A2218702086 Mercedes W221 S-Class Rear Seat Control Module OEM Used & Tested

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Rear seat control module for Mercedes W221 S-Class, supplied as a used original unit with OEM number A2218702086. This electronic control unit is designed for the rear seat system in the Mercedes S-Class and serves as the dedicated controller for rear seat comfort and adjustment functions.

It manages commands within the rear seat system and coordinates the operation of powered seat features through the vehicle’s interior electronics network. In vehicles equipped with electrically adjustable rear seating, this module helps control seat movement and related comfort functions so rear passengers can use those features correctly and consistently.

Common signs of a faulty unit include rear seat adjustment not responding, intermittent operation, stored seat system faults, or loss of communication with the rear seat electronics. Some vehicles may also show inoperative rear comfort functions or memory-related issues when this control unit develops an internal fault.

This is a used original part removed from a vehicle and tested before sale. Please match OEM number A2218702086 before ordering. Professional installation is recommended, and coding, programming or adaptation may be required depending on vehicle equipment and system configuration.