Why does the BMW 6 Series headlight sometimes work and sometimes not?
1 Answers
BMW 6 Series headlight sometimes working and sometimes not is caused by poor contact, or it could be a switch failure or a signal input issue between the switch and the module, or even an output problem from the module. Reasons for the engine fault light to illuminate: Most car owners have probably experienced this: shortly after refueling, the engine fault light on the dashboard comes on. This is usually because low-quality gasoline was added at an unregulated gas station, causing incomplete combustion of the air-fuel mixture during engine operation, which triggers the engine fault light. This does not affect driving safety but may harm the engine to some extent. Reasons for the oxygen sensor fault light to illuminate: Modern cars are equipped with two oxygen sensors, one before and one after the three-way catalytic converter. The front oxygen sensor detects the air-fuel ratio under different engine conditions, and the ECU adjusts the fuel injection amount and calculates the ignition timing based on this signal. The rear sensor mainly monitors the performance of the three-way catalytic converter. Therefore, if the oxygen sensor is damaged or the sensor connector is damaged or loose, it can cause the mixture to be too lean or too rich, leading to the fault light illuminating.
