Lexia 3 Diagbox V9.129 Professional Diagnostic Interface – Full Chip PSA XS Evolution for Citroen, Peugeot, DS & Opel

The Lexia 3 Diagbox V9.129 Full Chip is a professional, dealer-level diagnostic interface designed specifically for Citroen, Peugeot, and DS vehicles. This advanced tool delivers the same level of access used in authorized PSA service centers, allowing you to perform full system diagnostics, ECU programming, coding, and advanced adaptations across a wide range of models.

Built with the high-quality 921815C Full Chipset, this version ensures stable communication with all vehicle modules and supports both older and modern PSA platforms. Unlike basic OBD2 scanners, the Lexia 3 system provides deep access to vehicle electronics, including BSI configuration, module telecoding, and ECU resets, making it an essential solution for workshops and PSA specialists.

Wide Vehicle Compatibility & PSA Platform Coverage

The Lexia 3 Diagbox system is engineered for the complete PSA ecosystem, supporting vehicles from 1995 up to 2022, including both legacy and modern CAN-based architectures.

• Citroen: Saxo, Xsara, Xantia, Berlingo, C1, C2, C3, C4, C5, C6, C8, DS3, DS4, DS5, Jumpy, Jumper
• Peugeot: 106, 206, 207, 208, 307, 308, 407, 508, 3008, 5008, Partner, Expert, Boxer, iOn
• DS Automobiles: Full support for DS series models
• Opel (PSA-based models): Supported via Diagbox V9 software for newer shared platforms

The interface supports multiple communication protocols including K-Line multiplexing, CAN-BUS, and SAE J1850 (PWM/VPW), ensuring compatibility with both older and newer vehicles.

Dealer-Level Diagnostic & Programming Functions

The Lexia 3 system goes far beyond standard diagnostics, providing complete control over vehicle electronics.

🔍 Full System Diagnostics

• Auto-Scan Function: Detects all installed ECUs and performs a full vehicle health check in one step
• Read & Clear Fault Codes (DTCs) with detailed descriptions (e.g., fuel pressure, sensor faults)
• ECU Identification: Displays part numbers, software versions, and calibration data

📊 Live Data & Actuator Control

• Real-Time Data Monitoring: View parameters such as engine speed, battery voltage, lambda values, coolant temperature
• Graphical Data Display: Analyze multiple parameters simultaneously for deeper diagnostics
• Actuator Tests: Activate components like fuel pumps, injectors, cooling fans, door locks, and valves

🛠️ Advanced Coding & Adaptations

• Module Telecoding: Configure or replace ECUs (engine, BSI, airbags, ABS, etc.) to match vehicle equipment
• Adaptation Procedures: Perform relearning processes after repairs (throttle body, steering angle sensor, EGR, etc.)
• Key Programming: Add or synchronize keys and remote controls
• BSI Configuration: Modify vehicle settings and resolve electrical inconsistencies

Hardware Quality – Golden Full Chip 921815C

This version features the Golden Full Chip design, built for maximum reliability and protection during diagnostics and programming.

• 12 Japanese NEC Relays: Ensure accurate switching between diagnostic lines
• 7 Optocouplers: Provide electrical isolation, protecting both vehicle ECU and laptop
• 921815C Firmware: Stable and fully compatible with Diagbox V7 and V9 versions
• High-Quality PCB: Reduces communication errors and prevents interface failures

Solving Common Citroen & Peugeot Problems

The Lexia 3 Diagbox is the essential tool for diagnosing and fixing PSA-specific issues:

• “Anti-Pollution Fault” / Engine Warning: Diagnose DPF/FAP system, perform forced regeneration, reset additive counters (Eolys)
• BSI Electrical Issues: Resolve central electronics faults such as random warnings, locking issues, or lighting problems
• Suspension Calibration: Adjust ride height and pressure on Citroen Hydractive suspension systems
• Gearbox Problems: Perform adaptation and relearning for AL4, EGS, and automatic transmissions
• Airbag & ABS Faults: Identify faulty sensors or modules and clear warning lights after repair
• Cooling Fan & Sensor Errors: Use live data and actuator tests to pinpoint failures quickly

Software Versions & System Requirements

We provide access to multiple Diagbox versions to ensure compatibility with different vehicles and operating systems.

• Diagbox V9.129 / V9.200:
  • Supports vehicles up to 2022
  • Runs via Virtual Machine (VM)
  • Compatible with Windows 7, 8, 10 (64-bit)
  • Includes support for newer PSA and Opel models
• Diagbox V7.83:
  • Ideal for older vehicles
  • Requires Windows 7 (32-bit) native installation
• Recommended Hardware Requirements:
  • Minimum 4GB RAM (8GB recommended for VM)
  • At least 30GB free disk space
  • CPU with virtualization support (for V9 versions)

Why Choose Lexia 3 Diagbox Full Chip

• Dealer-level diagnostics for Citroen, Peugeot, DS
• Full ECU programming, coding, and telecoding capabilities
• Stable Full Chip hardware with maximum compatibility
• Supports both old and modern vehicles (1995–2022)
• Essential for professional workshops and advanced users