Feature:1. Applicable Model: Engine control module is replacement for BENZ E550 S550 CL550 CLS550 2007 to 2011, please confirm whether your model is applicable before buying.2. OE Number: The part numbers of engine computer board for reference are 2731536591, A2731536591, please confirm whether it is consistent with the OE you need.3. Function: The engine control module regulates the various parts of the vehicle engine by receiving input from sensors and additional modules and referencing this information back to other sensors, modules, and other areas of the vehicle. Restart your engine in a short time.4. Durable: The new computer board is made of durable aluminum alloy shell and precisie soldered internal circuit board, which effectively prevents vibration wear and ensures its long service life.5. Direct Replacement and Require Programming: The engine computer board control module, designed and manufactured to original specifications and meets OEM standards, ensures form and function match the original equipment. It is not PLUG and PLAY unit. Reprogramming is required.Specification:Item Type: Engine Control ModuleOE: 273153659, A2731536591Material: Aluminum alloy, ABSFitment:.Replacement for BENZ E550 S550 CL550 CLS550 2007-20112011Replacement for BenzS5504Matic Sedan 4-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2011Replacement for BenzS550Base Sedan 4-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2010Replacement for BenzCL5504Matic Coupe 2-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2010Replacement for BenzS5504Matic Sedan 4-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2010Replacement for BenzS550Base Sedan 4-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2009Replacement for BenzCL5504Matic Coupe 2-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2009Replacement for BenzS5504Matic Sedan 4-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2009Replacement for BenzS550Base Sedan 4-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2008Replacement for BenzCL550Base Coupe 2-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2008Replacement for BenzS5504Matic Sedan 4-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2008Replacement for BenzS550Base Sedan 4-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2007Replacement for BenzCL550Base Coupe 2-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2007Replacement for BenzS5504Matic Sedan 4-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally Aspirated2007Replacement for BenzS550Base Sedan 4-Door5.5L 5461CC 333Cu. In. V8 GAS DOHC Naturally AspiratedFunctions and Applications of Engine Panel ECUs1. Control the Working State of the Engine: The engine computer board is the core equipment of engine control, which analyzes and controls the engine by receiving sensor signals to achieve better fuel economy, reduce emissions and protect the engine.2. Fault Selfdiagnosis: The engine computer board has the function of fault self diagnosis, which can determine the specific location and type of engine fault by reading the fault code.3. Adaptive Control: The engine computer board has adaptive control function, which can automatically adjust the working state of the engine according to different driving conditions and environments to ensure the best performance of the engine.4. Programmability: The engine computer board has programmability, and the working state of the customized engine can be modified through the program.5. Strong Protection and Antiinterference Ability: The engine computer board adopts sophisticated hardware components and efficient software algorithms, which has strong anti interference ability and high reliability, and can work normally in harsh working environments.6. Complete Functions and Strong Scalability: The engine computer board has rich functions and interfaces, which can communicate and integrate with other vehicle systems (such as transmission, ABS, on board entertainment system, etc.) to realize intelligent control of the vehicle.Installation Considerations:1. It is recommended to find a professional auto mechanic to install, programming is required before installation2. When installing the product, pay attention to check the reason for the previous computer board to avoid burning the computer board again with the same fault.3. Check whether the voltage is normal (voltage about 12V) before installing the computer board, it is recommended not to install it above 15V, check whether the line is normal and whether the iron is good, otherwise there is a possibility of burning the computer board.4. After installing the computer board (insert the plug for test operation), turn the key to the NO position, switch back and forth three or four times, and then start.5. If the car has anti-theft, you need to decode (match) first, this depends on your car and not the computer boardCorrect Installation Method of Computer Board:1. First remove a