BMW E60 LCI E90 335d 535d M57N2 286HP Engine ECU Kit Unit DDE 7805287 CAS3 Key

BMW E60 LCI E90 335d 535d M57N2 286HP Engine ECU Kit Unit DDE CAS3 Key is a professional solution for facelifted 3 and 5 series models, such as the BMW E60 LCI, E90 335d, or 535d with an automatic transmission. This set from the Electronic control modules and ECUs category allows for a seamless replacement of key diesel powertrain electronics, minimizing issues with matching and coding.

Specifications and technical data

• SKU: 7805287-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7805287
• Substitutable numbers: 7805287, 13617805287, 7810980, 13617810980, 7809955, 13617809955, 7808289, 13617808289, 7806379, 13617806379, 7806981, 13617806981, 7804844, 13617804844, 7805586, 13617805586, 0281013854, 0 281 013 854, 6943830, 61356943830
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Intended use and kit configuration

The offered set includes a DDE engine control unit compatible with the 286 HP M57N2 diesel engine, a CAS3 module responsible for start authorization, and a matched key. This configuration is particularly useful when replacing an engine, repairing electronics after damage, or resolving immobilizer issues in BMW 3 and 5 series vehicles with automatic transmissions and diesel engines.

Combining the DDE, CAS3, and key into one coherent set reduces the risk of software conflicts, facilitates adaptation to the vehicle, and speeds up the process of starting the car after major mechanical and electronic repairs.

Benefits of using the complete DDE + CAS3 + key set

Using a complete powertrain control set brings a number of practical benefits in BMW service:

• consistency of components responsible for starting and vehicle security,
• reduction of the need for deep programming and matching of multiple modules,
• easier powertrain diagnostics in case of previous communication issues between control units,
• possibility of effective vehicle repair after collisions or damage to the electrical installation.

For workshops specializing in the BMW brand and users planning major interventions in powertrain electronics, such a set is a practical and organized service solution.

Application in BMW diesel vehicles with automatic transmission

The presented set has been prepared for BMW cars with a diesel engine and an automatic transmission, in particular for the powerful 335d and 535d facelift versions. This type of configuration requires a precisely selected DDE controller that correctly cooperates with both the power unit and the automatic transmission, as well as other comfort and safety modules.

In practice, this means that when replacing or repairing powertrain electronics, you can maintain proper communication between the engine ECU, the CAS3 module, and the transmission, which translates into stable system operation, correct start/stop function performance, and no errors related to start authorization.

Characteristics of the used product

The offered set comes from dismantling and is sold as a used part, which allows for a significant reduction in repair costs compared to new components. At the same time, such OEM elements retain their factory operating characteristics, which is why they are frequently chosen by workshops specializing in the BMW brand.

Choosing a used DDE + CAS3 + key set is particularly beneficial for repairs of older 3 and 5 series models, where a reasonable budget is important, while maintaining the original electronic architecture of the vehicle is equally crucial.

Expert support and additional information

If you want to better understand how to take care of electronic modules in the BMW 3 and 5 series and how to safely use parts from dismantling when repairing the engine ECU or iDrive system, check out 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?.

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 controllers, engine management modules, or systems cooperating with the immobilizer, check the available parts in the Electronic control modules and ECUs BMW category.