The ECU and the sensor must be protected from moisture. Do not allow the computer or sensor sealing device damage, but YH FEM key programmer. The ECU must be protected from severe vibration.
When Yanhua BMW FEM key programmer the arc welding on the body, you should first disconnect the ECU power supply. In the vicinity of the ECU or sensor where the body repair work, should pay special attention.
Electronic fuel YH BMW FEM programmer injection system of electric fuel pump work, in addition to the ignition switch control, but also by the air flow sensor or ECU control. After the ignition switch is turned on, YH OBD Pro only the engine is in normal working or starting state, and the air flow sensor detects the air flow signal or ECU detects the speed and ignition signal when the fuel pump circuit can be connected, maintenance should pay attention to the above characteristics.
Some 2017 Latest Yanhua BMW FEM OBD Auto Key Programmer lights power can not be arbitrarily changed, otherwise there will be abnormal circumstances.
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With the airbag system of the car, the airbag for maintenance, if improper operation will make the airbag accidentally open, it must be strictly in accordance with the operating procedures.
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