Mercedes C140 722.6 Automatic Transmission Mechatronics Module CL420 A1402701161

The Mercedes C140 722.6 Automatic Transmission Mechatronics CL420 is a specialized hydraulic-electronic module designed for automatic transmissions in luxury class models. This component is responsible for precise gear shifting control, ensuring smooth automatic operation and proper integration with the vehicle's systems.

Specifications and technical data

• SKU: A1402701161
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1402701161
• Substitutable numbers: A1402701161, A 140 270 11 61
• Gearbox type: Automatic
• Category: Automatic Transmission Parts

Purpose and Function of 722.6 Mechatronics

The 722.6 automatic transmission mechatronics in the Mercedes CL420 with C140 body is a key sub-assembly responsible for controlling the transmission's operation. It combines a valve body with an electro-valve system and control electronics, enabling:

• Hydraulic pressure control in individual transmission circuits.
• Precise gear engagement based on load, speed, and driving mode.
• Coordination of the automatic transmission with other vehicle systems, such as the engine control unit or safety systems.

This allows the 722.6 transmission to operate stably, with predictable gear shifting characteristics, which is particularly important in a heavy, powerful CL-class coupe.

Benefits of Using Genuine Mercedes Mechatronics

Choosing a component from the genuine Mercedes parts family allows you to maintain the factory performance parameters of the automatic transmission. In practice, this means:

• Proper fit for the 722.6 transmission used in the Mercedes CL420 C140, without the need for modifications.
• Compatibility with the control software designed for this generation of automatic transmissions.
• Stable hydraulic system operation while maintaining correct working pressures.

A transmission control system configured in this way helps reduce the risk of jerks, shifting delays, or incorrect gear selection during driving.

Application in Automatic Transmissions

The mechatronics presented belongs to the category of Parts for Automatic Transmissions and is designed for use with automatic transmissions. In practice, it is responsible for:

• Implementing the gear shifting strategy programmed by the manufacturer.
• Responding to sensor signals (position, speed, load), which translates to selecting the appropriate gear ratio.
• Protecting the transmission through emergency modes in case of detected malfunctions.

For the user, this means more predictable vehicle behavior, better automatic transmission refinement, and the ability to utilize the full potential of the CL420's powertrain.

Product Characteristics and Condition

The offered mechatronics comes from a vehicle of the brand designated in the specification as Mercedes-Benz OE, confirming its factory origin. The component is in the condition described in the specification table as used, which is typical for original components removed from donor vehicles.

To ensure correct part selection, you can use the designations visible in the specification section, such as the OEM part number and available interchangeable numbers. This facilitates verification of compatibility with the specific version of the automatic transmission used in a given Mercedes CL C140 model.

Selection and Additional Technical Materials

Before purchasing, it is advisable to ensure that the transmission installed in the vehicle is an automatic transmission from the 722.6 family, and to compare the designations with the data in the specification. If in doubt, a visual comparison of the mechatronics with the currently installed module may also be helpful.

If you are interested in other Mercedes automatic transmission parts, check out our dedicated category: Mercedes automatic transmission parts. There you will find a wide selection of hydraulic and electronic components for various models of this brand.

For drivers using four-wheel drive systems, an article explaining the interaction of transmissions with AWD systems may be useful: xDrive, 4Matic, quattro or 4Motion – comparison of AWD drives from BMW, Mercedes, Audi and VW. It helps to better understand the relationships between the gearbox, mechatronics, and drivetrain systems.

For those planning a more extensive transmission service, we also recommend the guide: Gearbox: Manual, Automatic or DSG – Common Faults and Used Gearbox Buying Guide, which discusses typical signs of wear and practical tips for selecting used components.