A66-19809-000 | Genuine Freightliner® M2 Electronic Chassis Module DEF Metering Unit This occurs when internal seals

This occurs when internal seals wear out

It processes signals from sensors and other components to control functions such as:

Signs of a Bad Air Dryer EXK160648SC:

Soluble organic fraction (SOF) of soot → burned off

leading to mold or mildew in the HVAC system or upholstery

A66-19809-000 | Genuine Freightliner® M2 Electronic Chassis Module DEF Metering Unit This occurs when internal sealsPart Number: A66 19809 000 Condition: New Manufacture Brand: Freightliner Related Part Numbers: EA66 19809 000, 66 19809 000, 06 75158 001 Description: A chassis control module also known as a chassis electronic control unit (ECU) or chassis multiplexing module is a key electronic component in commercial trucks and modern vehicles that manages and coordinates electrical signals and functions related to the chassis systems. M2 Electronic Chassis Module