The Launch X431 MCU3 Adapter (Adapter Board Code: 307140131) is an essential expansion kit for the X-PROG 3 (GIII). It is specifically designed to handle Mercedes-Benz All Keys Lost (AKL) scenarios and advanced ECU/TCU reading and cloning.
Key Capabilities
Mercedes-Benz Support: Facilitates “All Keys Lost” programming and direct reading of ECU and TCU data to generate new keys.
ECU/TCU Operations: Supports advanced cloning and replacement for platforms including VW/Audi MQB, BMW continental MSV90, and specialized Mercedes systems like MED9.7 and VGS NAG2.
Bench Mode: Allows for reading and writing data directly from the control unit without full disassembly.
Broad Functionality: Also used for ADAS calibration, BMW E/F/G chassis gearbox operations, and Porsche Cayenne (2011–2017) key programming.
Compatibility and Requirements
Mandatory Hardware: This is an optional adapter and is not included with the standard X-PROG 3 kit. You must already own the X-PROG 3 (GIII) to use it.
Diagnostic Tablets: Works with the Launch X431 series, including X431 V, X431 PRO 5, X431 PAD V, and PAD VII.
Cloning Restriction: While basic reading works with most tablets, ECU/TCU cloning generally requires higher-end series like the PAD or IMMO tablet series (e.g., IMMO Pro, IMMO Elite).
Availability in UAE
The MCU3 Adapter and the X-PROG 3 bundle are available through several local and international retailers:
Amazon.ae: Lists the LAUNCH MCU3 Immobilizer Kit for various compatible X431 models.
Would you like to see a specific wiring diagram for a particular Mercedes engine model, or do you need help identifying which X431 tablet is best for your cloning needs?
The Launch X431 MCU3 Adapter for the GIII X-PROG 3 advanced immobilizer is specifically designed to support Mercedes-Benz all keys lost scenarios and advanced ECU/TCU reading. It is available in Dubai from automotive specialist retailers like Jabedul Dewan Trading Co, LLC.
Product Features and Capabilities
The MCU3 adapter must be used in conjunction with the Launch X-PROG 3 (GIII) to access expanded functions:
Mercedes-Benz Support: Enables programming for all keys lost situations and supports infrared key reading.
ECU/TCU Operations: Allows for reading, writing, and cloning of new Engine and Gearbox (TCU) ECUs without disassembling the shell.
Additional Functions: Supports ADAS (Advanced Driving Assist System), BMW Continental MSV90 engine ECU replacement, and Volkswagen/Audi MQB gearbox replacement.
Compatibility: Works with Launch X-431 series scanners, including the X431 V, X431 V+, Pro5, Pro3S, PAD V, and PAD VII.
Purchase Information in Dubai
Jabedul Dewan Trading Co, LLC is an authorized dealer and importer of automotive diagnostic scanners and key programmers based in Dubai.
Location: Nesto Hypermarket, Meena Bazaar – Shop F98 – 3 64 St – Bur Dubai.
Contact: +971 50 997 0171.
Operating Hours: Open daily from 9:00 AM to 11:00 PM.




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