06-10 C350 CLK350 ECU ECM PCM ENGINE COMPUTER A 272 153 05 92 0261209402 TESTED

Part Number Please match the following 0 261 209 402. We recommend matching the following but believe your MB shop can update this: A 272 153 05 92 Fitment/Interchange You must match your part number exactly as seen above. If any numbers are off compared to your original it will not work properly. Ecu will require programming or coding to your vehicle or vehicle's security system and is not plug and play. You will need to take this to your local BMW/Mercedes/VW "IMPORT SHOP" for programming. Your dealer will more than likely refuse to perform the programming or say it can't be done.  Ecu will fit 2006-2010 C350 CLK350 W211 models with an exact part number match. Programming is a must. Tech Notes ECU has been tested with our state of the art vehicle simulator which tests over 25 circuits of the ECU! Some of those are listed below: Reference Voltage Good! ECU powered up and has communication! ECU fuel pump/main relay test good! The problem areas on the PCB that cause a n