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Item Type: Engine Computer Board
Material: Aluminum alloy + ABS
OEM: A2721539791
Condition: Non part
Fitment: Replacement for Benz X204 GLK350 2010 to 2012 (programming is required for installation)
Installation Considerations:
1. It is recommended to find a professional auto mechanic to install, programming is required before installation
2. 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, 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 board
Troubleshooting Solution:
1. The fault light indicates that there is a problem with the sensor.
2. Repeatedly burn the computer board ECU or can't afford to refuel, please check whether the generator voltage is normal.
3. If there is a lack of cylinder, check whether the spark plug, ignition line, fuel injection nozzle, etc. are normal.
4. If there is idle instability, please check whether the idle motor and throttle valve body are normal and have foreign objects.
5. If there is difficulty in starting, please check whether the pressure sensor and water temperature sensor are normal.
6. If it cannot be started, please check whether the crankshaft position sensor Speed Sensor is normal.
