Genuine OEM Mercedes-Benz ISM / DSM Gearbox Transmission Control Unit (TCU)
Removed from a Mercedes-Benz W221 S-Class and W164 ML-Class. This unit is designed for vehicles equipped with transmission control module part number A004 446 03 10.

Part Number: A004 446 03 10
Model Application:

• 2006–2013 Mercedes-Benz S-Class (W221)

• 2006–2011 Mercedes-Benz ML-Class (W164)

• Also compatible with certain GL-Class (X164) and R-Class (W251) models using the same TCU

Function: ISM/DSM (Intelligent Servo Module / Direct Select Module) — controls gear selection and transmission operations for automatic gearbox systems.

Condition: Used, OEM, fully tested, and in good working condition
Authenticity: 100% Genuine Mercedes-Benz factory part

Please Note:

• Buyer must verify compatibility by matching the part number or consulting a Mercedes-Benz dealer.

• May require programming or adaptation to the vehicle during installation.

• Photos show the actual unit you will receive.

Returns:
We accept returns within 14 days of delivery. Please contact us before sending any item back.

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