Applicable to Engine Computer Control Module Replacement

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Engine Computer Control Module ECU A2731535079 Replacement for Mercedes-Benz W221 S550 CL550 M273

Characteristics

: Fitment: replacement for Mercedes-Benz CL550; spare part for Mercedes-Benz S550; Replacement for Mercedes-Benz W221 M273.Part Number: Reference OEM number is A2731535079, 2731535079. Please check the part number of the item before ordering. Direct Fit: Engine Computer Control Module (not a remanufactured part) is designed and manufactured to original specifications and meets OEM standards. Sturdy structure: The computer board is made of durable aluminum alloy shell and precisely welded internal circuit board to effectively prevent vibration, wear and ensure its long service life.

Perfect replacement: The engine control module is an ideal replacement part, which can be used to replace and renew the burned out computer control unit of the original car

Specification:

Condition: not remanufactured

Item Type: ECU

Engine control module material: aluminum alloy + ABS

OEM: A2731535079, 2731535079 Assembly 79

:

replacement for Mercedes -Benz W221 S550 CL550 M273 Replacement for Mercedes-Benz CL5504matic 2-Door Coupe 4.7 L 4663 CC 285Cu. In

2011 Mercedes-Benz S5504MATIC 4-door, 5.5L, 5461 CC, 333Cu sedan with turbocharged V8 GAS engine was released in 2011. In 2011, the V8 GAS DOHC

naturally aspirated replaced the Mercedes-Benz S550Base Sedan 4-Door, 5.5L, 5461 CC 333Cu. In 2011, the V8 GAS DOHC was replaced by

naturally aspirated for the Mercedes-Benz CL5504 Matic Coupe 2-door, 5.5 L, 5461 CC 333Cu. In 2010, the V8 GAS DOHC was replaced by

Naturally Aspirated for Mercedes-Benz S5504MATIC 4-Door 5.5L 5461CC 333Cu Sedan.

Naturally aspirated V8 GAS DOHC replacement released in 2010 for the Mercedes-Benz S550Base Sedan 4-Door, 5.5L, 5461 CC 333Cu.

Naturally Aspirated V8 GAS DOHC Replacement for the 2010 Mercedes-Benz CL5504 Matic Coupe 2-Door, 5.5L, 5461 CC 333Cu. In 2009, the V8 GAS DOHC, with

naturally aspirated, replaced the Mercedes-Benz S5504MATIC 4-door, 5.5L, 5461 CC, 333Cu sedan.

Naturally aspirated DOHC GAS V8 replacement launched in 2009 for the Mercedes-Benz S550Base Sedan 4-Door, 5.5L, 5461 CC 333Cu. In 2009, the V8 GAS DOHC

naturally aspirated replaced the Mercedes-Benz CL550base Coupe 2-Door, 5.5L, 5461 CC 333Cu. In 2008, the V8 GAS DOHC, with

naturally aspirated, replaced the Mercedes-Benz S5504MATIC 4-door, 5.5L, 5461 CC, 333Cu sedan.

Naturally aspirated V8 GAS DOHC replacement released in 2008 for the Mercedes-Benz S550Base Sedan 4-Door, 5.5L, 5461 CC 333Cu.

Naturally Aspirated V8 GAS DOHC Replacement for 2008 Mercedes-Benz CL550base Coupe 2-Door, 5.5L, 5461 CC 333Cu. In 2007, the V8 GAS DOHC, with

naturally aspirated, replaced the Mercedes-Benz S5504MATIC 4-door, 5.5L, 5461 CC, 333Cu sedan.

Naturally Aspirated V8 GAS DOHC Replacement Released in 2007 for the Mercedes-Benz S550Base Sedan 4-Door, 5.5L, 5461 CC 333Cu.

In 2007, V8 GAS DOHC naturally aspirated.

Installation Precautions: 1. It is recommended to go to a professional mechanic for installation

. 2.

When installing the product, pay attention to first find out the reason why the computer board broke, to avoid being burned again by the same failure. 3. Before installing the computer board, check whether the voltage is normal (about 12V). It is recommended not to install the computer board above 15V. Please check whether the circuit is normal and the grounding is good; Otherwise, the computer board may burn.

4.

After installing the computer board (insert the plug for testing), turn the key to NO and move it back and forth three or four times before booting. 5.

If the car has anti-theft, you need to decode (compare) it first, which depends on your car and is not on the computer board

Correct computer board installation method: 1. First remove a current wire from the battery cable, then install the computer board (circuit board), and then connect the wire,

2. After that, turn the car key to NO position and do not start the car. Wait 1 to 2 minutes before turning it on,

3. If the power on failed last time, please repeat the above step and try again, or check whether there is dust on the computer board and the socket of the computer board, if there is, please clean them with a clean brush or check whether the sockets are clean, so that the computer board can be installed correctly.

Common Problem Solving:

1 If the fault lamp is on, it indicates that there is a problem with the sensor.

2 The computer board ECU has been repeatedly burned or oil cannot be added. Check whether the generator voltage is normal.

3 In case of cylinder shortage, check whether the spark plug, ignition wire and fuel injection nozzle are normal.

4 If the idle speed is unstable, check whether the idle motor and throttle valve body are normal and have foreign matter.

5 If it is difficult to start, check whether the pressure sensor and water temperature sensor are normal.

6 If it does not start, check whether the pressure sensor and water temperature sensor are normal. crankshaft sensor position The speed sensor is normal.

Basic knowledge of circuit board:

1.

Product installation: Confirm that the product model and specifications are normal, install and repair the new circuit board, connect the wiring harness connector, and turn on the power switch 3 to 5 times 2. Inspection and evaluation after assembly: If the idle speed is normal: hot engine 800 to 950 rpm, cold engine 1000 to 1300 rpm; if the electronic fan is normal: 85. With 90

°C off; if the air conditioning is in normal condition: open the idle speed to 1100-1300 rpm; if hot engine exhaust gases are normal: check the pressure sensor if abnormal; If there is idle speed, adjust the ignition angle accordingly if there is not enough refueling.

Package list:

1 x ECU Engine Control Module Notice: 1. Please check the part number of your item; The corresponding information is for reference only.

2.

It is highly recommended to seek professional engineers for installation and programming. 3. If you are not sure about the item, please contact us before purchasing to avoid unnecessary returns, thank you!