Mercedes W177 A35 AMG 306HP 260.920 Engine ECU Kit A2649001200 Key BCM Automatic

Mercedes W177 A35 AMG 306HP 260.920 Engine ECU Kit is an advanced electronic set designed for the 306HP unit, prepared for use with an automatic transmission and a petrol engine. This is an OEM solution that allows for professional repair of the powertrain control system, maintaining factory operating logic and the consistency of all related vehicle systems.

Specifications and technical data

• SKU: A2649001200-3
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2649001200
• Substitutable numbers: A2649001200, A 264 900 12 00, 0261S22041, 0 261 S22 041, A2649011900, A 264 901 19 00, A2479005708, A 247 900 57 08, A2479001809, A 247 900 18 09
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU kit

The presented kit includes the engine control unit, the BCM body module, and the key, which enables comprehensive handling of the electronic control system in the Mercedes A-Class W177 generation, A35 AMG version. The kit is configured for a 306HP petrol engine, ensuring proper operating maps, accessory support, and communication with other vehicle modules.

Integration with the automatic transmission allows for correct data exchange between the ECU and the drivetrain, which translates into smooth gear shifts, stable operation in comfort and sport modes, and the correct functioning of driver assistance systems.

Benefits of using the original ECU kit

Using a complete, factory-original control kit in the A35 AMG allows for maintaining the consistency of software and powertrain operating parameters. In practice, this means:

• proper cooperation between the engine control unit, the BCM module, and the key,
• preservation of vehicle security functions,
• stable operation of comfort and safety systems related to body electronics,
• easier adaptation in the vehicle compared to random, unpaired modules.

For workshops specializing in the Mercedes brand, such a kit is a practical solution when replacing a damaged controller or performing advanced powertrain electronics repairs.

Technical characteristics and compatibility

The ECU, BCM, and key set has been designed to work with a petrol engine and an automatic transmission, which is crucial for the correct vehicle configuration. The kit should always be verified for compatibility with the specific equipment version and model year of the Mercedes W177 A35 AMG, as well as for matching the existing CAN network architecture in the car.

The presence of a dedicated key in the set facilitates the adaptation process in the vehicle, as it eliminates the need for time-consuming reconfiguration of some immobilizer functions and helps maintain the consistency of the start authorization system.

Condition and use in a professional service

The components included in the kit are sourced from dismantling and are intended for reinstallation by a specialized service or a workshop dealing with automotive electronics. This type of kit is particularly useful for:

• repairs after engine control unit damage,
• problems with communication between modules in the vehicle,
• the need to replace several powertrain control system components simultaneously.

For the end user, this means the possibility of restoring full functionality of the drivetrain while maintaining the factory operating parameters of the AMG unit.

Integration with other electronic modules

As an element of the Electronic control modules and ECUs category, this ECU, BCM, and key kit works with many vehicle systems – from engine management and the drivetrain to selected comfort and safety functions. A properly selected and configured kit minimizes the risk of communication errors, reduces the appearance of fault messages on the dashboard, and facilitates subsequent computer diagnostics.

If you are planning a comprehensive repair or upgrade of the engine control electronics area in your Mercedes and need other components from the same group, such as controllers, body modules, or drivetrain management systems, check the available parts in the Mercedes electronic control modules and ECUs category.

Expert support and additional information

When working with advanced premium vehicle electronics, it is worth using reliable sources of knowledge regarding control modules, their programming, and the selection of parts from dismantling. Example topics related to the diagnostics and repair of engine controllers and comfort modules in premium segment vehicles are discussed in the article Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using parts from dismantling?, which can provide valuable knowledge even when working with Mercedes electronics.

If you are considering a choice between new and used electronic components, the guide New or used? A comparison of costs and quality of car parts, discussing the differences in costs, durability, and cost-effectiveness of using parts from dismantling in a professional service, may also be helpful.