What happened to the warning light of the new energy vehicle system?

If there is a fault light alarm on the instrument, it is necessary to determine what the fault light alarm is. Secondly, after the alarm, check whether the system function is normal. If the vehicle shows signs that affect the safe use of the vehicle, such as glossy alarm, brake system failure and tire pressure light alarm, it is recommended to stop and check in time.

1, power system fault This kind of fault light is the most reported by electric vehicles. Some electric vehicles with LCD screens will display: "Please check the power supply system!" . When the power system is reported to be faulty, the cars can move in most cases, and a few cars can't move because they can't engage in D gear or D gear. Power system fault lights are naturally caused by the power system, such as battery failure, motor controller failure, motor failure and so on. To further determine the fault point, it is necessary to use the diagnostic instrument matched with the electric vehicle to diagnose, find the module that reported the fault, read the data stream and determine the cause of the fault.

2. The fault light with insufficient battery is actually a warning light, which is used as a warning light of the fuel vehicle to remind the driver that it is time to charge. Some electric cars with LCD screens will display: "Please charge in time!" . The old driver once met a car owner who just bought an electric car. When he saw that the instrument reported the fault light, he ran to the maintenance station in great anxiety. As a result, there was no electricity, and he made a joke.

3. High-voltage disconnection fault When this fault light appears, the car can no longer be high-voltage, and the car can't move. The cause of the fault is that the contactor in the battery pack or the contactor in the distribution box has been automatically disconnected, and the high-voltage system has seriously failed. For example, if the battery pack collides, the fuse in the battery pack is blown, and the motor controller has a serious fault, this fault light will light up. Tongchuang Xinyang solemnly reminds: non-professionals should never repair without authorization, just call the maintenance station for rescue.

4. Internal fault of the power battery This fault light shows that the fault point is the battery pack. When this fault light is on, in most cases, the whole vehicle is disconnected from the high voltage and the vehicle cannot run. In a few cases, the vehicle can drive slowly, but it can't accelerate. Generally, the reasons for this kind of failure are the single failure in the battery pack, battery pack collision and poor wiring contact in the battery pack. Similarly, non-professionals can call the maintenance station for rescue.

5. Battery leakage There is a lightning symbol in the middle of the fault light, indicating that there is leakage in the high-voltage part of the battery. Generally, there will be no text prompts on the instrument of electric vehicles. The old driver analyzed that the manufacturer did this on purpose, for fear of scaring the driver. Some brands of electric vehicles will display a fault code on the instrument screen. When this fault light is on, the car can't move any more, and the high voltage of the whole car is cut off. As usual, non-professionals call the maintenance station for rescue.