launch x431 PRO3 ACE Diagnostic Tool

Supports Online ECU Coding, Topology Map, CAN FD, DoIP, SGW, and 38+ Service Functions

The launch X-431 PRO3 ACE is a 10.1-inch advanced smart car diagnostic device developed on the Android 10.0 system. It features a 2.0GHz quad-core high-efficiency processor, 4GB RAM + 64GB ROM large storage capacity, and a high-endurance battery for faster, more stable, and longer-lasting performance. It supports both passenger car diagnostics and commercial vehicle expansion modules, delivering enhanced diagnostic capabilities.

Key Highlights

1. Equipped with DBScar VII Bluetooth diagnostic connector supporting CAN FD and DoIP protocols
2. Full system diagnostics + bi-directional control + 38+ service functions
3. Supports ECU offline/online coding, Refresh Hidden Features, and VAG Guided Function
4. Supports FCA AutoAuth access
5. Supports Topology mapping
6. Compatible with 24V Truck Module, endoscopes, battery detection, oscilloscopes, sensors, IMMO programmer, and other expansion modules to enhance diagnostic functionality
7. Includes 2 years of free software updates
8. Offers the same functions as the launch x431 Pro3 APEX
9. Multi-language support: 25 languages including Italian, English, German, Japanese, Russian, French, Spanish, Portuguese, Polish, Turkish, Dutch, Greek, Hungarian, Arabic, Danish, Korean, Persian, Serbian, Finnish, Swedish, Czech, Simplified Chinese, and Traditional Chinese—eliminating language barriers with free switching

Supported Expansion Modules

• x431 HDIII: Expands diagnostic services to 24V heavy-duty trucks
• X431 BST360: Monitors vehicle battery health status
• Video Scope: Inspects hard-to-reach areas such as pumps, engines, and pipes
• X431-PROG3: Enables advanced key programming and module cloning
• ADAS Mobile/PRO: Calibrates driver assistance systems
• WiFi Printer: Prints diagnostic reports, live data, and other information quickly
• Scopebox: Quickly acquires circuit signals
• Sensorbox: Simulates vehicle sensor faults
• Multimeter: Measures physical parameters such as voltage, resistance, and frequency

LAUNCH DOIP Adapter Cable: Required for DOIP functions.

Version Notice

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

X431 Pro3 ACE vs X431 Pro3s+ V2.0

Beyond aesthetic differences, the X431 Pro3 ACE introduces new features including topology diagram, CAN FD protocol support, oscilloscope expansion, key programmer expansion, and 38+ reset functions. Hardware upgrades include larger memory and the updated Android 10 system, resulting in faster operation and more comprehensive diagnostic software.

Launch X431 Pro3 ACE Core Functions

All System Diagnosis

The LAUNCH X431 PRO3 ACE is a cost-effective automotive scanner offering OE-level diagnostics across all available electronic systems. It can read/clear codes, display data streams, and retrieve control module information for ECM, ABS, SRS, TCM, EPB, TPMS, SAS, A/C, BMS, ESP, and more.

OBD2 Full Function Support

Supports full OBD2 functions to turn off instrument fault indicators and perform:

• Read/clear diagnostic trouble codes (DTCs)
• O2 sensor testing
• I/M readiness checks
• On-board monitor tests
• Live data stream reading
• Freeze frame data display
• EVAP system testing
• Vehicle information retrieval (VIN, Calibration ID, Calibration Verification Numbers)

Full System Diagnostics Coverage

Comprehensive support for: engines, Automatic Transmission, Airbags, IMMObilizer, Key Coding, ABS, Cruise Control, Instruments, Self-Leveling Suspension, Seats, Doors, Gateway, Steering Angle, Air Suspension, Body Systems, Electronic Power Steering & Motor Assisted Systems, Power Steering, Tyre Pressure, Rain Sensors, 4WD System Stabilizer, Intelligent Parking Assist, Door Motors, Audio Systems, Air Conditioning, Tiptronic, Anti-Theft, Soft Top, Headlamp Leveling, Central Locking, Automatic Clutch, DPF Reset, Electric Windows, Plip Programming, Heated Rear Window, Xenon Headlights, Wash/Wipe Systems, Fuel Burning Heater, Transfer Box, Seat Memory, Oil Reset, Sliding Doors, Electronic Throttle, Navigation System, Rollover Sensor, Multi-Function Steering Wheel, Auxiliary Heating, Electronic Parking Brake, Clutch Electronics, and more.

Full 10-Mode OBDII/EOBD/JOBD Diagnostic Functions

1. Reading Codes: Displays detailed descriptions of Diagnostic Trouble Codes (DTCs)
2. Erasing Codes & Reset: Turns off the Check engine Light (MIL), clears codes, and resets monitors
3. Data Stream: Reads and displays live ECU/PCM data streams with graphical plotting and freeze frame data storage
4. I/M Readiness Status: Indicates whether emissions-related systems are ready for inspection
5. Read Live Data Stream: Shows continuous vehicle data in live graphical (waveform) format
6. View Freeze Frame Data: Displays vehicle conditions recorded at the time of an emission-related fault
7. O2 Sensor Test: Retrieves and displays recent O2 sensor monitor test results
8. On-Board Monitor Test: Shows test results for emission-related powertrain components
9. Read Vehicle Information: Displays VIN, CID (Calibration ID), CVN (Calibration Verification Number), etc.
10. Component Test: Actuates specific vehicle components to test operability via scanner commands

ECU Coding

The advanced ECU coding function re-flashes vehicle control modules, enabling software updates and reprogramming of adaptive data after repairs or replacements—addressing issues related to drivability, fuel efficiency, power loss, fault codes, and mechanical part durability. Note: ECU coding is not universal; verify compatibility using your VIN before purchase.

• Online Coding: Compatible with VW, Audi, Skoda, Ford, Lincoln, Mazda ONLY
• Offline Coding: Compatible with Benz, BMW, Ford, Mazda, Jaguar, Vauxhall, Opel, etc.
• Refresh Hidden Features (Personalization)
• Component Matching: Includes matching, relearning, and calibration
• Customize OE Settings: Supports retrofitting and modification

Note: Coding functions vary by model. Confirm compatibility by sending your VIN.

Bi-Directional Control

Enables Active Tests to access vehicle-specific subsystems and components. The tool sends commands to the ECU to drive actuators, allowing system integrity verification through ECU data or actuator observation. Examples include actuating relays, injectors, coils, solenoid valves, and EGR valves to observe real-time responses (e.g., idle changes, oxygen sensor voltage shifts). Note: Active tests are not universal—check VIN compatibility before purchase. Available tests depend on manufacturer, year, and model, and only supported tests appear in the menu.

Example Active Tests for Efficient Troubleshooting

• Injector Buzz Test
• Fuel Pump & Valve Tests
• A/C Compressor Clutch Activation
• Wiper ON/OFF Control
• Throttle Modulation (ON/OFF)
• Acceleration Device Test

38+ Reset Functions

CAN FD and DoIP Protocol Support

CAN FD

The only product in this price range compatible with CAN-FD protocol, supporting latest GM vehicles manufactured after 2020. Uses advanced CRC algorithms to handle CAN frame data from 8 to 64 bytes—faster than competitors and reducing undetected error risks for an improved user experience.

Supported models include: Chevrolet Onix (2020–2021), Tracker (2020), Suburban (2021), Tahoe (2021); Buick; Cadillac Escalade (2021); GMC Yukon (2021), Yukon XL (2021); Holden; Daewoo; Alpheon; Ravon; Pontiac; Saturn; Hummer.

DoIP (Diagnostics over Internet Protocol)

Uses UDS over TCP/IP and Ethernet for significantly higher data rates than CAN—saving time and costs during complex diagnostics and flash applications. Compatible with: BMW (F & G chassis), Volvo (2018+), Land Rover & Jaguar (2017+).

Note: This list covers CAN FD and DoIP-supported vehicles. The X431 PRO3 ACE supports 100+ brands including BMW, VW, Ford, and more. See full car list below.

FCA AutoAuth Access: Bypass SGW in FCA Vehicles

Grants access to the Security Gateway Module (SGW) on 2018+ Fiat Chrysler vehicles, enabling code clearing, bi-directional active tests, actuations, relearns, IMMO key programming (PIN retrieval & writing), and ADAS calibration assistance.

*Note: Requires software update. As of November 23, 2022, all FCA-supported regions require a paid AutoAuth account. Payment is processed directly by AutoAuth—LAUNCH is not involved. Contact us for details.

Remote Diagnosis

Enables real-time communication between devices or between device and computer for remote vehicle diagnostics—allowing technicians to diagnose vehicles from thousands of miles away.

Auto VIN Recognition

“Smart Diagnosis” feature quickly reads the vehicle VIN, accelerates entry into diagnosis mode, and retrieves historical diagnosis records.

Additional Features

IMMO Function

Similar to X431 V’s anti-theft system, it can add new keys and disable lost keys—but only for select 3.5th-gen Volkswagen, Audi, Skoda, Seat, and some Asian vehicles.

4-in-1 Live Data Stream

Displays live sensor data with intuitive graphing for performance monitoring and abnormal parameter analysis. Records up to 4 simultaneous PIDs. Playback supports text or graph formats—either two independent graphs or four combined PIDs—with scrollable, pausable timeline controls for detailed review.

One-Click Report Generation

Automatically generates and stores comprehensive vehicle diagnostic reports to assist mechanics with inspection and maintenance.

Print and Share Reports

Reports save troubleshooting time—ideal for repair shops. Mechanics can print reports for customers or share via email.

Error Code Explanations

Tap “Code Search” to access Google-based analysis of trouble codes, including root causes and linked YouTube tutorials.

Online DTC Code Search

Search DTC definitions directly on Google for additional help and diagnostic tips.

Supported Vehicle List

Covers 10,000+ models from America, Europe, Asia (including Russian, Chinese, Indian, Malaysian, Australian, Brazilian, and Latin American brands), encompassing cars, SUVs, minivans, 12V light-duty trucks, gasoline, and diesel vehicles.

European Brands

Audi, Mercedes-Benz, Maybach, BMW, Mini, HCBMW, Rolls-Royce, Citroën, Fukang, Ferrari, Fiat, Abbas, Lancia, Alfa Romeo, Nanjing Fiat, GAZ, Land Rover, Jaguar, Maserati, Opel, GMSA, Vauxhall, Peugeot, DF Peugeot, Porsche, Renault, Dacia, Rover, Saab, Škoda, SEAT, Smart, Transporter & V-Class, VAZ, Volvo, Volkswagen, Bentley, Bugatti

American Brands

Brazil Fiat, Brazil GM, Chrysler, Dodge, Jeep, GM, Buick, Cadillac, Chevrolet, Ford, China Ford, Lincoln, European Ford

Asian Brands

Daewoo, Daihatsu, Honda, Acura, DF Honda, GZ Honda, Hyundai, IKCO, India Mahindra, India Maruti, India Tata, JP Isuzu, TL Isuzu, Kia, Luxgen, Mahindra, Malaysia Perodua, Malaysia Proton, Maruti, Mazda, YQ Mazda, Mitsubishi, Nissan, Infiniti, DF Nissan, Perodua, Proton, SAIPA, SsangYong, Subaru, Suzuki, Tata, Toyota, Lexus, TJ Toyota

Australian Brands

Australia Ford, Australia Holden

Chinese Brands

Chang’an, Great Wall (ChangCheng), Chenghe, DR Automotive, ECUADI, BYD, Foton, Hafei, Haima, Brilliance, Jiangling, Iveco, JAC (Refine General), Gonow Auto, Xiamen Golden Dragon, Kowloon, Lifan, GAC Group (GSMW), SAIC Chase, MVW Automotive, Chery, SAIC & MG, SGM, Chevrolet China, Buick China, Cadillac China, Tianjin FAW, XinKai, ZhongShun, Zotye, ZX Auto (Zhongxing)

X431 PRO3 ACE Technical Specifications

• Operating System: Android 10.0
• Processor: 2.0GHz quad-core
• Memory: 4GB RAM
• Storage: 64GB ROM
• Display: 10.1-inch LCD screen
• Resolution: 1280 × 800
• Camera: Rear 8-megapixel
• Wi-Fi: 2.4GHz / 5GHz
• Battery: 6300mAh, 7.6V
• Operating Temperature: 0°C – 50°C
• Dimensions: 435 × 305 × 372 mm