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🟩 2003–2005 Mercedes-Benz W203 C230 Transmission Control Module (TCU) — OEM
Part #: 0325451232 (A 032 545 12 32)
Vehicle Removed From: 2003 Mercedes-Benz C230 Kompressor (W203)
VIN: WDBRN40J43A534902
Condition: Tested • Cleaned & Sanitized • 30 Day Warranty • Free Returns
🔧 Item Description
Genuine Mercedes-Benz OEM EGS Transmission Control Module (TCU/TCM).
Specifically calibrated for the 722.6 5-Speed Automatic Transmission paired with the M271 1.8L engine.
This unit manages shift points, torque converter lock-up, and hydraulic pressure based on engine load and driver input.
A necessary replacement for units suffering from "limp-home" mode or internal hardware faults.
✅ Functionality & Testing
✔️ Communication: Verified stable CAN-bus link; no "No Communication" or "Internal Memory Error" faults.
✔️ Diagnostic Sweep: Passed all self-test protocols; unit reports gear position and solenoid status accurately.
✔️ Oil Intrusion Check: In many W203s, transmission fluid "wicks" through the harness into the TCU. This unit has been thoroughly inspected—the circuit board and pins are 100% dry and free of oil.
✔️ Electrical: All pins are straight and clean for a perfect connection.
🧼 Condition & Inspection
Professionally cleaned and sanitized.
Internal: Casing opened and board inspected for any signs of heat damage or fluid contamination.
Connectors: Plug ports are clear of debris and ready for installation.
🚗 Vehicle Compatibility Mercedes-Benz C-Class (W203)
2003–2005 C230 Kompressor (1.8L Supercharged I4)
Transmission: 722.6 5-Speed Automatic
Note: This part number A 032 545 12 32 is specific to this drivetrain. Please verify your original unit matches this number to ensure the shift logic is correct for your vehicle.
⚙️ Features & Benefits
Genuine Mercedes Part: Maintains the smooth, factory-correct shift quality and timing.
Reliability: Pre-screened for oil damage—the #1 cause of failure for these modules.
🔩 Installation & Programming Notes
Location: Found in the passenger-side footwell, behind the metal kick-plate.
Pro Tip: Before installing, inspect your harness connector. If there is oil in your original harness, clean it with electronic contact cleaner and replace the 13-pin transmission plug adapter on the gearbox to prevent oil from ruining this replacement unit.
Programming: Typically plug-and-play for the same model/engine, though clearing stored adaptation codes with a scanner is recommended for optimal shift feel.
🛡️ Warranty & Returns
✔️ 30 Day Warranty — Guaranteed electronic functionality.
✔️ Free Returns — Shop with total confidence.
✔️ Tested & Cleaned