Mercedes R171 272.963 SLK350 272HP Engine Module ECU Kit A2721531291 3 Keys Lock

Mercedes R171 272.963 SLK350 272HP Engine Module ECU Kit is a solution designed for the 272 HP petrol unit with a 272.963 engine and automatic transmission. This engine control module kit allows for a consistent replacement of immobilizer and powertrain control components, minimizing the risk of vehicle starting issues and communication errors between subassemblies.

Specifications and technical data

• SKU: A2721533391-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2721533391
• Substitutable numbers: A2721533391, A 272 153 33 91, A0034467640, A 003 446 76 40, 0261209239, 0 261 209 239, A2115452308, A 211 545 23 08
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and configuration of the kit

The offered kit includes an engine control module for the Mercedes SLK350 R171 generation with a 272.963 engine producing 272 HP, compatible with an automatic transmission. The kit also includes a lock and three keys, which allows for maintaining the integrity of the vehicle's security system without the need to program individual components from scratch.

A set configured in this way is particularly useful when replacing a damaged controller in vehicles where engine electronics have failed or there are issues with key authorization. Using a single, matched kit reduces diagnostic time and facilitates workshop operations.

Benefits of using a complete ECU module

In the case of modern Mercedes vehicles, such as the SLK350 R171, the electronic engine control module is the central component managing the powertrain's operation. Its proper matching to the fuel type and transmission type is crucial for:

• stable operation of the petrol engine across the full load range,
• proper cooperation with the automatic transmission,
• correct communication with the vehicle's security system,
• maintaining factory performance parameters and operating standards.

Thanks to this kit, it is possible to restore the proper functioning of the powertrain without the need for tedious matching of individual components.

Application in service practice

The Mercedes R171 272.963 SLK350 272HP Engine Module ECU Kit will prove useful both in professional service centers specializing in the Mercedes brand and in specialized workshops dealing with automotive electronics. The kit allows you to:

• replace a damaged engine controller in vehicles with a 272.963 engine,
• minimize issues with matching the immobilizer and keys,
• reduce the number of programming operations required after installation.

This approach shortens repair time and reduces the risk of incompatibility between individual elements of the electronic system.

Category and compatibility with other elements

The presented product belongs to the Electronic control modules and controllers group, which are components responsible for advanced management of vehicle subassemblies. 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 transmission controllers, comfort modules, or safety system controllers, check the available parts in the Mercedes electronic control modules and controllers category.

Product condition and practical aspects

The offered kit comes from the secondary market, which allows for an economical restoration of the engine control system while maintaining the manufacturer's original specifications. The used ECU module, along with the matched lock and three keys, is a practical solution in situations where repairing the existing controller is uneconomical or technically impossible.

Proper matching to the petrol engine and automatic transmission in the SLK350 R171 model makes the kit particularly attractive for users who care about maintaining the performance characteristics typical for this powertrain version.

Substantive support and additional information

For a comparison of approaches to maintaining the premium brand character in the context of used electronic components, it is worth reading the article on our blog: Audi and pure emotion. How do used parts help maintain the brand's DNA?. Although it concerns a different brand, it well illustrates how properly selected original electronic modules allow for maintaining the vehicle's factory properties.