03-05 Mercedes W203 C230 ECU Engine Control Module Unit 2711534879 OEM TESTED

🟩 2003–2005 Mercedes-Benz W203 C230 Engine Control Module (ECU/ECM) — OEM

Part #: 2711534879 (A 271 153 48 79)

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 Engine Control Unit (ECU).

• Specific to the M271 1.8L Supercharged (Kompressor) engine.

• This is the primary engine management computer responsible for fuel injection, ignition timing, and emissions control.

• A reliable replacement for units suffering from internal board failure or common oil-in-harness damage.

✅ Functionality & Testing

• ✔️ Communication: Verified stable CAN-bus connectivity; no "No Communication" or "Internal Processor Error" codes.

• ✔️ Circuit Integrity: Inspected for "Oil Wicking" (a common W203 issue where oil travels into the ECU pins); this unit is clean and dry.

• ✔️ Diagnostic Sweep: Passed all self-test protocols under simulated operating temperatures.

• ✔️ Electrical: All pins are straight, firm, and free of oxidation or heat-related discoloration.

🧼 Condition & Inspection

• Professionally cleaned and sanitized.

• Housing: Aluminum casing is in excellent condition; no heavy oxidation or physical damage.

• Connectors: Socket ports are clear of debris and ready for a secure harness seat.

🚗 Vehicle Compatibility Mercedes-Benz C-Class (W203)

• 2003–2005 Mercedes-Benz C230 Kompressor (Sedan & Coupe)

• Engine: 1.8L I4 Supercharged (M271)

• Note: This part number 271 153 48 79 must match your original unit precisely or be a confirmed supercession for your VIN.

⚙️ Features & Benefits

• Genuine Mercedes Part: Ensures factory-correct engine mapping and fuel efficiency.

• Safety: Restores consistent engine performance and prevents stalling or limp-mode issues caused by a failing computer.

🔩 Important Installation & Programming Notes

This module is a Theft Relevant Part (TRP). It is electronically "married" to the VIN, Ignition Switch (EIS), and Key of the donor vehicle.

To function in your vehicle, you must either:

1. Clone the data (EEPROM/Flash) from your original ECU onto this unit.

2. Renew (Virginize) this unit using a professional tool (like VVDI MB or Autel) and سپس perform a "Personalization" and "Activation" with Xentry/DAS.

It is NOT a simple "plug-and-play" replacement without specialized programming.

🛡️ Warranty & Returns

• ✔️ 30 Day Warranty — Guaranteed electronic functionality.

• ✔️ Free Returns — Shop with total confidence.

• ✔️ Tested & Cleaned