ZF 6009.054.174 CONTROL UNIT for WG100 | OEM Genuine Part

Overview

The ZF 6009.054.174 CONTROL UNIT is a precision-engineered electronic module designed specifically for the WG 100 series of automatic transmissions. This OEM genuine part governs hydraulic pressure modulation and shift timing, ensuring smooth gear transitions under heavy load conditions. Located within the valve body assembly, the control unit interprets input from the transmission control module (TCM) to regulate clutch and brake application. The SKU 6009.054.174 is a direct factory replacement, eliminating the need for aftermarket adaptation. For optimal sealing integrity, this unit is often installed alongside a new 0634303928: O-RING to prevent fluid bypass at the interface.

Symptoms of Failure

• Erratic shifting or delayed engagement – A failing control unit can cause harsh upshifts or delayed downshifts, especially when the transmission is cold. This often manifests as a “shift flare” between gears.
• Intermittent loss of gear selection – The transmission may suddenly drop into neutral or fail to engage reverse, triggering a diagnostic trouble code (DTC) related to solenoid circuit faults.
• Transmission overheating with no warning – When the control unit fails to regulate line pressure correctly, internal friction increases, leading to elevated fluid temperatures without a corresponding dash warning.
• Fluid contamination from internal wear – A degraded control unit can allow debris to enter the hydraulic circuit. This often accompanies failure of the 4651301029: HOUSING, which may crack under thermal stress.

Technical Specifications

Compatibility

This control unit is engineered for the ZF WG100 series, but it also cross-references with several other ZF transmission models that share the same valve body architecture. Verified compatible models include the WG180, WG200, and WG250 series, provided the transmission uses a 12V electrical system. It is not compatible with the older WG80 series without modification. For proper installation, ensure the 4651101007: TRANSMISSION HOUSING is free of cracks, and replace the 4651301024: HOUSING if any corrosion is present on the mounting flange.

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