Actros MP4 MP5 Seat Adjustment Module

Typical Defects:
The seat does not lift or does not respond to commands
The control unit fails to operate the compressor/pillow valves

The replacement Mercedes with OE code A0004460411 is an electronic control module for a suspension seat produced by ISRI and installed on Mercedes industrial vehicles and buses.
This is the control unit for the driver's seat: it manages the air supply and discharge of the seat, the adjustment functions, and, depending on the configuration, communicates with the vehicle's electrical system.

Technical characteristics

• Manufacturer: ISRI for Mercedes-Benz vehicle.
• Type: pneumatic suspension driver's seat for industrial vehicles, buses, and some light commercial Mercedes vehicles.
• Power supply: 12 V or 24 V network depending on the type of vehicle.
• Installation: mounted directly on the structure of the suspension seat (often under the seat, base side) or immediately adjacent, connected to the controls on the seat.

DIPA can intervene to overhaul these components thanks to its experience and expertise.

Functionality

• Management of air supply to the suspension seat, controlling the filling and discharge of the pneumatic cushion.
• Adjustment of the seat level/height based on the driver's weight and selected settings.
• Actuation of internal solenoid valves in response to mechanical/electrical commands on the seat (levers, buttons, ISRI potentiometer).
• Possible management of additional seat functions (depending on the configuration), such as adjustment of stiffness/damping and, on some variants, integration with safety or comfort systems.
• Electrical interface with the vehicle to provide and receive status signals

Model applications

• Mercedes-Benz Actros MP4/MP5

Typical defects

• The seat does not raise or does not respond to commands.
• The control unit fails to operate the compressor/cushion valves.

Final conclusions

The module Mercedes OE A0004460411 is a key component of the ISRI pneumatic suspension driver's seat on trucks, buses, and some Mercedes commercial vehicles. It integrates electronic control to manage seat pressure, height adjustment, and driver comfort.

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