What is the reason for the failure light of BMW 5 Series engine?

The reasons are as follows: First, the vehicle engine is faulty, especially the spark plug/ignition coil. Second, the vehicle fuel is faulty, and the owner needs to fill the fuel with the specified label. Thirdly, the ECU of the vehicle is out of order, which leads to false alarm. The engine of a vehicle will inevitably pollute a lot of engine oil if it works in an oily environment for a long time. If there is corresponding oil pollution, then the vehicle is likely to have various faults. In particular, the carbon deposit attached to the spark plug is likely to cause the vehicle engine to fail to ignite. The owner can replace the spark plug. Secondly, it is ECU failure. After the general vehicle passes through the stagnant water area, the ECU water will fail. Therefore, car owners need to pay special attention. Finally, the fuel failure of the vehicle. Generally speaking, each fuel has its own explosion-proof standard. Therefore, the owner needs to fill the vehicle with fuel that meets the standard.

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