ZF 6073.023.312 TCU ERGOPOWER M EC3A for WG211 | OEM Genuine Part

Overview

The ZF 6073.023.312 TCU ERGOPOWER M EC3A is a critical electronic control unit specifically designed for the WG211 transmission series. This OEM genuine part governs shift timing, clutch modulation, and diagnostic communication within the ERGOPOWER M system. Positioned as the brain of the transmission, it processes sensor inputs to ensure smooth gear transitions under heavy-duty loads. The SKU 6073.023.312 is factory-calibrated for direct plug-and-play replacement, eliminating the need for aftermarket programming. When paired with a robust TRANSMISSION HOUSING, this TCU maintains hydraulic pressure integrity across all operating temperatures.

Symptoms of Failure

• Erratic gear hunting at highway speeds — The TCU fails to lock torque converter clutch, causing RPM fluctuations and reduced fuel economy.
• Delayed engagement from Neutral to Drive — A worn EC3A board may not signal solenoids quickly, resulting in a 2-3 second lag before forward motion.
• Intermittent “Transmission Overheat” warnings — Faulty temperature sensing within the TCU triggers false alarms, even when fluid levels are correct.
• Complete loss of reverse gear — Internal relay failure on the 6073.023.312 unit prevents reverse solenoid activation, leaving the vehicle stuck in forward gears only.

Technical Specifications

Compatibility

This TCU is engineered for the ZF WG211 series, but it also cross-fits select WG180 and WG200 models produced after 2010. The 6073.023.312 unit is not compatible with WG120 or older mechanical-shift transmissions. For proper installation, ensure the HOUS.FRONT SECT and HOUSING REAR PART are free of corrosion, as the TCU mounts directly between these castings. Use a CYLINDRICAL PIN to align the control unit during reassembly, preventing connector damage.

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