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OEM Mercedes · BMW · Audi
🟩 2000–2003 Mercedes-Benz W163 ML-Class & W210 E-Class TCU Transmission Module — OEM
Part Number: A 022 545 18 32 (0225451832)
Common Name: EGS / Transmission Control Unit (TCU)
Transmission Type: 5-Speed Automatic (722.6)
Vehicle Removed From: 2000 Mercedes-Benz E320 Sedan (W210)
VIN: WDBJF65J4YB124116
Condition: Tested • 30 Day Warranty • Free Returns
🔧 Item Description
Genuine Mercedes-Benz OEM Transmission Control Module.
While originally designated for the W163 ML-Class (ML430/ML55 AMG), this unit was removed from a functional W210 E320, confirming cross-platform compatibility for select 722.6 5-speed transmissions.
This module serves as the primary controller for gear synchronization, shift pressure, and torque converter lock-up.
✅ Functionality & Testing
✔️ Shift Performance: Tested in a live donor vehicle; verified smooth upshifts and downshifts with no "clunking" or gear hunting.
✔️ CAN-Bus Connectivity: Scanned with professional diagnostic tools; verified 100% communication with the Engine Control Module (ECM) and Shifter Assembly.
✔️ Error-Free: Verified zero stored "Limp Mode" codes or permanent solenoid circuit faults.
✔️ Electrical Integrity: Connector pins are straight, clean, and free of thermal damage.
🧼 Condition & Inspection
⚠️ Wick/Oil Intrusion Check: Rigorously inspected for the common 722.6 "oil wicking" issue. The internal circuit board is clean and dry, with no transmission fluid found inside the connector or housing.
Casing: The metal protective housing is solid and free of corrosion.
🚗 Vehicle Compatibility Mercedes-Benz ML-Class (W163)
1999–2001 ML430
2000–2003 ML55 AMG
2000–2002 E320 (As confirmed by donor vehicle)
⚠️ Fitment Note: Mercedes-Benz frequently updated TCU part numbers and software versions. Because this part was functioning perfectly in a W210 despite the ML-class designation, it is a versatile replacement for 722.6 systems using part number 022 545 18 32. Please verify your original module matches this number before purchasing.
⚙️ Features & Benefits
OEM Reliability: Restores factory shift logic and timing to your 5-speed automatic gearbox.
Fixes Common Faults: Resolves issues such as the vehicle being stuck in "Limp Home Mode" (2nd gear only) or communication errors between the transmission and the rest of the car.
Direct Swap: Plug-and-play installation for matching part numbers.
🛡️ Warranty & Returns
✔️ 30 Day Warranty — Guaranteed electronic and signal functionality.
✔️ Free Returns — Shop with total confidence.
✔️ Professionally Tested