, for VOLVO, for VW...

USA Cars

for BUICK, for CADILLAC, for CHEVROLET, for Chrysler, for DODGE, for FIAT(BRAZIL), for FORD, for FORD(AUSTRALIA), for GM, for JEEP, for LINCOLN...

Asian Cars

for ACURA, for DAEWOO, for DAIHATSU, for HM, for HOLDEN(AUSTRALIA), for HONDA, for HYUNDAI, for IKCO, for INFINITI, for ISUZU, for KIA, for LEXUS, for LUXGEN, for MAHINDRA, for MAHINDRA(INDIAN), for MARUTI, for MARUTI(INDIAN), for MAZDA, for MITSUBISHI, for NISSAN, for GTR(NISSAN), for PERODUA, for PERODUA(MALAYSIA), for PROTON, for PROTON(MALAYSIA), for SAMSUNG, for SAIPA, for SSANGYONG, for SUBARU, for SUZUKI, for TATA, for TATA(INDIAN), for TLISUZU, for TOYOTA, for UNITED PAKISTAN...

Chinese Cars

for BRILLIANCE, for BYD, for CHANGA, for CHANGHE, for CHBUICK, for CHERY, for CHANGHE SUZUKI, for DFCITROEN, for ECUAID, for FAW(TIANJIN), for FOTON, for GONOW, for GWM, for HAFEI, for HAIMA, for JAC, for JIANGHUAI, for JMC, for JOYLONG, for LIFAN, for MG(SAIC), for QOROS, for MAXUS, for SPARK, for TOYOTA(CHINA), for VENUCIA, for WULING, for XINKAI, for POLARSUN, for ZX AUTO, for ZOTYE...

Commercial Vehicles

Trucks

for MERCEDESBENZ, for CREDO, for DAF, for DFL, for ERF, for FAW, for FORD, for FOTON, for FREIGHTLINER, for BREMACH, for FUSO, for ASHOK LEYLAND, for HD-DEMO, for HINO, for HYUNDAI, for INTERNATIONAL, for IRIS BUS, for ISUZU, for IVECO, for JAC, for JMC, for KENWORTH, for MACK, for MAN, for RENAULT, for SCANIA, for SINOTRUK, for STERLING, for TATA, for UD, for VOLVO, for WESTERN STAR, for MAXXFORCE, for JOHN DEERE, for BENDIX...

Buses

for MERCEDESBENZ, for BONLUCK, for GOLDENDRAGON, for ASHOK-LEYLAND, for DEMO, for HIGER, for HINO, for HYUNDAI, for IRIZAR, for ISUZU, for MAN, for NEOPLAN, for RENAULT, for SETRA, for SITCAR, for SUNLONG, for SUNWIN, for VOLVO, for ZHONGTONG...

Engineering Vehicles

for MERCEDESBENZ, for CATERPILLAR, for DEMO, for MACHINERY, for HINO, for ISUZU, for VOLVO...

Launch X431 Pro3S+ SmartLink HD Hardware

• 2.0GHz 4-Core Cortex-A55 Processor – accelerates diagnostic speed
• Android 10.0 OS – easy to use and keeps a smooth diagnostic operation
• 4GB RAM & 64GB ROM Memory
• 10.1-inch TFT-LCD with 1280 x 800 resolution & capacitive touch screen
• 5GHz & 2.4GHz Dual Wi-Fi – communication automatically connects within about 33ft
• Built-in 8MP rear camera
• 180° adjustable stand for hands-free operation
• 47880mWh (7.6V, 6300mAh) super large lithium-ion battery for up to 10 hours of continuous operation

Package Includes

• 1pc x Launch X431 PRO3S+
• 1pc x SmartLink C V2.0
• 6pcs x Fuses
• 9pcs x Jumpers
• 1pc x Jumper 10
• 1pc x OBD16 Connector
• 1pc x IV 30 Connector
• 1pc x Type II OBD9 Connector
• 1pc x OBD6 Connector
• 1pc x CAT9 Connector
• 1pc x BENZ 14 Connector
• 1pc x RENAULT 12 Connector
• 1pc x ISUZU 20 Connector
• 1pc x VOLVO 8 Connector
• 1pc x MAN 12 Connector
• 1pc x MAN 37 Connector
• 1pc x IVECO 38 Connector
• 1pc x HY-16 Cable
• 1pc x M/F 12+16 Cable
• 1pc x USB Cable
• 1pc x Test Cable
• 1pc x Type C to USB Cable
• 1pc x Standard Power Adapter
• 1pc x OBD Main Cable
• 1pc x Power Cable Clips
• 1pc x Lighter
• 1pc x For K-20 Adapter
• 1pc x For HA-3 Adapter
• 1pc x For G/V-12 Adapter
• 1pc x For FD-6+1 Adapter
• 1pc x For CR-6 Adapter
• 1pc x For TA-17 Adapter
• 1pc x For TA-22 Adapter
• 1pc x For NN-14+16 Cable
• 1pc x For MH-12+16 Cable
• 1pc x For B-20 Adapter
• 1pc x For BZ-38 Adapter
• 1pc x For BZ-14 Adapter