There can be a variety of reasons for the failure of the onboard charger display. It may be that the charger itself has a fault, such as a short circuit, power supply problems, etc. In addition, it is also possible that there is a problem with the battery or charging system of the vehicle, resulting in the charger not working properly.
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In addition, there may be connection problems between the charger and the vehicle, such as poor contact, line damage, etc. It is recommended that you check the charger and the relevant parts of the vehicle, if necessary, contact BYD after-sales service center in time for repair or replacement.