Mercedes W163 Automatic Gearbox Control Module ECU 112970 3.7 Petrol A0325454432

Mercedes W163 Automatic Gearbox Control Module ECU 112970 3.7 Petrol is a specialized electronic module designed to work with the automatic transmission in Mercedes vehicles with a petrol engine. It is responsible for precise control of the gearbox operation, ensuring smooth gear shifts and stable performance of the drivetrain. Thanks to its factory design from the Electronic control modules and controllers group, the module maintains full compatibility with the vehicle's electrical architecture.

Specifications and technical data

• SKU: A0325454432
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0325454432
• Substitutable numbers: A0325454432, A 032 545 44 32, A 030 545 26 32, A0305452632, A 030 545 46 32, A0305454632, A 034 545 46 32, A0345454632, A 035 545 37 32, A0355453732, A 035 545 38 32, A0355453832
• Fuel type: Petrol
• Gearbox type: Automatic
• Part type: Transmission Control Module
• Category: ECUs & Computer Modules

Purpose and function of the controller

The presented controller is dedicated to automatic transmission systems in the Mercedes W163 class with a petrol engine. Its task is to analyze signals from vehicle sensors and dynamically adjust the gear shift strategy to driving conditions, engine load, and driving style.

The module communicates with the vehicle's electrical system, coordinating the gearbox operation with other onboard systems. A properly selected controller allows for maintaining the consistency of the drivetrain operation, reducing jerking during gear changes, and improving the overall refinement of the powertrain.

Benefits of using an original module

Using a controller from the Electronic control modules and controllers group dedicated to a specific petrol engine and automatic transmission configuration offers a number of practical benefits:

• preservation of factory gear shift logic and transmission characteristics,
• consistency with the software of other controllers in the vehicle,
• reduced risk of communication errors and transmission limp mode,
• possibility of diagnostics using standard Mercedes service tools.

For workshops and users, this means more predictable installation and easier matching to the existing vehicle configuration, without the need to experiment with universal replacements.

Technical characteristics and compatibility

The controller belongs to a specialized group of modules intended for vehicles with a petrol engine and automatic transmission. Proper selection based on the OEM number and interchangeable numbers allows it to be matched to the specific equipment version and model year of the car. In practice, it is crucial to verify compatibility with your vehicle based on catalog data or service documentation.

As an electronic component, the module requires a professional approach during installation: correct wiring connection, maintaining connector cleanliness, and – if necessary – adaptation or coding using an appropriate diagnostic tester. A correctly selected and configured controller allows for restoring full gearbox functionality after the failure of the previous module.

Product condition and service application

The offered controller is a used item, which makes it an attractive service solution for vehicles used on a daily basis. Replacing a damaged module with a functional unit from the secondary market allows for significantly reducing repair costs compared to purchasing a new unit, while maintaining structural compatibility with the factory system.

This solution is particularly beneficial in the case of older Mercedes generations, where the availability of new components is sometimes limited, and the priority is to restore proper gearbox operation within a reasonable budget. A properly selected controller allows you to keep the vehicle in full working order without interfering with the transmission mechanics.

Selection by numbers and technical support

When choosing modules from the Electronic control modules and controllers group, it is crucial to match them by OEM number and reference numbers. Proper identification guarantees hardware and software compatibility with a specific Mercedes version. Detailed information regarding selection by numbers, HW/SW compatibility verification, and practical aspects of installation can be found in the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.

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