BMW 1 3 Series E87 E90 N45 116i 316i Petrol ECU KIT DME 7550688 + CAS2 + Key

BMW 1 3 Series E87 E90 N45 116i 316i Petrol ECU KIT DME + CAS2 + Key is a solution prepared for professional control system repairs in models with the N45 unit, such as the BMW 1 Series E87 and 3 Series E90. The set allows for a cohesive replacement of the ignition and starting control electronics, which facilitates restoring the proper operation of the petrol engine and eliminates immobilizer issues.

Specifications and technical data

• SKU: 7550688-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7550688
• Substitutable numbers: 12147550688, 7550688, 12147568427, 7568427, 12147546880121475632781214754901912147557810, 7546880756327875490197557810, 12147563276121475506961214754664212147549021, 7563276755069675466427549021, 12147559418121475642661214755941412147550694, 7559418, 12147545046, 7545046
• Fuel type: Petrol
• Category: ECUs & Computer Modules

Purpose and function of the BMW 1 3 Series E87 E90 N45 116i 316i Petrol ECU KIT DME + CAS2 + Key

The presented set includes an electronic petrol engine control module, a CAS2 module responsible for start authorization, and a matched key. This configuration is particularly useful when replacing a damaged controller in BMW vehicles with an N45 engine, where compatibility between the DME controller, security system, and the transponder in the key is required.

Combining these elements into one set minimizes the risk of immobilizer coding issues, speeds up the service process, and allows you to focus on the correct configuration of the petrol unit's operating parameters.

Benefits of using an original BMW module

Using an original BMW electronic control module ensures the preservation of factory engine control logic, which translates into stable engine operation, correct accessory support, and compliance with OBD diagnostics. The DME module works with the petrol engine's injection and ignition system, while the CAS2 module supervises key authorization and communication with other controllers in the vehicle.

In practice, this means, among other things:

• consistent operation of the vehicle's starting and security system,
• easier adaptation in a vehicle with the same type of power unit,
• possibility of full diagnostics using factory service software.

Technical characteristics and compatibility

The set has been designed to work with a petrol engine, which is crucial when selecting a controller for a specific vehicle version. The presence of a dedicated CAS2 module and key allows for maintaining the integrity of the security system, which is particularly important when replacing the set of electronics after a failure or mechanical damage.

The elements included in the set come from a BMW vehicle and belong to the Electronic control modules and controllers group, making them structurally matched to the electrical architecture of the 1 Series E87 and 3 Series E90 models with the N45 unit.

Condition, service application, and installation tips

The product is offered as used, which makes it an attractive cost-effective alternative compared to new controllers, while maintaining the original BMW specification. The BMW 1 3 Series E87 E90 N45 116i 316i Petrol ECU KIT DME + CAS2 + Key will work well for both accident repairs and troubleshooting issues related to lack of controller communication, starting problems, or immobilizer errors.

Installation in a specialized service center equipped with appropriate diagnostic software is recommended. This enables proper adaptation of the set to a specific vehicle, including equipment configuration and verification of correct communication with other controllers in the vehicle's network.

Control system expansion and technical knowledge

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

For a better understanding of how original electronic modules influence the character and handling of premium class cars, it is worth reading an article describing the role of factory components in the Audi brand – you can find it here: Audi and pure emotion – how used parts help maintain the brand's DNA.