Mercedes SLK200 R171 271.944 163HP Engine ECU Kit Key Lock A2711534691 Automatic

Mercedes SLK200 R171 271.944 163HP Engine ECU Kit Key Lock Automatic is a precisely selected, used electronic set designed for a petrol engine with an automatic transmission. By maintaining the factory configuration of the components, it ensures consistent powertrain operation and facilitates the restoration of full vehicle functionality following an electronic failure.

Specifications and technical data

• SKU: A2711534691-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2711534691
• Substitutable numbers: A2711534691, A 271 153 46 91, A0014466902, A 001 446 69 02, 5WK90548, A2034621130, A2115452308
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Application and purpose of the ECU kit

The presented engine control unit kit with key and lock has been developed for the Mercedes SLK200 R171 generation model with a petrol engine and automatic transmission. Integrating these components into a single set helps reduce issues with immobilizer matching, key synchronization, and vehicle network communication, which is particularly important in modern electronic systems.

A kit configured in this way is suitable both for replacing a damaged controller and for professional engine control system repairs, where maintaining component compatibility within a single vehicle is crucial.

Benefits of using an original control module

Choosing a used, original ECU kit with key and lock allows for the preservation of the factory operating logic of the powertrain and automatic transmission. A properly selected controller supports:

• stable operation of the petrol engine across the full load range,
• proper cooperation with the automatic transmission,
• correct communication with other modules in the vehicle.

This makes it possible to restore correct driving characteristics without the need for costly adaptation of aftermarket replacements of uncertain origin. The original control module also provides greater predictability of vehicle behavior over long-term operation.

Operating characteristics with a petrol engine and automatic transmission

The ECU kit is designed to work with a petrol unit, which translates into appropriate injection maps, ignition timing, and engine accessory control strategies. In combination with an automatic transmission, the controller coordinates:

• gear selection based on load and driving style,
• smoothness of gear changes,
• powertrain response to driver inputs.

Such tuning is significant for both driving comfort and the durability of mechanical components, as the electronics monitor key powertrain operating parameters.

Condition, verification, and selection of used electronics

The offered set belongs to the Electronic control modules and controllers category and is a used item, which allows for a significant reduction in repair costs compared to new components. Before installation, it is recommended to verify compatibility with the specific vehicle configuration and perform computer diagnostics after installation to confirm correct communication within the vehicle network.

If you want to make an informed decision on when it is worth choosing a used engine controller or other electronic module, check out our guide: The second life of electronics – when is it worth opting for used engine controllers, comfort modules, and parking sensors?

Expanding electronic upgrades in your Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional control modules, transmission controllers, or auxiliary system controllers, check the available parts in the Mercedes electronic control modules and controllers category.