Mercedes C209 CLK500 5.0 306HP M113.968 Engine ECU Kit A1131538679 Key Lock

Mercedes C209 CLK500 5.0 306HP M113.968 Engine ECU Kit is an advanced component from the Electronic control modules and ECUs group, designed for vehicles with an automatic transmission. The kit ensures the consistency of the powertrain electronics, immobilizer, and starting system, which significantly facilitates professional repair or replacement of the factory ECU.

Specifications and technical data

• SKU: A1131538679-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1131538679
• Substitutable numbers: A1131538679, A 113 153 86 79, 0261208920, 0 261 208 920, A2095452108, A 209 545 21 08, A2034621130, A 203 462 11 30
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Application and function in the powertrain

The presented Mercedes C209 CLK500 5.0 306HP M113.968 Engine ECU Kit is designed to work with the M113.968 engine in the Mercedes C209 CLK500 5.0 306HP model, operating in a configuration with an automatic transmission. The ECU manages key engine performance parameters, such as fuel dosage, injection timing, starting strategy, and communication with other vehicle modules, which directly affects the engine's refinement, performance, and operational safety.

Thanks to the integrated link with the immobilizer and mechanical lock components, the kit allows for the restoration of the vehicle's original electronic configuration without the need for deep programming intervention. This solution is particularly beneficial when replacing a damaged ECU after a failure or flooding of the electrical system.

Benefits of using a complete ECU, key, and lock kit

Choosing a complete engine control unit kit with a key and lock brings a number of practical benefits in the service process:

• consistency of powertrain electronics and vehicle security (ECU, immobilizer, key, lock),
• reduced need for adaptation and programming compared to installing a single ECU,
• maintaining correct communication with the automatic transmission and other comfort and safety modules,
• the ability to restore full vehicle functionality after damage to the original engine control system.

For workshops specializing in the Mercedes brand and users looking for a technically matched solution, such a kit provides a practical base for further vehicle configuration in accordance with the manufacturer's requirements.

Product characteristics and condition

The offered set belongs to the Electronic control modules and ECUs group and comes from dismantling, which allows for economical repair while maintaining the vehicle's original electrical architecture. The used nature of the item means that it is a part from a previously operated car, which in practice often translates into good compatibility with the factory installation and the maintenance of operating parameters consistent with the manufacturer's assumptions.

In the case of installation in a Mercedes C209 CLK500 5.0 306HP with an M113.968 engine and automatic transmission, using a complete Mercedes C209 CLK500 5.0 306HP M113.968 Engine ECU Kit can significantly shorten diagnostic time and reduce the risk of vehicle starting problems after replacing the electronics.

Installation and operational tips

Before installation, it is recommended to verify the compatibility of the vehicle configuration (engine type, transmission type, additional equipment) with the kit parameters, as well as to perform a full computer diagnostic after installation. Professional installation at a specialized service center dealing with Mercedes electronics will allow you to fully utilize the potential of the kit and ensure stable operation of the powertrain.

For vehicles that previously experienced problems with starting, communication with modules, or ECU errors, using a complete Mercedes C209 CLK500 5.0 306HP M113.968 Engine ECU Kit can be an effective method of restoring proper system operation without the need for deep interference with the wiring harness.

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

For a broader look at automotive electronics and practical tips on working with used control modules, it is worth reading an article describing the servicing of multimedia systems and controllers in premium class vehicles: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using dismantled parts?