Launch X431 SmartLink B V2.0 – Advanced Remote Diagnostic and Programming Module
Supports DoIP, CAN FD, J2534, RP1210 | Remote and Local Operation | Compatible with Launch X431 Series
The Launch SmartLink B V2.0 is a cutting-edge communication interface designed to perform remote diagnostics, coding, and ECU programming without physical access to the vehicle.
It forms the core of the Launch SmartLink System, enabling collaboration between workshops and customers worldwide.
Here’s how it works: the client connects a SmartLink C device to the vehicle, while the remote expert operates SmartLink B from anywhere in the world to perform diagnostics, coding, or programming tasks — safely, securely, and in real time.













🧠 Think of SmartLink B as the master controller in a remote ECU programming setup — the client on-site doesn’t need any technical skills or software. The professional handles everything remotely through the SmartLink platform.
⚙️ Main Features and Advantages
| Function | Description |
|---|---|
| 🌐 Remote Diagnostics | Perform complete system diagnostics via the internet on vehicles connected through SmartLink C. |
| 🧩 Local Diagnostics | Can also operate locally when connected to Launch X431 tablets. |
| 📡 Advanced Protocol Support | Fully supports J2534, DoIP, CAN FD, CAN 2.0, RP1210, and D-PDU standards. |
| 🔁 Live Data & Network Status | Displays voltage, latency, and connection stability in real time. |
| 🛠️ Universal Tool Compatibility | Works with Launch software, OEM programs, and third-party diagnostic platforms via J2534 PassThru. |
| 🔒 Secure Client Management | “Pre-bind” system ensures each client is locked to a specific technician or workshop for secure communication. |
📡 Supported Protocols and Technologies
✅ CAN / CAN FD
✅ DoIP (Diagnostics over IP)
✅ J2534 PassThru (OEM software)
✅ D-PDU / RP1210
✅ Dual-band Wi-Fi (2.4G & 5G)
✅ Ethernet and USB connectivity
🔧 Example Workflow – How SmartLink Operates
1️⃣ The client connects SmartLink C to the vehicle (at home, in a garage, or at the workshop).
2️⃣ The technician logs into smartlink.x431.com and connects remotely to the vehicle.
3️⃣ Diagnostics begin in real time — the expert has full access to modules, data, and control functions.
Supported operations include:
Reading and clearing DTCs
ECU coding and adaptation
Online programming and firmware updates
Calibration, relearn, and reset procedures
Component activation and live data monitoring
📲 SmartLink Service Platform – Connection and Control Modes
Mode 1 – Technician-Controlled Operation
SmartLink C is registered under the technician’s account.
The client only connects the hardware to the vehicle.
The technician remotely manages all operations, activations, and licensing.
Mode 2 – Client-Controlled Operation
The client creates their own SmartLink account.
They can post diagnostic requests or manage their own licenses.
Optionally, they can be permanently linked (pre-bound) to a specific service provider.
📦 Package Contents
| Component | Description |
|---|---|
| 🧠 SmartLink B Module | Main VCI unit featuring a 3.97” color touchscreen display. |
| 🔌 OBD II Extension Cable | For connection flexibility during local diagnostics or bench testing. |
| 🌐 CAT-6 Ethernet Cable | High-speed wired connection for reliable communication. |
| 📎 USB Cable | Enables J2534 PassThru mode for OEM software. |
| 📄 User Manual & Quick Start Guide | Step-by-step setup and registration instructions. |
🔐 Note: The remote diagnostic license is not included. An annual activation card is required to unlock SmartLink remote services.
📐 Technical Specifications
| Parameter | Specification |
|---|---|
| Display | 3.97" Touchscreen (320×480) |
| Operating Voltage | DC 9V–36V |
| Connectivity | Dual-band Wi-Fi 2.4G / 5G, Ethernet |
| USB Interface | Type-B USB 2.0 |
| Memory / Storage | 256MB / 8GB |
| Operating Temperature | –10°C to +50°C |
| Power Consumption | <6W |
| Dimensions | 204 × 110 × 45 mm |
| Weight | 3.8 kg |
🎯 Ideal Users
🚘 Workshops offering remote diagnostic assistance to other garages or clients
🛠️ ECU coding and programming specialists using OEM or Launch software
💻 Mobile technicians and franchise networks managing multiple service points
🔧 Fleet operators needing remote ECU analysis and troubleshooting support
💡 Why Choose Launch SmartLink B V2.0?
Expands your diagnostic capabilities globally
Enables advanced remote ECU programming and coding
Works seamlessly with Launch X431 PRO5, PAD VII, and PRO3 APEX
Supports all modern communication protocols (DoIP, CAN FD, J2534, RP1210)
Designed for professional technicians and diagnostic engineers
Secure cloud platform with encrypted communication and data protection


